[CentOS] is it possible to resive /var online?

Sun May 2 21:28:30 UTC 2010
Rudi Ahlers <rudiahlers at gmail.com>

On Sun, May 2, 2010 at 11:13 PM, Kwan Lowe <kwan.lowe at gmail.com> wrote:

> On Sun, May 2, 2010 at 5:01 PM, Rudi Ahlers <rudiahlers at gmail.com> wrote:
>
> >
> > heh, there's plenty space left on the drive:
> >
> > [root at zaxen02 ~]# pvscan
> >   PV /dev/md1   VG LVM01   lvm2 [232.69 GB / 141.69 GB free]
> >   Total: 1 [232.69 GB] / in use: 1 [232.69 GB] / in no VG: 0 [0   ]
> >
> > As far as I know, one needs to unmount a volume in order to resize it,
> but
> > /var can't be unmounted.
>
> With LVM you don't need to unmount /var. You can do it on a running
> system with the following caveats:
>
> 1) You'll need some free space on /var. I.e., not extra space in the
> volume group, but a little extra space in the /var partition itself.
> In other words, don't try to resize a completely full /var partition.
>
> 2) There is a possibility that you'll need to resize some metadata. If
> so, this has to be done offline via a boot disk for /var.
>  _______________________________________________
>

That's exactly as I thought :)

For now, a safer way around this, I moved the /var/lib/xend/saved folder to
it's own LVM volume, and re-mounted it on /var/lib/xend.

So now /var has 1.4GB free space from 2GB





>  --
> Kind Regards
> Rudi Ahlers
> SoftDux
>
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