Re: Underlying physical volume resized?!

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> On 18/11/2016 04:43, Marian Csontos wrote:

Hi, the warning was added only recently - commit c0912af3 added 2016-01-22:

https://git.fedorahosted.org/cgit/lvm2.git/commit/?id=c0912af3104cb72ea275d90b8b1d68a25a9ca48a

Ok, this explain why I only recently saw this warning

Were the partitions created by anaconda?
This might be an installer bug.

LVM allows overriding PV size to be larger than device size.

More about the feature here:
https://bugzilla.redhat.com/show_bug.cgi?id=1323950

I do not think pvmove could help here, as there will be read errors on
the device.

This a cloud VM not directly installed by me, rather from the cloud provider. I think they somewhat messed up their template partition table but, with no warning and no apparent error, the problem was unrecognized

Deactivating swap (`swapoff /dev/$VG/$LV`)
deleting the swap LV (`lvremove $VG/$LV`)
shrinking the PV (simply running `pvresize /dev/sda2` without arguments),
recreating the swap LV (`lvcreate -n $LV -L $SIZE $VG`),
`mkswap /dev/$VG/$LV`
and `swapon /dev/$VG/$LV`
should do.

This is a production machine, so I am somewhat reluctant to shrink swap/physical volumes. From what I understand (and from my own testing on a test machine) this slight discrepancy between partition and PV *should* pose no problems to my setup. At most, when swap is full, I can receive an error about a failed page swapping. Is this assumption correct?

Thank you very much.

--
Danti Gionatan
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Assyoma S.r.l. - www.assyoma.it
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