[CentOS] how to resize a partition of a disk define as a physical volume

Istimsak Abdulbasir saqman2060 at gmail.com
Wed Feb 22 18:03:28 UTC 2017


On Feb 22, 2017 7:45 AM, "Bernard Fay" <bernard.fay at gmail.com> 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

K

Xvda does not seem to be read as an LVM volume. Xvda2 is handled by lvm so
this can be resized. However xvda is just the harddrive itself. From what I
have learned using lvm briefly, you can only resize lvm volumes or
partitions created using lvm.

[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
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