Re: [Qemu-devel] qcow2 corruption observed, fixed by reverting old change

2009-03-06 Thread Filip Navara
On Wed, Feb 11, 2009 at 5:48 PM, Jamie Lokier wrote: > Kevin Wolf wrote: >> Besides reviewing the code over and over again, I think the only real >> chance is that you can get a non-productive copy of your image and add >> some debug code so that we can see at least which code path is causing >> p

Re: [Qemu-devel] qcow2 corruption observed, fixed by reverting old change

2009-02-16 Thread Jamie Lokier
Kevin Wolf wrote: > >> By the way and completely off-topic: Have you already tried to use the > >> VHD patches? I would really like to know if they fix your problems. > > > > Are those patches in kvm-83? I still have the image that was causing > > problems way back, and I'm converting it to raw n

Re: [Qemu-devel] qcow2 corruption observed, fixed by reverting old change

2009-02-16 Thread Kevin Wolf
Jamie Lokier schrieb: > Kevin Wolf wrote: >> Besides reviewing the code over and over again, I think the only real >> chance is that you can get a non-productive copy of your image and add >> some debug code so that we can see at least which code path is causing >> problems. > > I have a copy of m

Re: [Qemu-devel] qcow2 corruption observed, fixed by reverting old change

2009-02-12 Thread Johannes Schindelin
Hi, On Wed, 11 Feb 2009, Chris Wright wrote: > * Kevin Wolf (kw...@suse.de) wrote: > > I would suspect that simply having a 64 bit host isn't enough to trigger > > the problem. These patches were in for half a year now without anyone > > noticing such failure. > > BTW, we've seen similar corrupt

Re: [Qemu-devel] qcow2 corruption observed, fixed by reverting old change

2009-02-11 Thread Chris Wright
* Kevin Wolf (kw...@suse.de) wrote: > I would suspect that simply having a 64 bit host isn't enough to trigger > the problem. These patches were in for half a year now without anyone > noticing such failure. BTW, we've seen similar corruption, but not narrowed it down successfully as it's been qui

Re: [Qemu-devel] qcow2 corruption observed, fixed by reverting old change

2009-02-11 Thread Jamie Lokier
Kevin Wolf wrote: > Besides reviewing the code over and over again, I think the only real > chance is that you can get a non-productive copy of your image and add > some debug code so that we can see at least which code path is causing > problems. I have a copy of my image to reproduce the bug, so

Re: [Qemu-devel] qcow2 corruption observed, fixed by reverting old change

2009-02-11 Thread Kevin Wolf
Jamie Lokier schrieb: > Kevin Wolf wrote: >> Jamie Lokier schrieb: >>> Although there are many ways to make Windows blue screen in KVM, in >>> this case I've narrowed it down to the difference in >>> qemu/block-qcow2.c between kvm-72 and kvm-73 (not -83). >> This must be one of SVN revisions 5003 t

Re: [Qemu-devel] qcow2 corruption observed, fixed by reverting old change

2009-02-11 Thread Jamie Lokier
Kevin Wolf wrote: > Jamie Lokier schrieb: > > Although there are many ways to make Windows blue screen in KVM, in > > this case I've narrowed it down to the difference in > > qemu/block-qcow2.c between kvm-72 and kvm-73 (not -83). > > This must be one of SVN revisions 5003 to 5008 in upstream qemu

Re: [Qemu-devel] qcow2 corruption observed, fixed by reverting old change

2009-02-11 Thread Jamie Lokier
Kevin Wolf wrote: > Jamie Lokier schrieb: > > Although there are many ways to make Windows blue screen in KVM, in > > this case I've narrowed it down to the difference in > > qemu/block-qcow2.c between kvm-72 and kvm-73 (not -83). > > This must be one of SVN revisions 5003 to 5008 in upstream qemu

Re: [Qemu-devel] qcow2 corruption observed, fixed by reverting old change

2009-02-11 Thread Kevin Wolf
Jamie Lokier schrieb: > Although there are many ways to make Windows blue screen in KVM, in > this case I've narrowed it down to the difference in > qemu/block-qcow2.c between kvm-72 and kvm-73 (not -83). This must be one of SVN revisions 5003 to 5008 in upstream qemu. Can you narrow it down to on