[dm-devel] Re: Temporarily squelching multipathd errors
Christophe Varoqui
christophe.varoqui at free.fr
Sat Jul 19 08:27:50 UTC 2008
> Greetings,
>
> I perform SAN-based snapshots on OCFS2 and ext3 filesystems under
> dm-multipath. Before I snapshot the filesystem, I unmount and delete
> the previous night's snapshot LUNs. Doing so causes (correctly)
> multipathd to output the following errors:
>
> <snip>
> ...
> Jul 14 03:16:02 ausracdbd01 multipathd: mpath19: remaining active paths:
> 7
> Jul 14 03:16:02 ausracdbd01 multipathd: sdci: tur checker reports path
> is down
> Jul 14 03:16:02 ausracdbd01 kernel: device-mapper: multipath: Failing
> path 69:80.
> Jul 14 03:16:02 ausracdbd01 multipathd: sdco: tur checker reports path
> is down
> ....
> </snip>
>
> During this snapshot time, I would like to temporarily turn off the
> verbosity of multipathd. Is this possible? It's mostly an annoyance
> factor for me because our nightly centralized syslog scan picks up words
> like 'fail' and generates a report to the system administrators (which
> we then have to ignore for these messages).
>
Why not just remove the multipath from the multipathd topology before deleting the snapvol ?
multipathd -k"del map mpath19"
Regards,
cvaroqui
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