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Re: [linux-lvm] Re: error creating snapshots



On Tue, 2009-11-03 at 11:48 -0500, Stuart D. Gathman wrote:
> On Tue, 3 Nov 2009, Mike Snitzer wrote:
> 
> > > # lvcreate -s -L20G -n dmm_snap bms_data/dmm
> > >   bms_data-dmm_snap: event registration failed: 10071:3 
> > > libdevmapper-event-lvm2snapshot.so dlopen failed: 
> > > /usr/lib64/liblvm2cmd.so.2.02: undefined symbol: dm_list_empty
> > >   bms_data/snapshot0: snapshot segment monitoring function failed.
> > >   Logical volume "dmm_snap" created
> > 
> > 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.
> 
> How can restarting a daemon make a library symbol suddenly become defined?
> Isn't this a library issue?
> 

If the daemon has been running since before the package update it will
still use the old binary/library images. Killing and re-starting it will
force it to use the newly updated versions.

Regards,
Bryn.



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