[linux-lvm] lvmdiskscan and mouting a LVM2 loopback file
Bryn M. Reeves
bmr at redhat.com
Tue Jul 27 09:01:36 UTC 2010
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On 07/26/2010 08:40 PM, Benjamin Henrion wrote:
> ===============================================
> # lvmdiskscan
> /dev/loop0 [ 39.06 GiB] LVM physical volume
> /dev/root [ 222.79 GiB]
> /dev/sda5 [ 9.45 GiB]
> 1 disk
> 1 partition
> 0 LVM physical volume whole disks
> 1 LVM physical volume
> ===============================================
>
> But I don't know how to detect the logical volumes inside /dev/loop0.
>
> lvdisplay and vgdisplay says:
>
> =================================================
> # lvdisplay
> No volume groups found
> # vgdisplay
> No volume groups found
> =================================================
>
> Any idea how to get the volume and group back?
Can you post the output of the comand "pvs -a"?
It should look something like this:
sudo pvs -a
PV VG Fmt Attr PSize PFree
/dev/dm-1 -- 0 0
/dev/dm-2 -- 0 0
/dev/dm-3 -- 0 0
/dev/loop0 lvm2 -- 32.00M 32.00M
/dev/loop1 tvg0 lvm2 a- 28.00M 28.00M
/dev/ram0 -- 0 0
/dev/ram1 -- 0 0
/dev/ram10 -- 0 0
/dev/ram11 -- 0 0
/dev/ram12 -- 0 0
/dev/ram13 -- 0 0
/dev/ram14 -- 0 0
/dev/ram15 -- 0 0
/dev/ram2 -- 0 0
/dev/ram3 -- 0 0
/dev/ram4 -- 0 0
/dev/ram5 -- 0 0
/dev/ram6 -- 0 0
/dev/ram7 -- 0 0
/dev/ram8 -- 0 0
/dev/ram9 -- 0 0
/dev/root -- 0 0
/dev/sda1 -- 0 0
/dev/sda2 t60_vg0 lvm2 a- 93.03G 0
In that output loop0 is an orphan PV (i.e. it has not been assigned to
any VG yet) and loop1 contains a VG named "tvg0" (sda2 is my system VG).
Regards,
Bryn.
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