I am seeing some instability using hierarchical mount points in automount maps.
The version of autofs is autofs-4.1.3-168 on RHEL 3 update 7. The
workstations are dual opteron running x86_64 version of RHEL. The maps are
local to the workstation, and follow the format:
foobar1/a server1:/local/foobar1/a
foobar1/b server1:/local/foobar1/b
foobar2/c server1:/local/foobar2/c
foobar3/d server1:/local/foobar3/d
foobar4/f server1:/local/foobar4/f
foobar4/g server1:/local/foobar4/
The map name is auto.foobars, the entry in the auto.master is:
/foobars /etc/auto.foobars --ghost
After a reboot, the directory structure is fine. After a cd to /foobars, an ls
will list all directories foobar1 through foobar4. The subdirectories will be
correct below foobar*. After a time period, I believe the timeout set in
/etc/sysconfig/autofs, the mount points become confused. Instead of the
subdirectories a and b listed below /foobars/foobar1, the directories will be
listed below /foobars/foobar1/foobar1. This can happen to any/all of the
foobar* directories.
I have tried various formats of the automount map. I have tried to escape the
slash in the directory structure on the left hand side, i.e. foobar1\/a, I have
tried something like this for auto.foobar:
foobar1 \
/a server1:/local/foobar1/a \
/b server1:/local/foobar1/b
foobar2 \
/c server1:/local/foobar2/c
foobar3 \
/d server1:/local/foobar3/d
foobar4 \
/f server1:/local/foobar4/f \
/g server1:/local/foobar4/g
With all three tries, initially the mounts are correct, after a time the mounts
become confused.
Without the --ghost, none of the subdirectories of foobar* are visible or even
accessible.
Are hierachical mounts supported? I was a little surprised this worked at all.
The automount maps I am used to dealing with came from Solaris and never used
subdirectories on the left side.
Wayne Murata
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