2522fe45a186e (Thomas Gleixner 2019-05-28 09:57:20 -0700 1) // SPDX-License-Identifier: GPL-2.0-only
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 2) /******************************************************************************
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 3) *******************************************************************************
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 4) **
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 5) ** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 6) ** Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 7) **
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 8) **
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 9) *******************************************************************************
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 10) ******************************************************************************/
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 11)
7963b8a59845e (Paul Gortmaker 2016-09-19 16:44:50 -0400 12) #include <linux/module.h>
7963b8a59845e (Paul Gortmaker 2016-09-19 16:44:50 -0400 13)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 14) #include "dlm_internal.h"
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 15) #include "lockspace.h"
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 16) #include "member.h"
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 17) #include "recoverd.h"
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 18) #include "dir.h"
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 19) #include "lowcomms.h"
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 20) #include "config.h"
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 21) #include "memory.h"
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 22) #include "lock.h"
c56b39cd2c55d (David Teigland 2006-04-28 10:51:53 -0400 23) #include "recover.h"
2896ee37ccc1f (David Teigland 2006-11-27 11:31:22 -0600 24) #include "requestqueue.h"
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 25) #include "user.h"
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 26) #include "ast.h"
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 27)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 28) static int ls_count;
901359256b266 (David Teigland 2006-01-20 08:47:07 +0000 29) static struct mutex ls_lock;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 30) static struct list_head lslist;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 31) static spinlock_t lslist_lock;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 32) static struct task_struct * scand_task;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 33)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 34)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 35) static ssize_t dlm_control_store(struct dlm_ls *ls, const char *buf, size_t len)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 36) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 37) ssize_t ret = len;
6edb56871a524 (Fabian Frederick 2014-06-06 14:38:25 -0700 38) int n;
6edb56871a524 (Fabian Frederick 2014-06-06 14:38:25 -0700 39) int rc = kstrtoint(buf, 0, &n);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 40)
6edb56871a524 (Fabian Frederick 2014-06-06 14:38:25 -0700 41) if (rc)
6edb56871a524 (Fabian Frederick 2014-06-06 14:38:25 -0700 42) return rc;
e2de7f565521a (Patrick Caulfield 2006-11-06 08:53:28 +0000 43) ls = dlm_find_lockspace_local(ls->ls_local_handle);
e2de7f565521a (Patrick Caulfield 2006-11-06 08:53:28 +0000 44) if (!ls)
e2de7f565521a (Patrick Caulfield 2006-11-06 08:53:28 +0000 45) return -EINVAL;
e2de7f565521a (Patrick Caulfield 2006-11-06 08:53:28 +0000 46)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 47) switch (n) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 48) case 0:
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 49) dlm_ls_stop(ls);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 50) break;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 51) case 1:
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 52) dlm_ls_start(ls);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 53) break;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 54) default:
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 55) ret = -EINVAL;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 56) }
e2de7f565521a (Patrick Caulfield 2006-11-06 08:53:28 +0000 57) dlm_put_lockspace(ls);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 58) return ret;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 59) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 60)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 61) static ssize_t dlm_event_store(struct dlm_ls *ls, const char *buf, size_t len)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 62) {
6edb56871a524 (Fabian Frederick 2014-06-06 14:38:25 -0700 63) int rc = kstrtoint(buf, 0, &ls->ls_uevent_result);
6edb56871a524 (Fabian Frederick 2014-06-06 14:38:25 -0700 64)
6edb56871a524 (Fabian Frederick 2014-06-06 14:38:25 -0700 65) if (rc)
6edb56871a524 (Fabian Frederick 2014-06-06 14:38:25 -0700 66) return rc;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 67) set_bit(LSFL_UEVENT_WAIT, &ls->ls_flags);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 68) wake_up(&ls->ls_uevent_wait);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 69) return len;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 70) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 71)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 72) static ssize_t dlm_id_show(struct dlm_ls *ls, char *buf)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 73) {
a1d144c71ddc1 (David Teigland 2006-09-06 17:01:40 -0500 74) return snprintf(buf, PAGE_SIZE, "%u\n", ls->ls_global_id);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 75) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 76)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 77) static ssize_t dlm_id_store(struct dlm_ls *ls, const char *buf, size_t len)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 78) {
6edb56871a524 (Fabian Frederick 2014-06-06 14:38:25 -0700 79) int rc = kstrtouint(buf, 0, &ls->ls_global_id);
6edb56871a524 (Fabian Frederick 2014-06-06 14:38:25 -0700 80)
6edb56871a524 (Fabian Frederick 2014-06-06 14:38:25 -0700 81) if (rc)
6edb56871a524 (Fabian Frederick 2014-06-06 14:38:25 -0700 82) return rc;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 83) return len;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 84) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 85)
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 86) static ssize_t dlm_nodir_show(struct dlm_ls *ls, char *buf)
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 87) {
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 88) return snprintf(buf, PAGE_SIZE, "%u\n", dlm_no_directory(ls));
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 89) }
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 90)
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 91) static ssize_t dlm_nodir_store(struct dlm_ls *ls, const char *buf, size_t len)
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 92) {
6edb56871a524 (Fabian Frederick 2014-06-06 14:38:25 -0700 93) int val;
6edb56871a524 (Fabian Frederick 2014-06-06 14:38:25 -0700 94) int rc = kstrtoint(buf, 0, &val);
6edb56871a524 (Fabian Frederick 2014-06-06 14:38:25 -0700 95)
6edb56871a524 (Fabian Frederick 2014-06-06 14:38:25 -0700 96) if (rc)
6edb56871a524 (Fabian Frederick 2014-06-06 14:38:25 -0700 97) return rc;
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 98) if (val == 1)
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 99) set_bit(LSFL_NODIR, &ls->ls_flags);
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 100) return len;
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 101) }
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 102)
c56b39cd2c55d (David Teigland 2006-04-28 10:51:53 -0400 103) static ssize_t dlm_recover_status_show(struct dlm_ls *ls, char *buf)
c56b39cd2c55d (David Teigland 2006-04-28 10:51:53 -0400 104) {
c56b39cd2c55d (David Teigland 2006-04-28 10:51:53 -0400 105) uint32_t status = dlm_recover_status(ls);
a1d144c71ddc1 (David Teigland 2006-09-06 17:01:40 -0500 106) return snprintf(buf, PAGE_SIZE, "%x\n", status);
c56b39cd2c55d (David Teigland 2006-04-28 10:51:53 -0400 107) }
c56b39cd2c55d (David Teigland 2006-04-28 10:51:53 -0400 108)
faa0f2677287a (David Teigland 2006-08-08 17:08:42 -0500 109) static ssize_t dlm_recover_nodeid_show(struct dlm_ls *ls, char *buf)
faa0f2677287a (David Teigland 2006-08-08 17:08:42 -0500 110) {
a1d144c71ddc1 (David Teigland 2006-09-06 17:01:40 -0500 111) return snprintf(buf, PAGE_SIZE, "%d\n", ls->ls_recover_nodeid);
faa0f2677287a (David Teigland 2006-08-08 17:08:42 -0500 112) }
faa0f2677287a (David Teigland 2006-08-08 17:08:42 -0500 113)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 114) struct dlm_attr {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 115) struct attribute attr;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 116) ssize_t (*show)(struct dlm_ls *, char *);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 117) ssize_t (*store)(struct dlm_ls *, const char *, size_t);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 118) };
