Re: [ovirt-users] Reclaim/Trim/issue_discards : how to inform my LUNs about disk space waste?
Le 22/07/2014 14:23, Federico Simoncelli a écrit :
----- Original Message -----
> From: "Nicolas Ecarnot" <nicolas(a)ecarnot.net>
> To: "users" <users(a)ovirt.org>
> Sent: Thursday, July 3, 2014 10:54:57 AM
> Subject: [ovirt-users] Reclaim/Trim/issue_discards : how to inform my LUNs about disk
space waste?
>
> Hi,
>
> In my hosts, I see that /etc/lvm/lvm.conf shows :
>
> issue_discards = 0
>
> Can I enable it to 1 ?
>
> Thank you?
You can change it but it's not going to affect the lvm behavior in VDSM
since we don't use the host lvm config file.
Frederico,
May you describe a little more how it's done, explain the principle, or
point us to a place where we can learn more about how LVM is used in
oVirt, amongst the manager and the hosts.
Thank you.
This will be probably addressed as part of bz1017284 as we're considering
to extend discard also to vdsm images (and not direct luns only).
https://bugzilla.redhat.com/show_bug.cgi?id=1017284
--
Nicolas Ecarnot