[Buildd-tools-devel] Bug#489116: Bug#489116: Bug#489116: schroot: possible race condition during chroot setup?

[Roger Leigh]

On Fri, Jul 11, 2008 at 03:15:34PM +0200, Lucas Nussbaum wrote:
> On 04/07/08 at 00:07 +0200, Lucas Nussbaum wrote:
> > I'm using file chroots.
> 
> It seems that this is caused by mount failing to lock /etc/mtab (because
> another build process is already mounting an FS). mount
> returns 16 in that case according to mount(8). I think that it would
> make sense to retry mounting once or twice in that case.
> 
> This occured 6 times during my full archive rebuild today.

That's annoying!  Ideally, mount(8) should wait on the lock for a bit
rather than failing immediately.

We can certainly implement this in schroot-mount using itimers, and do
some sort of loop in do_mount in the 10mount script.


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