[linux-lvm] thin discards
Zdenek Kabelac
zkabelac at redhat.com
Mon Jul 22 10:16:24 UTC 2013
Dne 22.7.2013 12:12, Raymond Jennings napsal(a):
> I tried to run a fstrim on a mounted snapshot (regular snapshot, not thin
> snapshot) and got zip.
>
I've been talking about thin snapshots.
Of course - for old non-thin snapshot - TRIM is not supported.
(And it doesn't look like anything simple to implement)
Zdenek
>
>
> On Mon, Jul 22, 2013 at 2:47 AM, Zdenek Kabelac <zkabelac at redhat.com
> <mailto:zkabelac at redhat.com>> wrote:
>
> Dne 21.7.2013 21:40, Zdenek Kabelac napsal(a):
>
> Dne 21.7.2013 13:01, Raymond Jennings napsal(a):
>
> Do snapshots behave the same way as thin volumes wrt discards?
>
>
> Yes, snapshots are just like any other thin volumes.
>
> Just a side note - until I think 3.9 kernel there used to be
> bug, which had wrong ref-counting of shared blocks.
>
> Zdenek
>
>
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