Re: cvs update hangs 'amd' in tstile when 'firefox' is running

[christos%astron.com@localhost (Christos Zoulas)]

In article <Pine.NEB.4.64.1602111958530.1432%david.technoskunk.fur@localhost>,
John D. Baker <jdbaker%mylinuxisp.com@localhost> wrote:
>On Fri, 12 Feb 2016 01:19:59 +0000 (UTC), christos%astron.com@localhost (Christos
>Zoulas) wrote:
>
>> So the problem is when nfs unmounts.  You should be able to reproduce
>> it
>
>>   mount foo:/foo /foo
>>   cd /foo
>>   umount /foo
>
>> And now umount is stuck and never returns EBUSY. Is that true?
>
>On the machine in question, already stuck via 'amd', yes, attempts
>to unmount an arbitrary "hard"-mounted NFS file system hangs.
>
>On another client which is not stuck, the above sequence does indeed
>produce:
>
>  $ cd /x
>  $ sudo umount /x
>  umount: /x: Device busy
>
>and continues to operate normally.  I tried this during a cvs update.
>A couple of times there was an slight delay, but it eventually reported
>"Device busy" each time.

Ok, do a cvs update (which is what triggers it), wait a bit and then
do the unmount.

christos