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Thanks for all your feedback.=0A=
=0A=
Im trying to collect all the infos in BZ1462504.=0A=
=0A=
________________________________________=0A=
Von: Fabrice Bacchella [fabrice.bacchella(a)orange.fr]=0A=
Gesendet: Sonntag, 18. Juni 2017 10:13=0A=
An: Idan Shaby=0A=
Cc: Markus Stockhausen; Ovirt Users=0A=
Betreff: Re: [ovirt-users] OVirt 4.1.2 - trim/discard on HDD/XFS/NFS contra=
productive=0A=
=0A=
Le 18 juin 2017 =E0 08:00, Idan Shaby <ishaby(a)redhat.com> a
=E9crit :=0A=
If you don't need live discarding, shutdown the VM and disable the "Enabl=
e Discard" option. That will cause qemu to ignore the live UNMAP SCSI comma=
nds coming from the guest and not pass it on to the underlying storage.=0A=
Note that this makes fstrim completely redundant, as the purpose of
the c=
ommand is to discard unused blocks under the given path.=0A=
=0A=
Redundant ? Useless you mean ? From my comprehension, the purpose to fstrim=
is to send UNMAP SCSI on batch instead of mount -o discard that send them =
synchronously.=0A=
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