Lack of bdrv_co_write_zeroes is why detect-zeroes does not work.
Lack of bdrv_get_block_status is why sparse-sparse does not work
without detect-zeroes.
Ok, thanks Paolo !
Both are missing in rbd block driver. @ceph-devel . Could it be possible to
implement them ?
Also, about drive-mirror,
Il 13/10/2014 08:06, Alexandre DERUMIER ha scritto:
Also, about drive-mirror, I had tried with detect-zeroes with simple qcow2
file,
and It don't seem to help.
I'm not sure that detect-zeroes is implement in drive-mirror.
also, the target mirrored volume don't seem to have the
Ah, you're right. We need to add an options field, or use a new
blockdev-mirror command.
Ok, thanks. Can't help to implement this, but I'll glad to help for testing.
- Mail original -
De: Paolo Bonzini pbonz...@redhat.com
À: Alexandre DERUMIER aderum...@odiso.com
Cc: Ceph Devel
...@vger.kernel.org
Envoyé: Samedi 11 Octobre 2014 10:30:40
Objet: Re: [Qemu-devel] qemu drive-mirror to rbd storage : no sparse rbd image
On Sat, Oct 11, 2014 at 12:25 PM, Fam Zheng f...@redhat.com wrote:
On Sat, 10/11 10:00, Alexandre DERUMIER wrote:
What is the source format? If the zero
-mirror to rbd storage : no sparse rbd image
On Sat, 10/11 10:00, Alexandre DERUMIER wrote:
What is the source format? If the zero clusters are actually unallocated in
the
source image, drive-mirror will not write those clusters either. I.e. with
drive-mirror sync=top, both source and target
Il 08/10/2014 13:15, Alexandre DERUMIER ha scritto:
Hi,
I'm currently planning to migrate our storage to ceph/rbd through qemu
drive-mirror
and It seem that drive-mirror with rbd block driver, don't create a sparse
image. (all zeros are copied to the target rbd).
Also note, that it's
On Wed, 10/08 13:15, Alexandre DERUMIER wrote:
Hi,
I'm currently planning to migrate our storage to ceph/rbd through qemu
drive-mirror
and It seem that drive-mirror with rbd block driver, don't create a sparse
image. (all zeros are copied to the target rbd).
Also note, that it's
Envoyé: Samedi 11 Octobre 2014 09:01:18
Objet: Re: [Qemu-devel] qemu drive-mirror to rbd storage : no sparse rbd image
On Wed, 10/08 13:15, Alexandre DERUMIER wrote:
Hi,
I'm currently planning to migrate our storage to ceph/rbd through qemu
drive-mirror
and It seem that drive-mirror with rbd
On Sat, 10/11 10:00, Alexandre DERUMIER wrote:
What is the source format? If the zero clusters are actually unallocated in
the
source image, drive-mirror will not write those clusters either. I.e. with
drive-mirror sync=top, both source and target should have the same
qemu-img
map output.
On Sat, Oct 11, 2014 at 12:25 PM, Fam Zheng f...@redhat.com wrote:
On Sat, 10/11 10:00, Alexandre DERUMIER wrote:
What is the source format? If the zero clusters are actually unallocated
in the
source image, drive-mirror will not write those clusters either. I.e. with
drive-mirror sync=top,
Hi,
I'm currently planning to migrate our storage to ceph/rbd through qemu
drive-mirror
and It seem that drive-mirror with rbd block driver, don't create a sparse
image. (all zeros are copied to the target rbd).
Also note, that it's working fine with qemu-img convert , the rbd volume is
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