Hi,
i have a problem with my ocfs2 cluster filesystem. I have 3 nodes, running with CentOS 7.
The cluster runs since 1 year without problems. Last week, one colleague deletes about 100.000 files on the Filesystem with "rm *" in some folders.
Since that, the kworker io is about -50-80% usage (iotop), also iostat have the same value.
If i list all "fs_locks", i get about 190.000 entries:
echo "fs_locks" | debugfs.ocfs2 -n /dev/sdb | grep "Lockres" | wc -l
That are too many locks?
As example, i get the following output:
Lockres: M00000000000000062e723300000000 Mode: Exclusive
Flags: Initialized Attached
RO Holders: 0 EX Holders: 0
Pending Action: None Pending Unlock Action: None
Requested Mode: Exclusive Blocking Mode: Invalid
PR > Gets: 16 Fails: 0 Waits Total: 657us Max: 654us Avg: 41072ns
EX > Gets: 2 Fails: 0 Waits Total: 322us Max: 322us Avg: 161398ns
Disk Refreshes: 0
Flags: Initialized Attached
RO Holders: 0 EX Holders: 0
Pending Action: None Pending Unlock Action: None
Requested Mode: Exclusive Blocking Mode: Invalid
PR > Gets: 16 Fails: 0 Waits Total: 657us Max: 654us Avg: 41072ns
EX > Gets: 2 Fails: 0 Waits Total: 322us Max: 322us Avg: 161398ns
Disk Refreshes: 0
If i try to get the filename, the command hangs and i never get some output:
echo "locate <M00000000000000062e723300000000>" | debugfs.ocfs2 -n /dev/sdb
How can i solve this problem?
Best regards,
Thomas Manninger
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