Re: [Qemu-devel] [libvirt-users] Adjust disk image migration (NBD)

2014-03-20 Thread Stefan Hajnoczi
On Tue, Mar 11, 2014 at 06:13:18PM +0100, Joaquim Barrera wrote: > On 28/02/14 11:43, Paolo Bonzini wrote: > >Il 28/02/2014 11:41, Joaquim Barrera ha scritto: > >>> > >> > >>Thanks for the answer. Something is still not clear to me. Are we in > >>front of a bug (that means, something that could be

Re: [Qemu-devel] [libvirt-users] Adjust disk image migration (NBD)

2014-03-11 Thread Joaquim Barrera
On 28/02/14 11:43, Paolo Bonzini wrote: Il 28/02/2014 11:41, Joaquim Barrera ha scritto: Thanks for the answer. Something is still not clear to me. Are we in front of a bug (that means, something that could be fixed) or is this behaviour somehow expected for some reason? More and more tests

Re: [Qemu-devel] [libvirt-users] Adjust disk image migration (NBD)

2014-02-28 Thread Joaquim Barrera
On 24/02/14 23:26, Paolo Bonzini wrote: Thanks for raising this. I noticed that mirror_run() does not throttle the first loop where it populates the dirty bitmap using bdrv_is_allocated_above(). This is on purpose. Does it causes a noticeable stall in the guest? The main copy loop does take

Re: [Qemu-devel] [libvirt-users] Adjust disk image migration (NBD)

2014-02-28 Thread Paolo Bonzini
Il 28/02/2014 11:41, Joaquim Barrera ha scritto: Thanks for the answer. Something is still not clear to me. Are we in front of a bug (that means, something that could be fixed) or is this behaviour somehow expected for some reason? More and more tests I am doing, I get allways the same through

Re: [Qemu-devel] [libvirt-users] Adjust disk image migration (NBD)

2014-02-24 Thread Paolo Bonzini
> Thanks for raising this. > > I noticed that mirror_run() does not throttle the first loop where it > populates the dirty bitmap using bdrv_is_allocated_above(). This is on purpose. Does it causes a noticeable stall in the guest? > The main > copy loop does take the speed limit into account bu

Re: [Qemu-devel] [libvirt-users] Adjust disk image migration (NBD)

2014-02-24 Thread Stefan Hajnoczi
On Fri, Feb 14, 2014 at 11:58:56AM +0100, Michal Privoznik wrote: > On 14.02.2014 10:40, Joaquim Barrera wrote: > > Hi all, > > > > As I am doing some tests with qemu, I realized that the way it does > > 'migrate -i tcp:DEST:444' is not the same as 'libvirt migrate > > --copy-storage-inc'. Basic

Re: [Qemu-devel] [libvirt-users] Adjust disk image migration (NBD)

2014-02-14 Thread Michal Privoznik
On 14.02.2014 10:40, Joaquim Barrera wrote: > Hi all, > > As I am doing some tests with qemu, I realized that the way it does > 'migrate -i tcp:DEST:444' is not the same as 'libvirt migrate > --copy-storage-inc'. Basically qemu uses the same stream as RAM > migration and libvirt takes advantage