[Ocfs2-users] OCFS2 crash

[Sunil Mushran]

Looks to be running out of lowmem.

# date
# cat /proc/meminfo
# cat /proc/slabinfo

Run a script that dumps the above every 1 to 5 mins. That should
help explain the cause.

Brian Sieler wrote:
> Using 2-node clustered file system on DELL/EMC SAN/RHEL
> 2.6.9-34.0.2.ELsmp x86_64.
>
> Config:
>
> O2CB_HEARTBEAT_THRESHOLD=30
>
> Kernel param: elavator=deadline (per FAQ)
>
> These log items appear and the server crashes. Has happened twice now
> at three week intervals, each time during a heavy IO operation:
>
> Jan 15 16:08:29 db100 kernel: (3898,6):o2hb_setup_one_bio:371 ERROR:
> Could not alloc slots BIO!
> Jan 15 16:08:29 db100 kernel: (3898,6):o2hb_read_slots:507 ERROR: 
> status = -12
> Jan 15 16:08:29 db100 kernel: (3898,6):o2hb_do_disk_heartbeat:973
> ERROR: status = -12
> Jan 15 16:08:29 db100 kernel: (3898,6):o2hb_setup_one_bio:371 ERROR:
> Could not alloc slots BIO!
> Jan 15 16:08:29 db100 kernel: (3898,6):o2hb_read_slots:507 ERROR: 
> status = -12
> Jan 15 16:08:29 db100 kernel: (3898,6):o2hb_do_disk_heartbeat:973 
> ERROR: status
>
> Can't find much on any of these errors…what is 507 ERROR status = -12?
>
> Any help appreciated
>