Re: HACMP: umount fails and fuser finds nothing

1: when you run cd /usr/es/sbin/cluster/cllsserv ;this
will show what the cluster knows about.
2: Do you use an rc.shutdown script to restart you
systems
3: If ther are entries in the /etc/inittab that the
cluster controls it may fail to shutdown due to not
able to completely exit 0.
4: Have you ran an snap -r ; snap -e at the time of
the error, and sent it to the ibm hacmp engineers.
5: when Looking through you hacmp.out file and greping
for exit 1

--- Christopher Baker <cbaker@xxxxxxxxxxxx> wrote:

Folks,

Has anyone had this problem. We have two servers
(LPARS) on two different
P570's that are the two systems in a HACMP cluster.
We cannot
successfully fail over or gracefully stop HACMP
because the system is
unable to umount one or more local filesystems. In
the hacmp.out file we
see that the umount gets a "Device busy". It then
does a

fuser -k -u -x /dev/nfs1lv11

That returns nothing

/dev/nfs1lv11:

It then tries to umount the filesystem "/s" that is
on LV /dev/nfs1lv11.
This continues forever.

At the command line, an lsof and a "fuser -d
/dev/nfs1lv11" come back
blank.

INFO: These are NFS servers and the filesystems we
have trouble with are
exported to many IBM workstations as well as non-IBM
systems and SAMBA
shared.
We un-export all filesystems and stop the SAMBA
processes before HACMP
tries to umount them.


We have a similar, but much less frequent problem on
other (non-NFS
server) clusters where a zombied process will not
"kill -9" and it is
using a local or NFS mounted filesystem. If we need
to fail that over or
just stop HACMP so we can reboot, we have to do a
"shutdown".

Any assistance would be of help.


Christopher M. Baker
Senior Technical Support Analyst
HPCE - Linux Cluster Development and Support
Goodyear Tire and Rubber Company
330.796.1725

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