[Users] Best practice to resize a WM disk image

[Marcelo Barbosa]

Alex,

   Suggestion for use GlusterFS to oVirt, look:


http://www.gluster.org/2012/07/installing-ovirt-3-1-and-glusterfs-using-either-nfs-or-posix-native-file-system-node-install-2/

Marcelo Barbosa
*mr.marcelo.barbosa at gmail.com*


On Wed, Jan 9, 2013 at 10:10 AM, Alexandre Santos <santosam72 at gmail.com>wrote:

> 2013/1/9 Karli Sjöberg <Karli.Sjoberg at slu.se>:
> > tis 2013-01-08 klockan 11:03 -0500 skrev Yeela Kaplan:
> >
> > So, first of all, you should know that resizing a disk is not yet
> supported
> > in oVirt.
> > If you decide that you must use it anyway, you should know in advance
> that
> > it's not recommended,
> > and that your data is at risk when you perform these kind of actions.
> >
> > There are several ways to perform this.
> > One of them is to create a second (larger) disk for the vm,
> > run the vm from live cd and use dd to copy the first disk contents into
> the
> > second one,
> > and finally remove the first disk and make sure that the new disk is
> > configured as your system disk.
> >
> > Here you guide for the dd operation to be done from within the guest
> system,
> > but booted from live.
> > Can this be done directly from the NFS storage itself instead?
> >
> >
> > The second, riskier, option is to export the vm to an export domain,
> > resize the image volume size to the new larger size using qemu-img and
> also
> > modify the vm's metadata in its ovf,
> > as you can see this option is more complicated and requires deeper
> > understanding and altering of the metadata...
> > finally you'll need to import the vm back.
> >
> >
> >
> > ----- Original Message -----
> >> From: "Rocky" <rockybaloo at gmail.com>
> >> To: "Yeela Kaplan" <ykaplan at redhat.com>
> >> Cc: Users at ovirt.org
> >> Sent: Tuesday, January 8, 2013 11:30:00 AM
> >> Subject: Re: [Users] Best practice to resize a WM disk image
> >>
> >> Its just a theoretical question as I think the issue will come for us
> >> and other users.
> >>
> >> I think there can be one or more snapshots in the WM over the time.
> >> But
> >> if that is an issue we can always collapse them I think.
> >> If its a base image it should be RAW, right?
> >> In this case its on file storage (NFS).
> >>
> >> Regards //Ricky
> >>
> >> On 2013-01-08 10:07, Yeela Kaplan wrote:
> >> > Hi Ricky,
> >> > In order to give you a detailed answer I need additional details
> >> > regarding the disk:
> >> > - Is the disk image composed as a chain of volumes or just a base
> >> > volume?
> >> > (if it's a chain it will be more complicated, you might want to
> >> > collapse the chain first to make it easier).
> >> > - Is the disk image raw? (you can use qemu-img info to check)
> >> > - Is the disk image on block or file storage?
> >> >
> >> > Regards,
> >> > Yeela
> >> >
> >> > ----- Original Message -----
> >> >> From: "Ricky" <rockybaloo at gmail.com>
> >> >> To: Users at ovirt.org
> >> >> Sent: Tuesday, January 8, 2013 10:40:27 AM
> >> >> Subject: [Users] Best practice to resize a WM disk image
> >> >>
> >> >> Hi,
> >> >>
> >> >> If I have a VM that has run out of disk space, how can I increase
> >> >> the
> >> >> space in best way? One way is to add a second bigger disk to the
> >> >> WM
> >> >> and then use dd or similar to copy. But is it possible to stretch
> >> >> the
> >> >> original disk inside or outside oVirt and get oVirt to know the
> >> >> bigger
> >> >> size?
> >> >>
> >> >> Regards //Ricky
> >> >> _______________________________________________
> >> >> Users mailing list
> >> >> Users at ovirt.org
> >> >> http://lists.ovirt.org/mailman/listinfo/users
> >> >>
> >>
> >>
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> >
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> >
>
> Sorry for this a bit "off topic" but I've been "resizing" my VM just
> by adding new disks to the VM and then using the LVM tool or just
> adding it to fstab.
> I know that it's not a true resizing but it has been a good solution
> for me. Once a Oracle DB (a XE used for tests:-)) went down because my
> disk went full (it was 8GB) and I added a new disk, moved the dbf to
> this new disk and restarted Oracle, without having to reboot the VM.
>
> Alex
> _______________________________________________
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>
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