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detach -a with a busy filesystem

daemon@ATHENA.MIT.EDU (daemon@ATHENA.MIT.EDU)
Thu Jul 20 23:59:11 1989

Date: Thu, 20 Jul 89 23:58:49 -0400
From: Jonathan I. Kamens <jik@ATHENA.MIT.EDU>
To: testers@ATHENA.MIT.EDU
Cc: tytso@ATHENA.MIT.EDU

I had bldgw20-rtusr-60r attached as /mnt on achates.  I was cd'd into
a directory on that filesystem, so it was busy.  I did "detach -a" and
it told me that it could not detach the filesystem because it was
busy.

I cd'd into my homedir and tried "detach -a" again, and it did
nothing.  Turns out that the first detach, even though it didn't work,
removed my UID from the list of people with interest in the filesystem
in /usr/tmp/attachtab?

Is this expected behavior?  If so, I don't think it should be.... if
the detach fails, the UID should not be removed from the list of
interested users.

jik

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