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 119)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 120) static struct dlm_attr dlm_attr_control = {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 121) .attr = {.name = "control", .mode = S_IWUSR},
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 122) .store = dlm_control_store
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 123) };
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 124)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 125) static struct dlm_attr dlm_attr_event = {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 126) .attr = {.name = "event_done", .mode = S_IWUSR},
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 127) .store = dlm_event_store
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 128) };
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 129)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 130) static struct dlm_attr dlm_attr_id = {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 131) .attr = {.name = "id", .mode = S_IRUGO | S_IWUSR},
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 132) .show = dlm_id_show,
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 133) .store = dlm_id_store
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 134) };
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 135)
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 136) static struct dlm_attr dlm_attr_nodir = {
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 137) .attr = {.name = "nodir", .mode = S_IRUGO | S_IWUSR},
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 138) .show = dlm_nodir_show,
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 139) .store = dlm_nodir_store
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 140) };
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 141)
c56b39cd2c55d (David Teigland 2006-04-28 10:51:53 -0400 142) static struct dlm_attr dlm_attr_recover_status = {
c56b39cd2c55d (David Teigland 2006-04-28 10:51:53 -0400 143) .attr = {.name = "recover_status", .mode = S_IRUGO},
c56b39cd2c55d (David Teigland 2006-04-28 10:51:53 -0400 144) .show = dlm_recover_status_show
c56b39cd2c55d (David Teigland 2006-04-28 10:51:53 -0400 145) };
c56b39cd2c55d (David Teigland 2006-04-28 10:51:53 -0400 146)
faa0f2677287a (David Teigland 2006-08-08 17:08:42 -0500 147) static struct dlm_attr dlm_attr_recover_nodeid = {
faa0f2677287a (David Teigland 2006-08-08 17:08:42 -0500 148) .attr = {.name = "recover_nodeid", .mode = S_IRUGO},
faa0f2677287a (David Teigland 2006-08-08 17:08:42 -0500 149) .show = dlm_recover_nodeid_show
faa0f2677287a (David Teigland 2006-08-08 17:08:42 -0500 150) };
faa0f2677287a (David Teigland 2006-08-08 17:08:42 -0500 151)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 152) static struct attribute *dlm_attrs[] = {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 153) &dlm_attr_control.attr,
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 154) &dlm_attr_event.attr,
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 155) &dlm_attr_id.attr,
4875647a08e35 (David Teigland 2012-04-26 15:54:29 -0500 156) &dlm_attr_nodir.attr,
c56b39cd2c55d (David Teigland 2006-04-28 10:51:53 -0400 157) &dlm_attr_recover_status.attr,
faa0f2677287a (David Teigland 2006-08-08 17:08:42 -0500 158) &dlm_attr_recover_nodeid.attr,
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 159) NULL,
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 160) };
c9c5b5e1565d6 (Kimberly Brown 2019-05-07 21:48:05 -0400 161) ATTRIBUTE_GROUPS(dlm);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 162)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 163) static ssize_t dlm_attr_show(struct kobject *kobj, struct attribute *attr,
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 164) char *buf)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 165) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 166) struct dlm_ls *ls = container_of(kobj, struct dlm_ls, ls_kobj);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 167) struct dlm_attr *a = container_of(attr, struct dlm_attr, attr);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 168) return a->show ? a->show(ls, buf) : 0;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 169) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 170)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 171) static ssize_t dlm_attr_store(struct kobject *kobj, struct attribute *attr,
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 172) const char *buf, size_t len)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 173) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 174) struct dlm_ls *ls = container_of(kobj, struct dlm_ls, ls_kobj);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 175) struct dlm_attr *a = container_of(attr, struct dlm_attr, attr);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 176) return a->store ? a->store(ls, buf, len) : len;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 177) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 178)
ba542e3b92f9e (Patrick Caulfield 2006-11-02 14:41:23 +0000 179) static void lockspace_kobj_release(struct kobject *k)
ba542e3b92f9e (Patrick Caulfield 2006-11-02 14:41:23 +0000 180) {
ba542e3b92f9e (Patrick Caulfield 2006-11-02 14:41:23 +0000 181) struct dlm_ls *ls = container_of(k, struct dlm_ls, ls_kobj);
ba542e3b92f9e (Patrick Caulfield 2006-11-02 14:41:23 +0000 182) kfree(ls);
ba542e3b92f9e (Patrick Caulfield 2006-11-02 14:41:23 +0000 183) }
ba542e3b92f9e (Patrick Caulfield 2006-11-02 14:41:23 +0000 184)
52cf25d0ab7f7 (Emese Revfy 2010-01-19 02:58:23 +0100 185) static const struct sysfs_ops dlm_attr_ops = {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 186) .show = dlm_attr_show,
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 187) .store = dlm_attr_store,
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 188) };
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 189)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 190) static struct kobj_type dlm_ktype = {
c9c5b5e1565d6 (Kimberly Brown 2019-05-07 21:48:05 -0400 191) .default_groups = dlm_groups,
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 192) .sysfs_ops = &dlm_attr_ops,
ba542e3b92f9e (Patrick Caulfield 2006-11-02 14:41:23 +0000 193) .release = lockspace_kobj_release,
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 194) };
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 195)
d405936b32222 (Greg Kroah-Hartman 2007-10-29 20:13:17 +0100 196) static struct kset *dlm_kset;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 197)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 198) static int do_uevent(struct dlm_ls *ls, int in)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 199) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 200) if (in)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 201) kobject_uevent(&ls->ls_kobj, KOBJ_ONLINE);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 202) else
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 203) kobject_uevent(&ls->ls_kobj, KOBJ_OFFLINE);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 204)
075f01775f536 (David Teigland 2014-02-14 11:54:44 -0600 205) log_rinfo(ls, "%s the lockspace group...", in ? "joining" : "leaving");
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 206)
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 207) /* dlm_controld will see the uevent, do the necessary group management
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 208) and then write to sysfs to wake us */
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 209)
f084a4f4a14b9 (Ross Lagerwall 2020-04-29 13:15:41 +0100 210) wait_event(ls->ls_uevent_wait,
f084a4f4a14b9 (Ross Lagerwall 2020-04-29 13:15:41 +0100 211) test_and_clear_bit(LSFL_UEVENT_WAIT, &ls->ls_flags));
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 212)
f084a4f4a14b9 (Ross Lagerwall 2020-04-29 13:15:41 +0100 213) log_rinfo(ls, "group event done %d", ls->ls_uevent_result);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 214)
f084a4f4a14b9 (Ross Lagerwall 2020-04-29 13:15:41 +0100 215) return ls->ls_uevent_result;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 216) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 217)
b4a5d4bc377e4 (Steven Whitehouse 2010-02-17 09:41:34 +0000 218) static int dlm_uevent(struct kset *kset, struct kobject *kobj,
b4a5d4bc377e4 (Steven Whitehouse 2010-02-17 09:41:34 +0000 219) struct kobj_uevent_env *env)
b4a5d4bc377e4 (Steven Whitehouse 2010-02-17 09:41:34 +0000 220) {
b4a5d4bc377e4 (Steven Whitehouse 2010-02-17 09:41:34 +0000 221) struct dlm_ls *ls = container_of(kobj, struct dlm_ls, ls_kobj);
b4a5d4bc377e4 (Steven Whitehouse 2010-02-17 09:41:34 +0000 222)
b4a5d4bc377e4 (Steven Whitehouse 2010-02-17 09:41:34 +0000 223) add_uevent_var(env, "LOCKSPACE=%s", ls->ls_name);
