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ocfs2 patch to track delayed orphan scan timer statistics

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Patch to track delayed orphan scan timer statistics.

Modifies ocfs2_osb_dump to print the following:
  Orphan Scan=> Local: 10  Global: 21  Last Scan: 67 seconds ago

Signed-off-by: Srinivas Eeda <srinivas.eeda@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
This commit is contained in:
Srinivas Eeda 2009-06-03 17:02:56 -07:00 committed by Joel Becker
parent 83273932fb
commit 15633a220f
3 changed files with 15 additions and 1 deletions
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4
fs/ocfs2/journal.c
View File

@ -1900,6 +1900,8 @@ void ocfs2_queue_orphan_scan(struct ocfs2_super *osb)
* number and update LVB so other node will skip the scan for a while
*/
seqno++;
os->os_count++;
os->os_scantime = CURRENT_TIME;
unlock:
ocfs2_orphan_scan_unlock(osb, seqno, DLM_LOCK_EX);
out:
@ -1939,6 +1941,8 @@ int ocfs2_orphan_scan_init(struct ocfs2_super *osb)
os = &osb->osb_orphan_scan;
os->os_osb = osb;
os->os_count = 0;
os->os_scantime = CURRENT_TIME;
mutex_init(&os->os_lock);
INIT_DELAYED_WORK(&os->os_orphan_scan_work,

4
fs/ocfs2/ocfs2.h
View File

@ -156,7 +156,9 @@ struct ocfs2_orphan_scan {
struct ocfs2_super *os_osb;
struct ocfs2_lock_res os_lockres; /* lock to synchronize scans */
struct delayed_work os_orphan_scan_work;
u32 os_seqno; /* incremented on every scan */
struct timespec os_scantime; /* time this node ran the scan */
u32 os_count; /* tracks node specific scans */
u32 os_seqno; /* tracks cluster wide scans */
};
struct ocfs2_dlm_debug {

8
fs/ocfs2/super.c
View File

@ -208,6 +208,7 @@ static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
int i;
struct ocfs2_cluster_connection *cconn = osb->cconn;
struct ocfs2_recovery_map *rm = osb->recovery_map;
struct ocfs2_orphan_scan *os;
out += snprintf(buf + out, len - out,
"%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
@ -309,6 +310,13 @@ static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
i, osb->slot_recovery_generations[i]);
}
os = &osb->osb_orphan_scan;
out += snprintf(buf + out, len - out, "Orphan Scan=> ");
out += snprintf(buf + out, len - out, "Local: %u Global: %u ",
os->os_count, os->os_seqno);
out += snprintf(buf + out, len - out, " Last Scan: %lu seconds ago\n",
(get_seconds() - os->os_scantime.tv_sec));
return out;
}