Re: [Xen-devel] redirect qemu-dm log to syslog

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 08/02/13 11:42, Stefano Stabellini wrote:
> On Thu, 7 Feb 2013, Vasiliy Tolstov wrote:
>> I'm search mailing list and can't see any questions and answers...
>> Is that possible (and how) to redirect qemu-dm output (stored in
>> /var/log/xen/qemu-dm-xxx.log) to syslog and not write to file?
> Not easily, unless you find a way to capture QEMU's stdout and stderr
> and send it to syslog using an external tool. You can replace the QEMU
> binary with a script that spawns QEMU and a syslog logger to do this.
>
> You can also play nasty tricks with preprocessor macros and turn all
> QEMU's printf into syslog calls. Of course such a patch wouldn't be
> acceptable upstream.

This was attempted in XenServer, and is harder than just changing the
printf calls.  In the end we gave up and just wrapped stdout/stderr.

~Andrew

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