[linux-lvm] Re: error creating snapshots
Stuart D. Gathman
stuart at bmsi.com
Tue Nov 3 14:50:25 UTC 2009
On Tue, 3 Nov 2009, Mike Snitzer wrote:
> Stuart D. Gathman <stuart at bmsi.com> wrote:
>
> > Is this a harmless error having to do with some misreported option to
> > notify a user process when the snapshot is almost full? Or should I switch
> > backups over
> This is harmless but it does mean that dmeventd-based snapshot
> usage monitoring is not currently enabled for this snapshot.
>
> But if you restart dmeventd (kill the process and it'll restart next
> time you activate the snapshot) it should work.
Looks like "service lvm2-monitor restart" should do this. Maybe
the update should restart this service?
> I'll have a look at how best to cope with this within lvm2 (either
> rpm upgrade triggers or...). But out of curiosity: had you upgraded
> lvm2 (lvm2-libs et al) prior to creating the snapshot and dmeventd was
> running prior to the upgrade?
Yes. Have not yet rebooted after the update. Strangely, this doesn't
seem to happen on 32-bit systems at the same update level with the same
update sequence.
The dmeventd was not restarted with the lvm2 update. There is some
logic in lvm2-monitor about when stopping dmeventd is dangerous, but
it doesn't seem to think a restart is dangerous.
--
Stuart D. Gathman <stuart at bmsi.com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.
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