: Kevin Wolf kw...@redhat.com
À: Josh Durgin josh.dur...@inktank.com
Cc: Alexandre DERUMIER aderum...@odiso.com, ceph-users@lists.ceph.com,
qemu-devel qemu-de...@nongnu.org
Envoyé: Mardi 22 Avril 2014 11:08:08
Objet: Re: [Qemu-devel] [ceph-users] qemu + rbd block driver with
cache=writeback
Am 12.04.2014 um 17:01 hat Alexandre DERUMIER geschrieben:
Hello,
I known that qemu live migration with disk with cache=writeback are not safe
with storage like nfs,iscsi...
Is it also true with rbd ?
First of all, in order to avoid misunderstandings, let's be clear that
there are three
Am 19.04.2014 um 00:33 hat Josh Durgin geschrieben:
On 04/18/2014 10:47 AM, Alexandre DERUMIER wrote:
Thanks Kevin for for the full explain!
cache.writeback=on,cache.direct=off,cache.no-flush=off
I didn't known about the cache options split,thanks.
rbd does, to my knowledge, not use
...@inktank.com
À: Alexandre DERUMIER aderum...@odiso.com, Kevin Wolf kw...@redhat.com
Cc: ceph-users@lists.ceph.com, qemu-devel qemu-de...@nongnu.org
Envoyé: Samedi 19 Avril 2014 00:33:12
Objet: Re: [ceph-users] [Qemu-devel] qemu + rbd block driver with
cache=writeback, is live migration safe ?
On 04
Thanks Kevin for for the full explain!
cache.writeback=on,cache.direct=off,cache.no-flush=off
I didn't known about the cache options split,thanks.
rbd does, to my knowledge, not use the kernel page cache, so we're safe
from that part. It does however honour the cache.direct flag when it
On 04/18/2014 10:47 AM, Alexandre DERUMIER wrote:
Thanks Kevin for for the full explain!
cache.writeback=on,cache.direct=off,cache.no-flush=off
I didn't known about the cache options split,thanks.
rbd does, to my knowledge, not use the kernel page cache, so we're safe
from that part. It