b4a5d4bc377e4 (Steven Whitehouse 2010-02-17 09:41:34 +0000 224) return 0;
b4a5d4bc377e4 (Steven Whitehouse 2010-02-17 09:41:34 +0000 225) }
b4a5d4bc377e4 (Steven Whitehouse 2010-02-17 09:41:34 +0000 226)
417f7c59ed75b (Bhumika Goyal 2017-07-28 18:49:17 +0530 227) static const struct kset_uevent_ops dlm_uevent_ops = {
b4a5d4bc377e4 (Steven Whitehouse 2010-02-17 09:41:34 +0000 228) .uevent = dlm_uevent,
b4a5d4bc377e4 (Steven Whitehouse 2010-02-17 09:41:34 +0000 229) };
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 230)
30727174b6273 (Denis Cheng 2008-02-02 01:53:46 +0800 231) int __init dlm_lockspace_init(void)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 232) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 233) ls_count = 0;
901359256b266 (David Teigland 2006-01-20 08:47:07 +0000 234) mutex_init(&ls_lock);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 235) INIT_LIST_HEAD(&lslist);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 236) spin_lock_init(&lslist_lock);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 237)
b4a5d4bc377e4 (Steven Whitehouse 2010-02-17 09:41:34 +0000 238) dlm_kset = kset_create_and_add("dlm", &dlm_uevent_ops, kernel_kobj);
d405936b32222 (Greg Kroah-Hartman 2007-10-29 20:13:17 +0100 239) if (!dlm_kset) {
8e24eea728068 (Harvey Harrison 2008-04-30 00:55:09 -0700 240) printk(KERN_WARNING "%s: can not create kset\n", __func__);
d405936b32222 (Greg Kroah-Hartman 2007-10-29 20:13:17 +0100 241) return -ENOMEM;
d405936b32222 (Greg Kroah-Hartman 2007-10-29 20:13:17 +0100 242) }
d405936b32222 (Greg Kroah-Hartman 2007-10-29 20:13:17 +0100 243) return 0;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 244) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 245)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 246) void dlm_lockspace_exit(void)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 247) {
d405936b32222 (Greg Kroah-Hartman 2007-10-29 20:13:17 +0100 248) kset_unregister(dlm_kset);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 249) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 250)
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 251) static struct dlm_ls *find_ls_to_scan(void)
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 252) {
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 253) struct dlm_ls *ls;
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 254)
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 255) spin_lock(&lslist_lock);
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 256) list_for_each_entry(ls, &lslist, ls_list) {
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 257) if (time_after_eq(jiffies, ls->ls_scan_time +
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 258) dlm_config.ci_scan_secs * HZ)) {
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 259) spin_unlock(&lslist_lock);
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 260) return ls;
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 261) }
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 262) }
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 263) spin_unlock(&lslist_lock);
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 264) return NULL;
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 265) }
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 266)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 267) static int dlm_scand(void *data)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 268) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 269) struct dlm_ls *ls;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 270)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 271) while (!kthread_should_stop()) {
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 272) ls = find_ls_to_scan();
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 273) if (ls) {
85e86edf951a8 (David Teigland 2007-05-18 08:58:15 -0500 274) if (dlm_lock_recovery_try(ls)) {
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 275) ls->ls_scan_time = jiffies;
85e86edf951a8 (David Teigland 2007-05-18 08:58:15 -0500 276) dlm_scan_rsbs(ls);
3ae1acf93a215 (David Teigland 2007-05-18 08:59:31 -0500 277) dlm_scan_timeout(ls);
c6ff669bac5c4 (David Teigland 2011-03-28 14:17:26 -0500 278) dlm_scan_waiters(ls);
85e86edf951a8 (David Teigland 2007-05-18 08:58:15 -0500 279) dlm_unlock_recovery(ls);
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 280) } else {
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 281) ls->ls_scan_time += HZ;
85e86edf951a8 (David Teigland 2007-05-18 08:58:15 -0500 282) }
c6ff669bac5c4 (David Teigland 2011-03-28 14:17:26 -0500 283) continue;
85e86edf951a8 (David Teigland 2007-05-18 08:58:15 -0500 284) }
c6ff669bac5c4 (David Teigland 2011-03-28 14:17:26 -0500 285) schedule_timeout_interruptible(dlm_config.ci_scan_secs * HZ);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 286) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 287) return 0;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 288) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 289)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 290) static int dlm_scand_start(void)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 291) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 292) struct task_struct *p;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 293) int error = 0;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 294)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 295) p = kthread_run(dlm_scand, NULL, "dlm_scand");
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 296) if (IS_ERR(p))
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 297) error = PTR_ERR(p);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 298) else
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 299) scand_task = p;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 300) return error;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 301) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 302)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 303) static void dlm_scand_stop(void)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 304) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 305) kthread_stop(scand_task);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 306) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 307)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 308) struct dlm_ls *dlm_find_lockspace_global(uint32_t id)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 309) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 310) struct dlm_ls *ls;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 311)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 312) spin_lock(&lslist_lock);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 313)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 314) list_for_each_entry(ls, &lslist, ls_list) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 315) if (ls->ls_global_id == id) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 316) ls->ls_count++;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 317) goto out;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 318) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 319) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 320) ls = NULL;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 321) out:
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 322) spin_unlock(&lslist_lock);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 323) return ls;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 324) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 325)
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 326) struct dlm_ls *dlm_find_lockspace_local(dlm_lockspace_t *lockspace)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 327) {
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 328) struct dlm_ls *ls;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 329)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 330) spin_lock(&lslist_lock);
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 331) list_for_each_entry(ls, &lslist, ls_list) {
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 332) if (ls->ls_local_handle == lockspace) {
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 333) ls->ls_count++;
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 334) goto out;
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 335) }
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 336) }
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 337) ls = NULL;
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 338) out:
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 339) spin_unlock(&lslist_lock);
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 340) return ls;
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 341) }
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 342)
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 343) struct dlm_ls *dlm_find_lockspace_device(int minor)
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 344) {
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 345) struct dlm_ls *ls;
