[pve-devel] [Enhancement request] Thin Provisionning problems.. need to zero LVM disks before deleting a VM
Floris Bos / Maxnet
bos at je-eigen-domein.nl
Wed Mar 7 14:40:28 CET 2012
On 03/07/2012 11:05 AM, Dietmar Maurer wrote:
>> Datacore suggests us to zero disks before doing lvremove to tell the SAN the
>> space is really available in order to allow San Melody to reclaim the unused
> Just found this: http://osdir.com/ml/linux-lvm/2011-02/msg00011.html
> The idea is to use TRIM??
I do not know if it's available in the LVM version shipped with Debian,
but in Centos 6 there is indeed the "issue_discards" setting you can set
in lvm.conf to issue trim commands to the drive when lvremove and
lvreduce is used.
> Just committed a fix:
> we do this for all LVs. Let's see if user complains.
Complaining user here.
I don't like the concept of extra writes being sent to my SSD. Not sure
if it detects zero writes automatically.
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