[CentOS] how to resize a partition of a disk define as a physical volume
Bernard Fay
bernard.fay at gmail.com
Wed Feb 22 13:17:40 UTC 2017
I should have added the output of pvs:
[root ~]# pvs
PV VG Fmt Attr PSize PFree
/dev/xvda2 cl_vm731611 lvm2 a-- 9.00g 0
PFree still show 0. It should show 5g.
Also:
[root ~]# pvdisplay /dev/xvda2
--- Physical volume ---
PV Name /dev/xvda2
VG Name cl_vm731611
PV Size 9.00 GiB / not usable 2.00 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 2303
Free PE 0
Allocated PE 2303
PV UUID RtXa0c-07RP-RJ0V-kSjC-Tuo0-5QQv-sQIKlr
With fdisk, we can see the additional space has is there as it shows 16GB.
The original disk had 10GB.
[root ~]# fdisk -l /dev/xvda
Disk /dev/xvda: 16.1 GB, 16106127360 bytes, 31457280 sectors
[snip]
Device Boot Start End Blocks Id System
/dev/xvda1 * 2048 2099199 1048576 83 Linux
/dev/xvda2 2099200 20971519 9436160 8e Linux LVM
vgs also shows 0 Free PE:
[root at CTSSVN01 ~]# vgs
VG #PV #LV #SN Attr VSize VFree
cl_vm731611 1 2 0 wz--n- 9.00g 0
Thanks,
On Wed, Feb 22, 2017 at 8:06 AM, Jon LaBadie <jcu at labadie.us> wrote:
> On Wed, Feb 22, 2017 at 07:44:33AM -0500, Bernard Fay wrote:
> > Hello,
> >
> > I have a CentOS VM with only one disk on a Xenserver.
> >
> > The disk has 2 partitions:
> >
> > /dev/xvda1 -> /boot
> > /dev/xvda2 -> a physical volume for LVM
> >
> >
> > I added 5GB to this disk via Xencenter to extend /dev/xvda2. Usually I
> > just have to do "pvresize /dev/xvda" to have the additional space added
> to
> > the disk. But for some reason it does not work for this disk.
> >
> > [root ~]# pvresize /dev/xvda
> > Failed to find physical volume "/dev/xvda".
> > 0 physical volume(s) resized / 0 physical volume(s) not resized
> >
> > [root ~]# pvresize /dev/xvda2
> > Physical volume "/dev/xvda2" changed
> > 1 physical volume(s) resized / 0 physical volume(s) not resized
> >
> >
> > Does someone have seen this problem before or could have an idea of the
> > problem?
>
> Looks like xvda2 was resized. You should now have an added
> 5GB worth of unallocated extents in the vg
>
> --
> Jon H. LaBadie jon at jgcomp.com
> 11226 South Shore Rd. (703) 787-0688 (H)
> Reston, VA 20190 (703) 935-6720 (C)
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