[ovirt-users] Moving thin provisioned disks question

[Ala Hino]

On Tue, Jun 27, 2017 at 1:37 PM, InterNetX - Juergen Gotteswinter <
jg at internetx.com> wrote:

>
>
> Am 27.06.2017 um 11:27 schrieb Gianluca Cecchi:
> > Hello,
> > I have a storage domain that I have to empty, moving its disks to
> > another storage domain,
> >
> > Both source and target domains are iSCSI
> > What is the behavior in case of preallocated and thin provisioned disk?
> > Are they preserved with their initial configuration?
>
> yes, they stay within their initial configuration
>
> >
> > Suppose I have one 500Gb thin provisioned disk
> > Why can I indirectly see that the actual size is 300Gb only in Snapshots
> > tab --> Disks of its VM ?
>
> if you are using live storage migration, ovirt creates a qcow/lvm
> snapshot of the vm block device. but for whatever reason, it does NOT
> remove the snapshot after the migration has finished. you have to remove
> it yourself, otherwise disk usage will grow more and more.
>

I believe you are referring to the "Auto-generated" snapshot created during
live storage migration. This behavior is reported in
https://bugzilla.redhat.com/1317434 and fixed since 4.0.0.

>
> >
> > Thanks,
> > Gianluca
> >
> >
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> > Users at ovirt.org
> > http://lists.ovirt.org/mailman/listinfo/users
> >
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