Re: [PATCH] xend: open qemu-dm log files in append mode

[Yosuke Iwamatsu <y-iwamatsu@ab.jp.nec.com>]

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Ian Jackson wrote:
> It would be good if the maximum logfiles to keep would be
> configurable; making it part of the ordinary xend configuration would
> do.
> 
> Also, one minor stylistic point.  This idiom
>     if os.path.exists(self.logfile + ".%d" % nr_max_log_rotation):
> is rather unusual, although not actually wrong.  It combines string
> concatenation and %-formatting.  Surely one of
>     "%s.%d" % (self.logfile, nr_max_log_rotation)
>     self.logfile + '.' + `nr_max_log_rotation`
> would be better ?  (I would have used the former.)

Done in qemu-log-rotate-config.patch.
I've set the logrotate count default to 10. It is small enough not to
annoy users by filling xen log directory with many files, I think.

I also created a patch (qemu-log-append-config.patch) which opens
qemu-dm logfiles in append mode if the logrotate count is 0. If this
makes sense, please apply it after qemu-log-rotate-config.patch.

Thanks,
--Yosuke

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