Re: [ovirt-users] Shrinking a storage domain
On Fri, Feb 26, 2016 at 5:31 PM, Troels Arvin <troels(a)arvin.dk> wrote:
Hello,
I'm moving some storage from one SAN storage unit to another SAN storage
unit (i.e.: block device storage). So I have two RHEV storage domains:
SD1
SD2
We need to move most of SD1s data to SD2.
Live storage migration for a guest works fine: It's easy to migrate a
disk from being in SD1 to SD2.
But now that I have released around half of SD1, I would like to let go
of a LUN which is part of SD1. How is that done?
Sorry, this is not supported.
Your only option is to move all disks from SD1, remove SD1, and recreate it.
(If this were a stand-
alone Linux box, I would use vgreduce to release a PV and then remove the
PV from the server.)
This should work on our vgs, but:
- It may move lvs from this pv to another pv, breaking our metadata
(stored in the metadata lv)
- Engine will have stale pvs for this vg, this may break your setup
If this feature is important for your, please file a bug and explain the
use case,
so we can consider this for future versions.
Nir
--
Regards,
Troels Arvin
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