Hello Ulrich,
See my comments inline.
On 2021/10/8 16:38, Ulrich Windl wrote:
Hi!
I just noticed these two messages on two nodes of a 3-node cluster:
Oct 08 10:00:14 h18 kernel: dlm: 790F9C237C2A45758135FE4945B7A744:
send_repeat_remove dir 119 O000000000000000009d83500000000
Oct 08 10:00:14 h19 kernel: dlm: 790F9C237C2A45758135FE4945B7A744:
receive_remove from 118 not found O000000000000000009d83500000000
These two line messages were printed fs/dlm kernel module when it
handled dlm lock resource related things.
For "send_repeat_remove dir", it does not refer to ocfs2 directory, is
related to dlm implementation details.
So far, did you encounter any ocfs2 file system level problem? e.g. file
system hang, etc.
Thanks
Gang
Due to "genuine configuration"TM node id 118 corresponds to node h18, while 119
corresponds to (you guessed it!) node h19.
journalctl colors these messages in red, so I guess they are somewhat
unexpected.
My guess is that the messages are related to OCFS2 reflink snapshots that are
created every hour (and may take 15 Seconds).
The kernel is 5.3.18-24.83-default (SLES15 SP2) on all nodes, and we actually
had a lockup on OCFS2 snapshots with some older kernels.
So I wonder whether those messages may still be an indication of some problem.
My snapshots do not create any directories ("dir"), BTW. But the nodes
create/rename/remove different files in the same directory.
Actually I have snapshots with these date stamps:
Change: 2021-10-08 10:00:10.275375897 +0200
Change: 2021-10-08 10:00:15.371632277 +0200
Change: 2021-10-08 10:00:15.371632277 +0200
Change: 2021-10-08 10:00:15.371632277 +0200
Change: 2021-10-08 10:00:15.371632277 +0200
Change: 2021-10-08 10:00:15.371632277 +0200
Change: 2021-10-08 10:00:15.443455304 +0200
Change: 2021-10-08 10:00:15.938216584 +0200
Change: 2021-10-08 10:00:15.974216964 +0200
Change: 2021-10-08 10:00:16.183466675 +0200
Change: 2021-10-08 10:00:16.223467289 +0200
Change: 2021-10-08 10:00:16.251467719 +0200
Change: 2021-10-08 10:00:17.375484990 +0200
Change: 2021-10-08 10:00:18.187497465 +0200
Change: 2021-10-08 10:00:18.843647739 +0200
Regards,
Ulrich
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