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 346)
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 347) spin_lock(&lslist_lock);
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 348) list_for_each_entry(ls, &lslist, ls_list) {
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 349) if (ls->ls_device.minor == minor) {
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 350) ls->ls_count++;
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 351) goto out;
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 352) }
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 353) }
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 354) ls = NULL;
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 355) out:
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 356) spin_unlock(&lslist_lock);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 357) return ls;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 358) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 359)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 360) void dlm_put_lockspace(struct dlm_ls *ls)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 361) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 362) spin_lock(&lslist_lock);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 363) ls->ls_count--;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 364) spin_unlock(&lslist_lock);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 365) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 366)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 367) static void remove_lockspace(struct dlm_ls *ls)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 368) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 369) for (;;) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 370) spin_lock(&lslist_lock);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 371) if (ls->ls_count == 0) {
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 372) WARN_ON(ls->ls_create_count != 0);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 373) list_del(&ls->ls_list);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 374) spin_unlock(&lslist_lock);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 375) return;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 376) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 377) spin_unlock(&lslist_lock);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 378) ssleep(1);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 379) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 380) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 381)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 382) static int threads_start(void)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 383) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 384) int error;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 385)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 386) error = dlm_scand_start();
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 387) if (error) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 388) log_print("cannot start dlm_scand thread %d", error);
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 389) goto fail;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 390) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 391)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 392) /* Thread for sending/receiving messages for all lockspace's */
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 393) error = dlm_lowcomms_start();
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 394) if (error) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 395) log_print("cannot start dlm lowcomms %d", error);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 396) goto scand_fail;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 397) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 398)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 399) return 0;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 400)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 401) scand_fail:
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 402) dlm_scand_stop();
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 403) fail:
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 404) return error;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 405) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 406)
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 407) static int new_lockspace(const char *name, const char *cluster,
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 408) uint32_t flags, int lvblen,
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 409) const struct dlm_lockspace_ops *ops, void *ops_arg,
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 410) int *ops_result, dlm_lockspace_t **lockspace)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 411) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 412) struct dlm_ls *ls;
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 413) int i, size, error;
79d72b54483bf (David Teigland 2007-05-18 09:02:20 -0500 414) int do_unreg = 0;
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 415) int namelen = strlen(name);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 416)
3f0806d2596de (Tycho Andersen 2018-11-02 14:18:21 -0600 417) if (namelen > DLM_LOCKSPACE_LEN || namelen == 0)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 418) return -EINVAL;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 419)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 420) if (!lvblen || (lvblen % 8))
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 421) return -EINVAL;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 422)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 423) if (!try_module_get(THIS_MODULE))
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 424) return -EINVAL;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 425)
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 426) if (!dlm_user_daemon_available()) {
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 427) log_print("dlm user daemon not available");
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 428) error = -EUNATCH;
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 429) goto out;
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 430) }
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 431)
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 432) if (ops && ops_result) {
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 433) if (!dlm_config.ci_recover_callbacks)
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 434) *ops_result = -EOPNOTSUPP;
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 435) else
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 436) *ops_result = 0;
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 437) }
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 438)
3b0e761ba83cb (Zhu Lingshan 2017-07-11 09:26:55 -0500 439) if (!cluster)
3b0e761ba83cb (Zhu Lingshan 2017-07-11 09:26:55 -0500 440) log_print("dlm cluster name '%s' is being used without an application provided cluster name",
3b0e761ba83cb (Zhu Lingshan 2017-07-11 09:26:55 -0500 441) dlm_config.ci_cluster_name);
3b0e761ba83cb (Zhu Lingshan 2017-07-11 09:26:55 -0500 442)
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 443) if (dlm_config.ci_recover_callbacks && cluster &&
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 444) strncmp(cluster, dlm_config.ci_cluster_name, DLM_LOCKSPACE_LEN)) {
8e1743748b7e9 (Gang He 2017-05-18 10:42:12 +0800 445) log_print("dlm cluster name '%s' does not match "
8e1743748b7e9 (Gang He 2017-05-18 10:42:12 +0800 446) "the application cluster name '%s'",
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 447) dlm_config.ci_cluster_name, cluster);
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 448) error = -EBADR;
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 449) goto out;
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 450) }
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 451)
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 452) error = 0;
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 453)
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 454) spin_lock(&lslist_lock);
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 455) list_for_each_entry(ls, &lslist, ls_list) {
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 456) WARN_ON(ls->ls_create_count <= 0);
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 457) if (ls->ls_namelen != namelen)
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 458) continue;
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 459) if (memcmp(ls->ls_name, name, namelen))
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 460) continue;
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 461) if (flags & DLM_LSFL_NEWEXCL) {
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 462) error = -EEXIST;
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 463) break;
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 464) }
