[linux-lvm] Cannot create a logical volume
Jaroslav Stava
jstava at redhat.com
Fri Sep 12 16:54:25 UTC 2008
Vikas wrote:
> Objective: Be able to take snapshots of XEN disk images for backup.
>
> Problem: lvcreate is failing
>
> The environment:
>
> [root at localhost ~]# pvscan
> PV /dev/md3 VG gt_vg lvm2 [909.91 GB / 909.91 GB free]
> Total: 1 [909.91 GB] / in use: 1 [909.91 GB] / in no VG: 0 [0 ]
>
> [root at localhost ~]# vgscan
> Reading all physical volumes. This may take a while...
> Found volume group "gt_vg" using metadata type lvm2
>
> [root at localhost ~]# vgdisplay gt_vg
> --- Volume group ---
> VG Name gt_vg
> System ID
> Format lvm2
> Metadata Areas 1
> Metadata Sequence No 7
> VG Access read/write
> VG Status resizable
> MAX LV 0
> Cur LV 0
> Open LV 0
> Max PV 0
> Cur PV 1
> Act PV 1
> VG Size 909.91 GB
> PE Size 32.00 MB
> Total PE 29117
> Alloc PE / Size 0 / 0
> Free PE / Size 29117 / 909.91 GB
> VG UUID j4aEP0-PCwG-Qyub-DCxw-aVVp-VyCK-EkZUsN
>
> [root at localhost ~]# lvcreate -L 5G -n data gt_vg
> Not enough PVs with free space available for parallel allocation.
> Consider --alloc anywhere if desperate.
>
> Any feedback would be very much appreciated,
>
> Thanks for your time,
>
>
AFAIK this message should be seen only when trying to create a mirrored
or striped lv.
Post at least the log of -vvv run, so we can guess why this is happening.
Posting extended lvm info could be helpful too - try lvmdump.
Regards,
Jaroslav Stava
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