[DRBD-user] Storage driver 'LVM_THIN' not allowed for volume

[kvaps]

That's way to go, thank you!

On Thu, May 9, 2019, 7:46 AM Gábor Hernádi <gabor.hernadi at linbit.com> wrote:

> Hi,
>
> I am quite sure that you actually don't want Linstor / DRBD to migrate a
> volume from a LVM pool into a volume from a LVM_THIN pool. If you would do
> that, DRBD would (have to) trigger a full resync, replcating the whole
> content of the LVM volume to the LVM_THIN volume, making the usage of the
> thin provisioning completely useless.
>
> One possibility is to manually copy the data to the new LVM_THIN volume,
> which should be named exactly as the old one (as it has to be in a
> different pool, there should be no naming conflict). Once the copy is
> finished, remove all linstor resources of that resource-definition, and
> re-add the resources using the new LVM_THIN storage pool. Linstor's LVM
> driver (and thus also the LVM_THIN driver) only looks for the
> pool/identfier combination. If that matches, Linstor just starts using it.
> If you also successfully copied the DRBD metadata, also the DRBD layer will
> find them and basically the whole satellite no-ops (beside a safety
> "drbdadm adjust <resource_name>")
>
> Hope that helps,
> Gabor
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