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 465) ls->ls_create_count++;
8511a2728ab82 (David Teigland 2009-04-08 15:38:43 -0500 466) *lockspace = ls;
8511a2728ab82 (David Teigland 2009-04-08 15:38:43 -0500 467) error = 1;
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 468) break;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 469) }
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 470) spin_unlock(&lslist_lock);
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 471)
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 472) if (error)
8511a2728ab82 (David Teigland 2009-04-08 15:38:43 -0500 473) goto out;
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 474)
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 475) error = -ENOMEM;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 476)
573c24c4af666 (David Teigland 2009-11-30 16:34:43 -0600 477) ls = kzalloc(sizeof(struct dlm_ls) + namelen, GFP_NOFS);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 478) if (!ls)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 479) goto out;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 480) memcpy(ls->ls_name, name, namelen);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 481) ls->ls_namelen = namelen;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 482) ls->ls_lvblen = lvblen;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 483) ls->ls_count = 0;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 484) ls->ls_flags = 0;
c1dcf65ffc579 (David Teigland 2008-08-18 14:03:25 -0500 485) ls->ls_scan_time = jiffies;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 486)
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 487) if (ops && dlm_config.ci_recover_callbacks) {
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 488) ls->ls_ops = ops;
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 489) ls->ls_ops_arg = ops_arg;
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 490) }
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 491)
3ae1acf93a215 (David Teigland 2007-05-18 08:59:31 -0500 492) if (flags & DLM_LSFL_TIMEWARN)
3ae1acf93a215 (David Teigland 2007-05-18 08:59:31 -0500 493) set_bit(LSFL_TIMEWARN, &ls->ls_flags);
3ae1acf93a215 (David Teigland 2007-05-18 08:59:31 -0500 494)
fad59c1390045 (David Teigland 2007-06-11 10:47:18 -0500 495) /* ls_exflags are forced to match among nodes, and we don't
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 496) need to require all nodes to have some flags set */
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 497) ls->ls_exflags = (flags & ~(DLM_LSFL_TIMEWARN | DLM_LSFL_FS |
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 498) DLM_LSFL_NEWEXCL));
fad59c1390045 (David Teigland 2007-06-11 10:47:18 -0500 499)
68c817a1c4e21 (David Teigland 2007-01-09 09:41:48 -0600 500) size = dlm_config.ci_rsbtbl_size;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 501) ls->ls_rsbtbl_size = size;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 502)
42bc47b35320e (Kees Cook 2018-06-12 14:27:11 -0700 503) ls->ls_rsbtbl = vmalloc(array_size(size, sizeof(struct dlm_rsbtable)));
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 504) if (!ls->ls_rsbtbl)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 505) goto out_lsfree;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 506) for (i = 0; i < size; i++) {
9beb3bf5a92bb (Bob Peterson 2011-10-26 15:24:55 -0500 507) ls->ls_rsbtbl[i].keep.rb_node = NULL;
9beb3bf5a92bb (Bob Peterson 2011-10-26 15:24:55 -0500 508) ls->ls_rsbtbl[i].toss.rb_node = NULL;
c7be761a8163d (David Teigland 2009-01-07 16:50:41 -0600 509) spin_lock_init(&ls->ls_rsbtbl[i].lock);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 510) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 511)
05c32f47bfae7 (David Teigland 2012-06-14 12:17:32 -0500 512) spin_lock_init(&ls->ls_remove_spin);
05c32f47bfae7 (David Teigland 2012-06-14 12:17:32 -0500 513)
05c32f47bfae7 (David Teigland 2012-06-14 12:17:32 -0500 514) for (i = 0; i < DLM_REMOVE_NAMES_MAX; i++) {
05c32f47bfae7 (David Teigland 2012-06-14 12:17:32 -0500 515) ls->ls_remove_names[i] = kzalloc(DLM_RESNAME_MAXLEN+1,
05c32f47bfae7 (David Teigland 2012-06-14 12:17:32 -0500 516) GFP_KERNEL);
05c32f47bfae7 (David Teigland 2012-06-14 12:17:32 -0500 517) if (!ls->ls_remove_names[i])
05c32f47bfae7 (David Teigland 2012-06-14 12:17:32 -0500 518) goto out_rsbtbl;
05c32f47bfae7 (David Teigland 2012-06-14 12:17:32 -0500 519) }
05c32f47bfae7 (David Teigland 2012-06-14 12:17:32 -0500 520)
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 521) idr_init(&ls->ls_lkbidr);
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 522) spin_lock_init(&ls->ls_lkbidr_spin);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 523)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 524) INIT_LIST_HEAD(&ls->ls_waiters);
901359256b266 (David Teigland 2006-01-20 08:47:07 +0000 525) mutex_init(&ls->ls_waiters_mutex);
ef0c2bb05f40f (David Teigland 2007-03-28 09:56:46 -0500 526) INIT_LIST_HEAD(&ls->ls_orphans);
ef0c2bb05f40f (David Teigland 2007-03-28 09:56:46 -0500 527) mutex_init(&ls->ls_orphans_mutex);
3ae1acf93a215 (David Teigland 2007-05-18 08:59:31 -0500 528) INIT_LIST_HEAD(&ls->ls_timeout);
3ae1acf93a215 (David Teigland 2007-05-18 08:59:31 -0500 529) mutex_init(&ls->ls_timeout_mutex);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 530)
3881ac04ebf94 (David Teigland 2011-07-07 14:05:03 -0500 531) INIT_LIST_HEAD(&ls->ls_new_rsb);
3881ac04ebf94 (David Teigland 2011-07-07 14:05:03 -0500 532) spin_lock_init(&ls->ls_new_rsb_spin);
3881ac04ebf94 (David Teigland 2011-07-07 14:05:03 -0500 533)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 534) INIT_LIST_HEAD(&ls->ls_nodes);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 535) INIT_LIST_HEAD(&ls->ls_nodes_gone);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 536) ls->ls_num_nodes = 0;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 537) ls->ls_low_nodeid = 0;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 538) ls->ls_total_weight = 0;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 539) ls->ls_node_array = NULL;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 540)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 541) memset(&ls->ls_stub_rsb, 0, sizeof(struct dlm_rsb));
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 542) ls->ls_stub_rsb.res_ls = ls;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 543)
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 544) ls->ls_debug_rsb_dentry = NULL;
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 545) ls->ls_debug_waiters_dentry = NULL;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 546)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 547) init_waitqueue_head(&ls->ls_uevent_wait);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 548) ls->ls_uevent_result = 0;
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 549) init_completion(&ls->ls_members_done);
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 550) ls->ls_members_result = -1;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 551)
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 552) mutex_init(&ls->ls_cb_mutex);
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 553) INIT_LIST_HEAD(&ls->ls_cb_delay);
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 554)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 555) ls->ls_recoverd_task = NULL;
901359256b266 (David Teigland 2006-01-20 08:47:07 +0000 556) mutex_init(&ls->ls_recoverd_active);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 557) spin_lock_init(&ls->ls_recover_lock);
98f176fb32f33 (David Teigland 2006-11-27 13:19:28 -0600 558) spin_lock_init(&ls->ls_rcom_spin);
98f176fb32f33 (David Teigland 2006-11-27 13:19:28 -0600 559) get_random_bytes(&ls->ls_rcom_seq, sizeof(uint64_t));
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 560) ls->ls_recover_status = 0;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 561) ls->ls_recover_seq = 0;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 562) ls->ls_recover_args = NULL;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 563) init_rwsem(&ls->ls_in_recovery);
c36258b5925e6 (David Teigland 2007-09-27 15:53:38 -0500 564) init_rwsem(&ls->ls_recv_active);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 565) INIT_LIST_HEAD(&ls->ls_requestqueue);
901359256b266 (David Teigland 2006-01-20 08:47:07 +0000 566) mutex_init(&ls->ls_requestqueue_mutex);
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 567) mutex_init(&ls->ls_clear_proc_locks);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 568)
9f8f9c774ad10 (Alexander Aring 2020-11-02 20:04:17 -0500 569) ls->ls_recover_buf = kmalloc(LOWCOMMS_MAX_TX_BUFFER_LEN, GFP_NOFS);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 570) if (!ls->ls_recover_buf)
05c32f47bfae7 (David Teigland 2012-06-14 12:17:32 -0500 571) goto out_lkbidr;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 572)
757a427196354 (David Teigland 2011-10-20 13:26:28 -0500 573) ls->ls_slot = 0;
757a427196354 (David Teigland 2011-10-20 13:26:28 -0500 574) ls->ls_num_slots = 0;
