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ocfs2: add uuid to ocfs2 thread name for problem analysis

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A node can mount multiple ocfs2 volumes.  And if thread names are same for
each volume/domain, it will bring inconvenience when analyzing problems
because we have to identify which volume/domain the messages belong to.

Since thread name will be printed to messages, so add volume uuid or dlm
name to thread name can benefit problem analysis.

Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Gang He <ghe@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joseph Qi 2015-11-05 18:44:13 -08:00 • committed by Linus Torvalds
parent b1529a41f7
commit 5afc44e2e9
5 changed files with 10 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

4
fs/ocfs2/dlm/dlmdomain.c
View file

@ -1866,6 +1866,7 @@ static int dlm_join_domain(struct dlm_ctxt *dlm)
int status; int status;
unsigned int backoff; unsigned int backoff;
unsigned int total_backoff = 0; unsigned int total_backoff = 0;
char wq_name[O2NM_MAX_NAME_LEN];
BUG_ON(!dlm); BUG_ON(!dlm);
@ -1895,7 +1896,8 @@ static int dlm_join_domain(struct dlm_ctxt *dlm)
goto bail; goto bail;
} }
dlm->dlm_worker = create_singlethread_workqueue("dlm_wq"); snprintf(wq_name, O2NM_MAX_NAME_LEN, "dlm_wq-%s", dlm->name);
dlm->dlm_worker = create_singlethread_workqueue(wq_name);
if (!dlm->dlm_worker) { if (!dlm->dlm_worker) {
status = -ENOMEM; status = -ENOMEM;
mlog_errno(status); mlog_errno(status);

2
fs/ocfs2/dlm/dlmrecovery.c
View file

@ -205,7 +205,7 @@ int dlm_launch_recovery_thread(struct dlm_ctxt *dlm)
mlog(0, "starting dlm recovery thread...\n"); mlog(0, "starting dlm recovery thread...\n");
dlm->dlm_reco_thread_task = kthread_run(dlm_recovery_thread, dlm, dlm->dlm_reco_thread_task = kthread_run(dlm_recovery_thread, dlm,
"dlm_reco_thread"); "dlm_reco-%s", dlm->name);
if (IS_ERR(dlm->dlm_reco_thread_task)) { if (IS_ERR(dlm->dlm_reco_thread_task)) {
mlog_errno(PTR_ERR(dlm->dlm_reco_thread_task)); mlog_errno(PTR_ERR(dlm->dlm_reco_thread_task));
dlm->dlm_reco_thread_task = NULL; dlm->dlm_reco_thread_task = NULL;

3
fs/ocfs2/dlm/dlmthread.c
View file

@ -493,7 +493,8 @@ int dlm_launch_thread(struct dlm_ctxt *dlm)
{ {
mlog(0, "Starting dlm_thread...\n"); mlog(0, "Starting dlm_thread...\n");
dlm->dlm_thread_task = kthread_run(dlm_thread, dlm, "dlm_thread"); dlm->dlm_thread_task = kthread_run(dlm_thread, dlm, "dlm-%s",
dlm->name);
if (IS_ERR(dlm->dlm_thread_task)) { if (IS_ERR(dlm->dlm_thread_task)) {
mlog_errno(PTR_ERR(dlm->dlm_thread_task)); mlog_errno(PTR_ERR(dlm->dlm_thread_task));
dlm->dlm_thread_task = NULL; dlm->dlm_thread_task = NULL;

3
fs/ocfs2/dlmglue.c
View file

@ -2998,7 +2998,8 @@ int ocfs2_dlm_init(struct ocfs2_super *osb)
} }
/* launch downconvert thread */ /* launch downconvert thread */
osb->dc_task = kthread_run(ocfs2_downconvert_thread, osb, "ocfs2dc"); osb->dc_task = kthread_run(ocfs2_downconvert_thread, osb, "ocfs2dc-%s",
osb->uuid_str);
if (IS_ERR(osb->dc_task)) { if (IS_ERR(osb->dc_task)) {
status = PTR_ERR(osb->dc_task); status = PTR_ERR(osb->dc_task);
osb->dc_task = NULL; osb->dc_task = NULL;

4
fs/ocfs2/journal.c
View file

@ -1090,7 +1090,7 @@ int ocfs2_journal_load(struct ocfs2_journal *journal, int local, int replayed)
/* Launch the commit thread */ /* Launch the commit thread */
if (!local) { if (!local) {
osb->commit_task = kthread_run(ocfs2_commit_thread, osb, osb->commit_task = kthread_run(ocfs2_commit_thread, osb,
"ocfs2cmt"); "ocfs2cmt-%s", osb->uuid_str);
if (IS_ERR(osb->commit_task)) { if (IS_ERR(osb->commit_task)) {
status = PTR_ERR(osb->commit_task); status = PTR_ERR(osb->commit_task);
osb->commit_task = NULL; osb->commit_task = NULL;
@ -1507,7 +1507,7 @@ void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num)
goto out; goto out;
osb->recovery_thread_task = kthread_run(__ocfs2_recovery_thread, osb, osb->recovery_thread_task = kthread_run(__ocfs2_recovery_thread, osb,
"ocfs2rec"); "ocfs2rec-%s", osb->uuid_str);
if (IS_ERR(osb->recovery_thread_task)) { if (IS_ERR(osb->recovery_thread_task)) {
mlog_errno((int)PTR_ERR(osb->recovery_thread_task)); mlog_errno((int)PTR_ERR(osb->recovery_thread_task));
osb->recovery_thread_task = NULL; osb->recovery_thread_task = NULL;