[linux-lvm] Again: duplicate PVs - filter rules
Zdenek Kabelac
zdenek.kabelac at gmail.com
Sat Jan 14 09:26:04 UTC 2017
Dne 14.1.2017 v 06:41 knebb at knebb.de napsal(a):
> Hi all,
>
> I thought my filter rules where fine now. But they are not.
>
> I have in /etc/lvm/lvm.conf:
>
> filter = [ "r|/dev/sdb|","r|/dev/sdc|" ]
>
> I scan my PVs:
>
> [root at backuppc ~]# pvscan --cache
> WARNING: PV AvK0Vn-vAdJ-K4nf-0N1x-u1fR-dlWG-dJezdg on /dev/sdc was
> already found on /dev/drbd1.
> WARNING: Disabling lvmetad cache which does not support duplicate PVs.
> WARNING: Not using lvmetad because duplicate PVs were found.
> [root at backuppc ~]# pvscan
> WARNING: PV AvK0Vn-vAdJ-K4nf-0N1x-u1fR-dlWG-dJezdg on /dev/sdc was
> already found on /dev/drbd1.
> WARNING: Disabling lvmetad cache which does not support duplicate PVs.
> WARNING: Not using lvmetad because duplicate PVs were found.
> PV /dev/sda2 VG cl lvm2 [15,00 GiB / 0 free]
> PV /dev/drbd1 VG test lvm2 [3,00 GiB / 0 free]
> Total: 2 [17,99 GiB] / in use: 2 [17,99 GiB] / in no VG: 0 [0 ]
>
> So question again, why does it accept my /dev/sdc as PV discarding
> filter rules?
'pvscan --cache' is different from other lvm commands - it controls filling
of 'lvmetad' from udev rules.
So if you plan to use lvmetad - you need to have uniqueness on 'global' level.
So that's why there is global_filter.
So you should copy your filter to global_filter.
Regards
Zdenek
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