757a427196354 (David Teigland 2011-10-20 13:26:28 -0500 575) ls->ls_slots_size = 0;
757a427196354 (David Teigland 2011-10-20 13:26:28 -0500 576) ls->ls_slots = NULL;
757a427196354 (David Teigland 2011-10-20 13:26:28 -0500 577)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 578) INIT_LIST_HEAD(&ls->ls_recover_list);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 579) spin_lock_init(&ls->ls_recover_list_lock);
1d7c484eeb167 (David Teigland 2012-05-15 16:07:49 -0500 580) idr_init(&ls->ls_recover_idr);
1d7c484eeb167 (David Teigland 2012-05-15 16:07:49 -0500 581) spin_lock_init(&ls->ls_recover_idr_lock);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 582) ls->ls_recover_list_count = 0;
597d0cae0f99f (David Teigland 2006-07-12 16:44:04 -0500 583) ls->ls_local_handle = ls;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 584) init_waitqueue_head(&ls->ls_wait_general);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 585) INIT_LIST_HEAD(&ls->ls_root_list);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 586) init_rwsem(&ls->ls_root_sem);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 587)
5f88f1ea16a2f (David Teigland 2006-08-24 14:47:20 -0500 588) spin_lock(&lslist_lock);
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 589) ls->ls_create_count = 1;
5f88f1ea16a2f (David Teigland 2006-08-24 14:47:20 -0500 590) list_add(&ls->ls_list, &lslist);
5f88f1ea16a2f (David Teigland 2006-08-24 14:47:20 -0500 591) spin_unlock(&lslist_lock);
5f88f1ea16a2f (David Teigland 2006-08-24 14:47:20 -0500 592)
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 593) if (flags & DLM_LSFL_FS) {
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 594) error = dlm_callback_start(ls);
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 595) if (error) {
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 596) log_error(ls, "can't start dlm_callback %d", error);
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 597) goto out_delist;
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 598) }
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 599) }
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 600)
475f230c6072f (David Teigland 2012-08-02 11:08:21 -0500 601) init_waitqueue_head(&ls->ls_recover_lock_wait);
475f230c6072f (David Teigland 2012-08-02 11:08:21 -0500 602)
475f230c6072f (David Teigland 2012-08-02 11:08:21 -0500 603) /*
475f230c6072f (David Teigland 2012-08-02 11:08:21 -0500 604) * Once started, dlm_recoverd first looks for ls in lslist, then
475f230c6072f (David Teigland 2012-08-02 11:08:21 -0500 605) * initializes ls_in_recovery as locked in "down" mode. We need
475f230c6072f (David Teigland 2012-08-02 11:08:21 -0500 606) * to wait for the wakeup from dlm_recoverd because in_recovery
475f230c6072f (David Teigland 2012-08-02 11:08:21 -0500 607) * has to start out in down mode.
475f230c6072f (David Teigland 2012-08-02 11:08:21 -0500 608) */
475f230c6072f (David Teigland 2012-08-02 11:08:21 -0500 609)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 610) error = dlm_recoverd_start(ls);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 611) if (error) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 612) log_error(ls, "can't start dlm_recoverd %d", error);
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 613) goto out_callback;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 614) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 615)
475f230c6072f (David Teigland 2012-08-02 11:08:21 -0500 616) wait_event(ls->ls_recover_lock_wait,
475f230c6072f (David Teigland 2012-08-02 11:08:21 -0500 617) test_bit(LSFL_RECOVER_LOCK, &ls->ls_flags));
475f230c6072f (David Teigland 2012-08-02 11:08:21 -0500 618)
0ffddafc3a397 (Wang Hai 2020-06-15 11:25:33 +0800 619) /* let kobject handle freeing of ls if there's an error */
0ffddafc3a397 (Wang Hai 2020-06-15 11:25:33 +0800 620) do_unreg = 1;
0ffddafc3a397 (Wang Hai 2020-06-15 11:25:33 +0800 621)
901195ed7f4b2 (Greg Kroah-Hartman 2007-12-17 15:54:39 -0400 622) ls->ls_kobj.kset = dlm_kset;
901195ed7f4b2 (Greg Kroah-Hartman 2007-12-17 15:54:39 -0400 623) error = kobject_init_and_add(&ls->ls_kobj, &dlm_ktype, NULL,
901195ed7f4b2 (Greg Kroah-Hartman 2007-12-17 15:54:39 -0400 624) "%s", ls->ls_name);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 625) if (error)
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 626) goto out_recoverd;
901195ed7f4b2 (Greg Kroah-Hartman 2007-12-17 15:54:39 -0400 627) kobject_uevent(&ls->ls_kobj, KOBJ_ADD);
79d72b54483bf (David Teigland 2007-05-18 09:02:20 -0500 628)
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 629) /* This uevent triggers dlm_controld in userspace to add us to the
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 630) group of nodes that are members of this lockspace (managed by the
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 631) cluster infrastructure.) Once it's done that, it tells us who the
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 632) current lockspace members are (via configfs) and then tells the
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 633) lockspace to start running (via sysfs) in dlm_ls_start(). */
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 634)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 635) error = do_uevent(ls, 1);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 636) if (error)
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 637) goto out_recoverd;
79d72b54483bf (David Teigland 2007-05-18 09:02:20 -0500 638)
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 639) wait_for_completion(&ls->ls_members_done);
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 640) error = ls->ls_members_result;
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 641) if (error)
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 642) goto out_members;
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 643)
79d72b54483bf (David Teigland 2007-05-18 09:02:20 -0500 644) dlm_create_debug_file(ls);
79d72b54483bf (David Teigland 2007-05-18 09:02:20 -0500 645)
075f01775f536 (David Teigland 2014-02-14 11:54:44 -0600 646) log_rinfo(ls, "join complete");
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 647) *lockspace = ls;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 648) return 0;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 649)
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 650) out_members:
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 651) do_uevent(ls, 0);
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 652) dlm_clear_members(ls);
8b0e7b2cf35aa (David Teigland 2007-05-18 09:03:35 -0500 653) kfree(ls->ls_node_array);
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 654) out_recoverd:
5f88f1ea16a2f (David Teigland 2006-08-24 14:47:20 -0500 655) dlm_recoverd_stop(ls);
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 656) out_callback:
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 657) dlm_callback_stop(ls);
79d72b54483bf (David Teigland 2007-05-18 09:02:20 -0500 658) out_delist:
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 659) spin_lock(&lslist_lock);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 660) list_del(&ls->ls_list);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 661) spin_unlock(&lslist_lock);
1d7c484eeb167 (David Teigland 2012-05-15 16:07:49 -0500 662) idr_destroy(&ls->ls_recover_idr);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 663) kfree(ls->ls_recover_buf);
05c32f47bfae7 (David Teigland 2012-06-14 12:17:32 -0500 664) out_lkbidr:
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 665) idr_destroy(&ls->ls_lkbidr);
b982896cdb6e6 (Vasily Averin 2018-11-15 13:15:05 +0300 666) out_rsbtbl:
3456880ff39f7 (Thomas Meyer 2018-12-03 10:02:01 -0600 667) for (i = 0; i < DLM_REMOVE_NAMES_MAX; i++)
3456880ff39f7 (Thomas Meyer 2018-12-03 10:02:01 -0600 668) kfree(ls->ls_remove_names[i]);
c282af4990167 (Bryn M. Reeves 2011-07-01 15:49:23 -0500 669) vfree(ls->ls_rsbtbl);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 670) out_lsfree:
79d72b54483bf (David Teigland 2007-05-18 09:02:20 -0500 671) if (do_unreg)
197b12d6796a3 (Greg Kroah-Hartman 2007-12-20 08:13:05 -0800 672) kobject_put(&ls->ls_kobj);
79d72b54483bf (David Teigland 2007-05-18 09:02:20 -0500 673) else
79d72b54483bf (David Teigland 2007-05-18 09:02:20 -0500 674) kfree(ls);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 675) out:
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 676) module_put(THIS_MODULE);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 677) return error;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 678) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 679)
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 680) int dlm_new_lockspace(const char *name, const char *cluster,
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 681) uint32_t flags, int lvblen,
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 682) const struct dlm_lockspace_ops *ops, void *ops_arg,
