[linux-lvm] What do these messages mean?

[linux-lvm] What do these messages mean?

[Orion Poplawski]

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I'm guessing this simply indicates that the kernel device name 
associated with the PV has changed.  Is that correct?

Jul 28 16:50:58 hostname lvm[1424]:   PVID 
6seLWa-Oz2d-jZIC-Ox17-MPaB-QGu5-uElsKN read from /dev/sdb1 last written 
to /dev/sdd1.

No idea what this means.  Should we be using quick activation?  Is it a 
result of the above?

Jul 28 16:50:58 hostname lvm[1424]:   pvscan[1424] VG vg_leka not using 
quick activation.

Thanks!

-- 
Orion Poplawski
Manager of NWRA Technical Systems          720-772-5637
NWRA, Boulder/CoRA Office             FAX: 303-415-9702
3380 Mitchell Lane                       orion@nwra.com
Boulder, CO 80301                 https://www.nwra.com/


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Re: [linux-lvm] What do these messages mean?

[David Teigland]

On Thu, Jul 30, 2020 at 02:34:40PM -0600, Orion Poplawski wrote:
> I'm guessing this simply indicates that the kernel device name associated
> with the PV has changed.  Is that correct?

yes
 
> Jul 28 16:50:58 hostname lvm[1424]:   PVID
> 6seLWa-Oz2d-jZIC-Ox17-MPaB-QGu5-uElsKN read from /dev/sdb1 last written to
> /dev/sdd1.

When the VG was last updated the PV was on sdd1, now it's on sdb1.

> No idea what this means.  Should we be using quick activation?  Is it a
> result of the above?
> 
> Jul 28 16:50:58 hostname lvm[1424]:   pvscan[1424] VG vg_leka not using
> quick activation.

The activation of the VG from pvscan is not being optimized, because of
the device name change.  That's not a problem, just informative.

Usually, I think these messages only appear in systemctl status for the
lvm2-pvscan service.

Dave