From: Michael Young <m.a.young@durham.ac.uk>
To: xen-devel@lists.xen.org
Subject: Re: No graphics with xen pv and Fedora qemu
Date: Sun, 10 Jul 2016 16:44:41 +0100 [thread overview]
Message-ID: <alpine.LFD.2.20.1607101638090.3887@austen3.home> (raw)
In-Reply-To: <alpine.LFD.2.20.1606282027110.2462@austen3.home>
On Wed, 29 Jun 2016, Michael Young wrote:
> I have been trying to trace a problem when using Fedora's qemu with a pv
> guest which is that no graphics are available. I get the errors
>
> xen be core: xen be: watching backend path (backend/console/2) failed
> xen be core: xen be: watching backend path (backend/vkbd/2) failed
> xen be core: xen be: watching backend path (backend/vfb/2) failed
> xen be core: xen be: watching backend path (backend/qdisk/2) failed
> xen be core: xen be: watching backend path (backend/qnic/2) failed
>
> in the qemu log file in /var/log/xen . So far I have traced it to rbd
> support in qemu, because qemu-system-i386 built with the --disable-rbd
> does have working graphics.
I tracked this down eventually. The failure is in tools/xenstore/xs.c in
xs_watch when it tries to create a read pthread, because the initial stack
size of 16384 is apparently too small with qemu with rbd enabled. I did
get it to work if I increased the stack size to 24576.
Michael Young
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next prev parent reply other threads:[~2016-07-10 15:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-29 17:46 No graphics with xen pv and Fedora qemu Michael Young
2016-07-10 15:44 ` Michael Young [this message]
2016-07-13 15:44 ` Andrew Cooper
2016-07-15 9:38 ` Andrew Cooper
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