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 683) int *ops_result, dlm_lockspace_t **lockspace)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 684) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 685) int error = 0;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 686)
901359256b266 (David Teigland 2006-01-20 08:47:07 +0000 687) mutex_lock(&ls_lock);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 688) if (!ls_count)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 689) error = threads_start();
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 690) if (error)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 691) goto out;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 692)
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 693) error = new_lockspace(name, cluster, flags, lvblen, ops, ops_arg,
60f98d1839376 (David Teigland 2011-11-02 14:30:58 -0500 694) ops_result, lockspace);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 695) if (!error)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 696) ls_count++;
8511a2728ab82 (David Teigland 2009-04-08 15:38:43 -0500 697) if (error > 0)
8511a2728ab82 (David Teigland 2009-04-08 15:38:43 -0500 698) error = 0;
9d232469bcd77 (Alexander Aring 2021-03-01 17:05:20 -0500 699) if (!ls_count) {
9d232469bcd77 (Alexander Aring 2021-03-01 17:05:20 -0500 700) dlm_scand_stop();
9d232469bcd77 (Alexander Aring 2021-03-01 17:05:20 -0500 701) dlm_lowcomms_shutdown();
9d232469bcd77 (Alexander Aring 2021-03-01 17:05:20 -0500 702) dlm_lowcomms_stop();
9d232469bcd77 (Alexander Aring 2021-03-01 17:05:20 -0500 703) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 704) out:
901359256b266 (David Teigland 2006-01-20 08:47:07 +0000 705) mutex_unlock(&ls_lock);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 706) return error;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 707) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 708)
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 709) static int lkb_idr_is_local(int id, void *p, void *data)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 710) {
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 711) struct dlm_lkb *lkb = p;
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 712)
a97f4a66d8ee4 (Bart Van Assche 2013-10-16 14:20:25 +0200 713) return lkb->lkb_nodeid == 0 && lkb->lkb_grmode != DLM_LOCK_IV;
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 714) }
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 715)
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 716) static int lkb_idr_is_any(int id, void *p, void *data)
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 717) {
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 718) return 1;
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 719) }
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 720)
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 721) static int lkb_idr_free(int id, void *p, void *data)
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 722) {
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 723) struct dlm_lkb *lkb = p;
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 724)
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 725) if (lkb->lkb_lvbptr && lkb->lkb_flags & DLM_IFL_MSTCPY)
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 726) dlm_free_lvb(lkb->lkb_lvbptr);
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 727)
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 728) dlm_free_lkb(lkb);
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 729) return 0;
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 730) }
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 731)
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 732) /* NOTE: We check the lkbidr here rather than the resource table.
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 733) This is because there may be LKBs queued as ASTs that have been unlinked
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 734) from their RSBs and are pending deletion once the AST has been delivered */
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 735)
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 736) static int lockspace_busy(struct dlm_ls *ls, int force)
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 737) {
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 738) int rv;
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 739)
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 740) spin_lock(&ls->ls_lkbidr_spin);
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 741) if (force == 0) {
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 742) rv = idr_for_each(&ls->ls_lkbidr, lkb_idr_is_any, ls);
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 743) } else if (force == 1) {
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 744) rv = idr_for_each(&ls->ls_lkbidr, lkb_idr_is_local, ls);
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 745) } else {
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 746) rv = 0;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 747) }
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 748) spin_unlock(&ls->ls_lkbidr_spin);
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 749) return rv;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 750) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 751)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 752) static int release_lockspace(struct dlm_ls *ls, int force)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 753) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 754) struct dlm_rsb *rsb;
9beb3bf5a92bb (Bob Peterson 2011-10-26 15:24:55 -0500 755) struct rb_node *n;
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 756) int i, busy, rv;
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 757)
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 758) busy = lockspace_busy(ls, force);
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 759)
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 760) spin_lock(&lslist_lock);
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 761) if (ls->ls_create_count == 1) {
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 762) if (busy) {
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 763) rv = -EBUSY;
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 764) } else {
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 765) /* remove_lockspace takes ls off lslist */
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 766) ls->ls_create_count = 0;
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 767) rv = 0;
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 768) }
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 769) } else if (ls->ls_create_count > 1) {
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 770) rv = --ls->ls_create_count;
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 771) } else {
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 772) rv = -EINVAL;
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 773) }
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 774) spin_unlock(&lslist_lock);
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 775)
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 776) if (rv) {
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 777) log_debug(ls, "release_lockspace no remove %d", rv);
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 778) return rv;
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 779) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 780)
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 781) dlm_device_deregister(ls);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 782)
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 783) if (force < 3 && dlm_user_daemon_available())
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 784) do_uevent(ls, 0);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 785)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 786) dlm_recoverd_stop(ls);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 787)
9d232469bcd77 (Alexander Aring 2021-03-01 17:05:20 -0500 788) if (ls_count == 1) {
9d232469bcd77 (Alexander Aring 2021-03-01 17:05:20 -0500 789) dlm_scand_stop();
9d232469bcd77 (Alexander Aring 2021-03-01 17:05:20 -0500 790) dlm_lowcomms_shutdown();
9d232469bcd77 (Alexander Aring 2021-03-01 17:05:20 -0500 791) }
9d232469bcd77 (Alexander Aring 2021-03-01 17:05:20 -0500 792)
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 793) dlm_callback_stop(ls);
23e8e1aaacb10 (David Teigland 2011-04-05 13:16:24 -0500 794)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 795) remove_lockspace(ls);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 796)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 797) dlm_delete_debug_file(ls);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 798)
8fc6ed9a3508a (David Teigland 2018-11-15 11:17:40 -0600 799) idr_destroy(&ls->ls_recover_idr);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 800) kfree(ls->ls_recover_buf);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 801)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 802) /*
