NEON / SIMD

2014-10-11 Thread Loic Dachary
Hi Janne, I'd like to learn more about SIMD and NEON. What documents / web site would you recommend to begin ? There are http://projectne10.github.io/Ne10/ http://www.arm.com/products/processors/technologies/neon.php Are you using formal specifications / documentations ? Any hint would be most

Re: RHEL7 source packages

2014-10-11 Thread Loic Dachary
[sent mail by mistake, here is the full version ;-] On 11/10/2014 17:44, Loic Dachary wrote: > Hi Ceph, > > I find this line in https://github.com/ceph/ceph/blob/giant/ceph.spec.in#L382 > > %if (0%{?rhel} || 0%{?rhel} < 7) > > odd because it looks like exactly the same as > > %if 0%{?rhel} >

RHEL7 source packages

2014-10-11 Thread Loic Dachary
Hi Ceph, I find this line in https://github.com/ceph/ceph/blob/giant/ceph.spec.in#L382 %if (0%{?rhel} || 0%{?rhel} < 7) odd because it looks like exactly the same as %if 0%{?rhel} But it has been added a long time ago -- Loïc Dachary, Artisan Logiciel Libre signature.asc Description: Ope

Re: [Qemu-devel] qemu drive-mirror to rbd storage : no sparse rbd image

2014-10-11 Thread Andrey Korolyov
On Sat, Oct 11, 2014 at 12:25 PM, Fam Zheng 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

Re: [Qemu-devel] qemu drive-mirror to rbd storage : no sparse rbd image

2014-10-11 Thread Fam Zheng
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-

Re: [Qemu-devel] qemu drive-mirror to rbd storage : no sparse rbd image

2014-10-11 Thread Alexandre DERUMIER
>>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. Thanks for your reply, I had tried driv

Re: [Qemu-devel] qemu drive-mirror to rbd storage : no sparse rbd image

2014-10-11 Thread Fam Zheng
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 i