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

[SysAdmin]

Hi,

you need to resize partition /dev/xvda2, afterwards resize pv.

Regards,
Holger

> -----Ursprüngliche Nachricht-----
> Von: CentOS [mailto:centos-bounces at centos.org] Im Auftrag von Bernard
> Fay
> Gesendet: Mittwoch, 22. Februar 2017 14:18
> An: CentOS mailing list
> Betreff: Re: [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)
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> > CentOS at centos.org
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> >
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