Bernard Fay
2017-Feb-22 12:44 UTC
[CentOS] how to resize a partition of a disk define as a physical volume
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? Thanks, Bernard
Jon LaBadie
2017-Feb-22 13:06 UTC
[CentOS] how to resize a partition of a disk define as a physical volume
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)
Bernard Fay
2017-Feb-22 13:17 UTC
[CentOS] how to resize a partition of a disk define as a physical volume
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) > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos >
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