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Re: kern/45305: umount says device busy without any process having current directory in the mount or file open
On Mon, Aug 29, 2011 at 10:25:02AM +0000, matthew green wrote:
> what does "fstat" say in this case? it should report any thing that
> is showing an open filesystem. also, for the killed everything case,
> what processes are running?
fstat: the only listed stuff is related to / and no other mount point
Running processes: init, one login, one /bin/sh (fresh root login).
If I only have those processes running, I would assume that I'm able
to unmount everything except /?
> also, what about "mount -a"? fstat doesn't report nullfs mounts that
> keep a filesystem busy.
As I required to use the corresponding computer, I need to make it
behave like this again. I'll try mount -a and then report, but don't
understand currently why that should give some insight. The problem
mounts are listed as noauto mounts in fstab and thus I assume mount -a
should do anything about them.
The last time, the nfs-mount got stuck. The two null-mounts were
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