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 803) * Free all lkb's in idr
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 804) */
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 805)
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 806) idr_for_each(&ls->ls_lkbidr, lkb_idr_free, ls);
3d6aa675fff9e (David Teigland 2011-07-06 17:00:54 -0500 807) idr_destroy(&ls->ls_lkbidr);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 808)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 809) /*
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 810) * Free all rsb's on rsbtbl[] lists
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 811) */
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 812)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 813) for (i = 0; i < ls->ls_rsbtbl_size; i++) {
9beb3bf5a92bb (Bob Peterson 2011-10-26 15:24:55 -0500 814) while ((n = rb_first(&ls->ls_rsbtbl[i].keep))) {
9beb3bf5a92bb (Bob Peterson 2011-10-26 15:24:55 -0500 815) rsb = rb_entry(n, struct dlm_rsb, res_hashnode);
9beb3bf5a92bb (Bob Peterson 2011-10-26 15:24:55 -0500 816) rb_erase(n, &ls->ls_rsbtbl[i].keep);
52bda2b5bab87 (David Teigland 2007-11-07 09:06:49 -0600 817) dlm_free_rsb(rsb);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 818) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 819)
9beb3bf5a92bb (Bob Peterson 2011-10-26 15:24:55 -0500 820) while ((n = rb_first(&ls->ls_rsbtbl[i].toss))) {
9beb3bf5a92bb (Bob Peterson 2011-10-26 15:24:55 -0500 821) rsb = rb_entry(n, struct dlm_rsb, res_hashnode);
9beb3bf5a92bb (Bob Peterson 2011-10-26 15:24:55 -0500 822) rb_erase(n, &ls->ls_rsbtbl[i].toss);
52bda2b5bab87 (David Teigland 2007-11-07 09:06:49 -0600 823) dlm_free_rsb(rsb);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 824) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 825) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 826)
c282af4990167 (Bryn M. Reeves 2011-07-01 15:49:23 -0500 827) vfree(ls->ls_rsbtbl);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 828)
05c32f47bfae7 (David Teigland 2012-06-14 12:17:32 -0500 829) for (i = 0; i < DLM_REMOVE_NAMES_MAX; i++)
05c32f47bfae7 (David Teigland 2012-06-14 12:17:32 -0500 830) kfree(ls->ls_remove_names[i]);
05c32f47bfae7 (David Teigland 2012-06-14 12:17:32 -0500 831)
3881ac04ebf94 (David Teigland 2011-07-07 14:05:03 -0500 832) while (!list_empty(&ls->ls_new_rsb)) {
3881ac04ebf94 (David Teigland 2011-07-07 14:05:03 -0500 833) rsb = list_first_entry(&ls->ls_new_rsb, struct dlm_rsb,
3881ac04ebf94 (David Teigland 2011-07-07 14:05:03 -0500 834) res_hashchain);
3881ac04ebf94 (David Teigland 2011-07-07 14:05:03 -0500 835) list_del(&rsb->res_hashchain);
3881ac04ebf94 (David Teigland 2011-07-07 14:05:03 -0500 836) dlm_free_rsb(rsb);
3881ac04ebf94 (David Teigland 2011-07-07 14:05:03 -0500 837) }
3881ac04ebf94 (David Teigland 2011-07-07 14:05:03 -0500 838)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 839) /*
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 840) * Free structures on any other lists
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 841) */
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 842)
2896ee37ccc1f (David Teigland 2006-11-27 11:31:22 -0600 843) dlm_purge_requestqueue(ls);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 844) kfree(ls->ls_recover_args);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 845) dlm_clear_members(ls);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 846) dlm_clear_members_gone(ls);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 847) kfree(ls->ls_node_array);
075f01775f536 (David Teigland 2014-02-14 11:54:44 -0600 848) log_rinfo(ls, "release_lockspace final free");
197b12d6796a3 (Greg Kroah-Hartman 2007-12-20 08:13:05 -0800 849) kobject_put(&ls->ls_kobj);
79d72b54483bf (David Teigland 2007-05-18 09:02:20 -0500 850) /* The ls structure will be freed when the kobject is done with */
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 851)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 852) module_put(THIS_MODULE);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 853) return 0;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 854) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 855)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 856) /*
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 857) * Called when a system has released all its locks and is not going to use the
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 858) * lockspace any longer. We free everything we're managing for this lockspace.
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 859) * Remaining nodes will go through the recovery process as if we'd died. The
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 860) * lockspace must continue to function as usual, participating in recoveries,
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 861) * until this returns.
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 862) *
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 863) * Force has 4 possible values:
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 864) * 0 - don't destroy locksapce if it has any LKBs
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 865) * 1 - destroy lockspace if it has remote LKBs but not if it has local LKBs
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 866) * 2 - destroy lockspace regardless of LKBs
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 867) * 3 - destroy lockspace as part of a forced shutdown
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 868) */
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 869)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 870) int dlm_release_lockspace(void *lockspace, int force)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 871) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 872) struct dlm_ls *ls;
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 873) int error;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 874)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 875) ls = dlm_find_lockspace_local(lockspace);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 876) if (!ls)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 877) return -EINVAL;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 878) dlm_put_lockspace(ls);
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 879)
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 880) mutex_lock(&ls_lock);
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 881) error = release_lockspace(ls, force);
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 882) if (!error)
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 883) ls_count--;
278afcbf4fe96 (David Teigland 2008-11-13 13:22:34 -0600 884) if (!ls_count)
9d232469bcd77 (Alexander Aring 2021-03-01 17:05:20 -0500 885) dlm_lowcomms_stop();
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 886) mutex_unlock(&ls_lock);
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 887)
0f8e0d9a31740 (David Teigland 2008-08-06 13:30:24 -0500 888) return error;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 889) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 890)
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 891) void dlm_stop_lockspaces(void)
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 892) {
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 893) struct dlm_ls *ls;
696b3d84605e5 (David Teigland 2013-06-25 12:48:01 -0500 894) int count;
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 895)
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 896) restart:
696b3d84605e5 (David Teigland 2013-06-25 12:48:01 -0500 897) count = 0;
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 898) spin_lock(&lslist_lock);
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 899) list_for_each_entry(ls, &lslist, ls_list) {
696b3d84605e5 (David Teigland 2013-06-25 12:48:01 -0500 900) if (!test_bit(LSFL_RUNNING, &ls->ls_flags)) {
696b3d84605e5 (David Teigland 2013-06-25 12:48:01 -0500 901) count++;
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 902) continue;
696b3d84605e5 (David Teigland 2013-06-25 12:48:01 -0500 903) }
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 904) spin_unlock(&lslist_lock);
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 905) log_error(ls, "no userland control daemon, stopping lockspace");
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 906) dlm_ls_stop(ls);
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 907) goto restart;
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 908) }
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 909) spin_unlock(&lslist_lock);
696b3d84605e5 (David Teigland 2013-06-25 12:48:01 -0500 910)
696b3d84605e5 (David Teigland 2013-06-25 12:48:01 -0500 911) if (count)
696b3d84605e5 (David Teigland 2013-06-25 12:48:01 -0500 912) log_print("dlm user daemon left %d lockspaces", count);
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 913) }
dc68c7ed362a0 (David Teigland 2008-08-18 11:43:30 -0500 914)
VisionFive2 Linux kernel
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