Alexandre Derumier
Ingénieur système et stockage
Fixe : 03 20 68 90 88
Fax : 03 20 68 90 81
45 Bvd du Général Leclerc 59100 Roubaix
12 rue Marivaux 75002 Paris
MonSiteEstLent.com - Blog dédié à la webperformance et la gestion de pics de
trafic
De: "Wido den Hollander" <w...@42on.com>
À: "ceph-users" <ceph-users@lists.ceph.com>
Envoyé: Mardi 16 Décembre 2014 16:18:09
Objet: Re: [ceph-users] rbd snapshot slow restore
On 12/16/2014 04:14 PM, Carl-Johan Schenström wrote:
> On 2014-12-16 14:53, Lindsay Mathieson wrote:
>
>>> Is this normal? is ceph just really slow at restoring rbd snapshots,
>>> or have I really borked my setup?
>>
>> I'm not looking for a fix or a tuning suggestions, just feedback on
>> whether
>> this is normal
>
> That is my experience as well. I rolled back a 1,5 TB volume once, and
> had to leave it running overnight before it would complete.
>
That is normal behavior. Snapshotting itself is a fast process, but
restoring means merging and rolling back.
It's easier to protect a snapshot and clone it into a new image and use
that one.
Afterwards you can flatten the image to detach the clone from the
parent. Never tried if this can be done live.
--
Wido den Hollander
42on B.V.
Ceph trainer and consultant
Phone: +31 (0)20 700 9902
Skype: contact42on
_______________________________________________
ceph-users mailing list
ceph-users@lists.ceph.com
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
_______________________________________________
ceph-users mailing list
ceph-users@lists.ceph.com
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
