[linux-lvm] " Failed to find physical volume <ZFS block device"
zkabelac at redhat.com
Thu Sep 23 18:43:27 UTC 2021
Dne 23. 09. 21 v 20:03 alessandro macuz napsal(a):
> Thanks Zdenek,
> so it might be that metadata is corrupted somehow and hence the pvs program
> doesn't recognize that partition as physical volume?
> That may explain why lvmdiskscan reports physical disks (by just looking at
> the partition type 8e) and pvs completely ignores it.
> Am I correct?
Yes - if your disk header part has lost/damaged its content - it will not be
recognized as PV - thus completely ignored.
Note - the easiest is to check the verbose output of 'pvs -vvv' - where you
could follow up what is command doing in relatively 'readable' form - if you
can't follow it - just attach to the email for overlook why could be your disk
Note - the other reason could be the device got filtered by some filter - but
I assume you've not changed your configuration on your system ?
> Le jeu. 23 sept. 2021 à 15:52, Zdenek Kabelac <zkabelac at redhat.com> a écrit :
> Dne 22. 09. 21 v 18:48 alessandro macuz napsal(a):
> > fdisk correctly identifies the extended partition as 8e.
> > I wonder which kind of data lvmdiskscan and pvs use in order to list LVM
> > physical volumes.
> > Does PVS check some specific metadata within the partition without just
> > relying on the type of partition displayed by fdisk?
> Yes - PVs do have header signature keeping information about PV attributes
> and also has the storage area to keep lvm2 metadata.
> Partition flags known to fdisk are irrelevant.
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