autofs4 /net /proc/mounts problem
From: Mitch Sako
Date: Mon Sep 13 2004 - 11:27:31 EST
I?m seeing the following situation occur with 2.4.23 up through 2.4.27 and
autofs 4.1.3 using /net access with a generic /etc/auto.net. I tried
'nonstrict' and 'nosymlink' in /etc/auto.net but that resulted in the
mounts not working.
NFS Server foo has virtual nested exports:
/ on /dev/sda1
/bar on /dev/sdb1 (for example)
cd /net/foo/bar mounts both / and /bar which it finds from ?showmount ?e?
df shows foo:/ and foo:/bar mounted
/proc/mounts shows both, also.
I?m guessing what?s happening next is autofs4 tries to umount foo:/ before
foo:/bar which yields a busy condition for foo:/, even though it?s not
because foo:/bar is mounted above foo:/ on the client.
/proc/mounts starts filling up with foo:/bar entries at this point and
fills up the mount table.
If I bring down the automount process, manually go through and umount all
of the foo:/bar entries in /proc/mounts, clean up anything in /etc/mtab and
then restart the automounter, everything seems to be OK. Obviously, this
is not acceptable.
Any ideas?
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