From: Avi Kivity <avi@qumranet.com>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Re: NBD server for QEMU images
Date: Thu, 14 Dec 2006 10:34:24 +0200 [thread overview]
Message-ID: <45810C90.2070707@qumranet.com> (raw)
In-Reply-To: <elpj4s$dlj$1@sea.gmane.org>
Salvador Fandino wrote:
> I have run some tests and found that it's easy to cause a deadlock just
> untaring a file over an nbd device being served from localhost (using
> the standard nbd-server or my own, it doesn't matter).
>
> Another interesting finding is that when the deadlock happens, qemu-nbds
> is inside a read() call, waiting for new nbd requests to arrive over the
> socket, and so, not trying to allocate memory or writing to disk.
>
>
If you use sysrq-t and a serial console, you will find exactly how it's
waiting for memory.
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
next prev parent reply other threads:[~2006-12-14 8:34 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-12 12:48 [Qemu-devel] NBD server for QEMU images Salvador Fandiño
2006-12-12 13:37 ` Martin Guy
2006-12-12 17:00 ` [Qemu-devel] " Salvador Fandino
2006-12-12 16:58 ` Paul Brook
2006-12-12 17:13 ` Daniel Jacobowitz
2006-12-12 17:33 ` RE : " Sylvain Petreolle
2006-12-12 17:39 ` Paul Brook
2006-12-12 18:54 ` Anthony Liguori
2006-12-12 17:41 ` RE : " Johannes Schindelin
2006-12-12 17:42 ` Daniel Jacobowitz
2006-12-12 18:41 ` [Qemu-devel] Re: RE : " Salvador Fandino
2006-12-13 12:23 ` Jan Marten Simons
2006-12-13 19:03 ` Salvador Fandino
2006-12-13 20:03 ` Jim C. Brown
2006-12-13 22:07 ` Salvador Fandino
2006-12-13 22:55 ` Jim C. Brown
2006-12-14 8:37 ` Salvador Fandino
2006-12-14 14:58 ` Jim C. Brown
2006-12-12 19:00 ` Salvador Fandino
2006-12-12 17:45 ` [Qemu-devel] " Mark Williamson
2006-12-12 19:30 ` Christian MICHON
2006-12-12 15:09 ` Anthony Liguori
2006-12-12 17:32 ` Salvador Fandino
2006-12-12 20:13 ` Anthony Liguori
2006-12-13 2:14 ` Mark Williamson
2006-12-13 11:37 ` Avi Kivity
2006-12-13 13:19 ` Martin Guy
2006-12-13 13:29 ` Avi Kivity
2006-12-13 19:14 ` Salvador Fandino
2006-12-14 8:34 ` Avi Kivity [this message]
2006-12-13 16:58 ` [Qemu-devel] " Mulyadi Santosa
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