Re: [Qemu-devel] "iothread: release iothread around aio_poll" causes random hangs at startup

2015-07-16 Thread Paolo Bonzini
On 16/07/2015 13:24, Christian Borntraeger wrote: > The interesting part is that this problem required 2 or more disk > (and we replace drain_all with single drains) so it somewhat sounds > plausible. Yes, indeed. It is very plausible. I wanted to reproduce it these days, so thanks for saving

Re: [Qemu-devel] "iothread: release iothread around aio_poll" causes random hangs at startup

2015-07-16 Thread Christian Borntraeger
Am 16.07.2015 um 13:20 schrieb Paolo Bonzini: > > > On 16/07/2015 13:03, Christian Borntraeger wrote: >> For what its worth, I can no longer reproduce the issue on >> current master + cherry-pick of a0710f7995f (iothread: release iothread >> around aio_poll) >> >> bisect tells me that >> >> comm

Re: [Qemu-devel] "iothread: release iothread around aio_poll" causes random hangs at startup

2015-07-16 Thread Paolo Bonzini
On 16/07/2015 13:03, Christian Borntraeger wrote: > For what its worth, I can no longer reproduce the issue on > current master + cherry-pick of a0710f7995f (iothread: release iothread > around aio_poll) > > bisect tells me that > > commit 53ec73e264f481b79b52efcadc9ceb8f8996975c > Author:

Re: [Qemu-devel] "iothread: release iothread around aio_poll" causes random hangs at startup

2015-07-16 Thread Christian Borntraeger
Am 10.06.2015 um 11:34 schrieb Fam Zheng: > On Wed, 06/10 11:18, Christian Borntraeger wrote: >> Am 10.06.2015 um 04:12 schrieb Fam Zheng: >>> On Tue, 06/09 11:01, Christian Borntraeger wrote: Am 09.06.2015 um 04:28 schrieb Fam Zheng: > On Tue, 06/02 16:36, Christian Borntraeger wrote: >>>

Re: [Qemu-devel] "iothread: release iothread around aio_poll" causes random hangs at startup

2015-06-10 Thread Christian Borntraeger
Am 10.06.2015 um 11:34 schrieb Fam Zheng: > On Wed, 06/10 11:18, Christian Borntraeger wrote: >> Am 10.06.2015 um 04:12 schrieb Fam Zheng: >>> On Tue, 06/09 11:01, Christian Borntraeger wrote: Am 09.06.2015 um 04:28 schrieb Fam Zheng: > On Tue, 06/02 16:36, Christian Borntraeger wrote: >>>

Re: [Qemu-devel] "iothread: release iothread around aio_poll" causes random hangs at startup

2015-06-10 Thread Fam Zheng
On Wed, 06/10 11:18, Christian Borntraeger wrote: > Am 10.06.2015 um 04:12 schrieb Fam Zheng: > > On Tue, 06/09 11:01, Christian Borntraeger wrote: > >> Am 09.06.2015 um 04:28 schrieb Fam Zheng: > >>> On Tue, 06/02 16:36, Christian Borntraeger wrote: > Paolo, > > I bisected > c

Re: [Qemu-devel] "iothread: release iothread around aio_poll" causes random hangs at startup

2015-06-10 Thread Christian Borntraeger
Am 10.06.2015 um 04:12 schrieb Fam Zheng: > On Tue, 06/09 11:01, Christian Borntraeger wrote: >> Am 09.06.2015 um 04:28 schrieb Fam Zheng: >>> On Tue, 06/02 16:36, Christian Borntraeger wrote: Paolo, I bisected commit a0710f7995f914e3044e5899bd8ff6c43c62f916 Author: Pa

Re: [Qemu-devel] "iothread: release iothread around aio_poll" causes random hangs at startup

2015-06-09 Thread Fam Zheng
On Tue, 06/09 11:01, Christian Borntraeger wrote: > Am 09.06.2015 um 04:28 schrieb Fam Zheng: > > On Tue, 06/02 16:36, Christian Borntraeger wrote: > >> Paolo, > >> > >> I bisected > >> commit a0710f7995f914e3044e5899bd8ff6c43c62f916 > >> Author: Paolo Bonzini > >> AuthorDate: Fri Feb 20 17:2

Re: [Qemu-devel] "iothread: release iothread around aio_poll" causes random hangs at startup

2015-06-09 Thread Christian Borntraeger
Am 09.06.2015 um 04:28 schrieb Fam Zheng: > On Tue, 06/02 16:36, Christian Borntraeger wrote: >> Paolo, >> >> I bisected >> commit a0710f7995f914e3044e5899bd8ff6c43c62f916 >> Author: Paolo Bonzini >> AuthorDate: Fri Feb 20 17:26:52 2015 +0100 >> Commit: Kevin Wolf >> CommitDate: Tue Apr

Re: [Qemu-devel] "iothread: release iothread around aio_poll" causes random hangs at startup

2015-06-08 Thread Fam Zheng
On Tue, 06/02 16:36, Christian Borntraeger wrote: > Paolo, > > I bisected > commit a0710f7995f914e3044e5899bd8ff6c43c62f916 > Author: Paolo Bonzini > AuthorDate: Fri Feb 20 17:26:52 2015 +0100 > Commit: Kevin Wolf > CommitDate: Tue Apr 28 15:36:08 2015 +0200 > > iothread: release i

Re: [Qemu-devel] "iothread: release iothread around aio_poll" causes random hangs at startup

2015-06-03 Thread Stefan Hajnoczi
On Tue, Jun 02, 2015 at 04:51:46PM +0200, Paolo Bonzini wrote: > > > On 02/06/2015 16:36, Christian Borntraeger wrote: > > commit a0710f7995f914e3044e5899bd8ff6c43c62f916 > > Author: Paolo Bonzini > > AuthorDate: Fri Feb 20 17:26:52 2015 +0100 > > Commit: Kevin Wolf > > CommitDate: Tue

[Qemu-devel] "iothread: release iothread around aio_poll" causes random hangs at startup

2015-06-02 Thread Christian Borntraeger
Paolo, I bisected commit a0710f7995f914e3044e5899bd8ff6c43c62f916 Author: Paolo Bonzini AuthorDate: Fri Feb 20 17:26:52 2015 +0100 Commit: Kevin Wolf CommitDate: Tue Apr 28 15:36:08 2015 +0200 iothread: release iothread around aio_poll to cause a problem with hanging guests. Havi

Re: [Qemu-devel] "iothread: release iothread around aio_poll" causes random hangs at startup

2015-06-02 Thread Paolo Bonzini
On 02/06/2015 16:36, Christian Borntraeger wrote: > commit a0710f7995f914e3044e5899bd8ff6c43c62f916 > Author: Paolo Bonzini > AuthorDate: Fri Feb 20 17:26:52 2015 +0100 > Commit: Kevin Wolf > CommitDate: Tue Apr 28 15:36:08 2015 +0200 > > iothread: release iothread around aio_poll