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Re: [Qemu-devel] [PATCH 3/5] linux-user: do not avoid dumping of qemu it


From: Riku Voipio
Subject: Re: [Qemu-devel] [PATCH 3/5] linux-user: do not avoid dumping of qemu itself
Date: Tue, 30 Jun 2009 20:01:45 +0300
User-agent: Mutt/1.5.18 (2008-05-17)

On Tue, Jun 30, 2009 at 03:52:12PM +0100, Paul Brook wrote:
> On Tuesday 30 June 2009, address@hidden wrote:
> > From: Riku Voipio <address@hidden>
> >
> > Previously we disabled dumping of qemu itself if we already
> > created coredump of the target process. This broke the abort01
> > LTP test and any application that used WCOREDUMP to find out
> > the child process dumped core. Remove this feature.

> Isn't this going to overwrite the guest core dump we just wrote?

No, since we make the guest dump as qemu_binary_date-time_pid.core,
while host core will be core or whatever is /proc/sys/kernel/core_pattern.
However, if we replace our adhoc naming with reading core_pattern, we
would indeed get overwritten.

> It sounds like WCOREDUMP is one of those things that just isn't going to work.
> i.e. we have to just accept the limitation and xfail the test.

If this how people feel, I'll be glad to drop this patch.

Riku




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