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тАО11-06-2008 03:16 AM
тАО11-06-2008 03:16 AM
Service Guard : The package can't unmount File system
Currently we are implementing SAP Service Guard for SCM (ABAP + JAVA) and then LiveCashe
The package for the SCM starts fine, but the Livecashe can't start for different raison
The first one is due to a XUSER (A call is open with SAP support) , but due to this the startup of package fails and then stop (normal)
But the problem is that the file systems can not be unmounted.
Apparently the ressource is busy
Any idea to bypass this situation and unmount the FS in any case.
Note :
The system is a RedHad Linux
We use hanfs files
Cheers
Yacine
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тАО11-06-2008 04:02 PM
тАО11-06-2008 04:02 PM
Re: Service Guard : The package can't unmount File system
What OS and version of serviceguard. Does the serviceguard script fail on startup and what error message are you getting when it tries to umount the filesystem.
If there is a fuser patch that is what is usually executed to kill any processes on a filesystem and umount it.
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тАО11-06-2008 05:50 PM
тАО11-06-2008 05:50 PM
Re: Service Guard : The package can't unmount File system
# FILESYSTEM UNMOUNT COUNT
# Specify the number of unmount attempts for each filesystem during package
# shutdown. The default is set to 1.
FS_UMOUNT_COUNT=1
Change the number to 3 or 4
If the FS is busy, then an fuser command will be performed to release it.
If this do not fix your problem, probably you will have to review you SGeSAP configuration, ctrun and nfs.
Regards
A.
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тАО11-07-2008 12:00 AM
тАО11-07-2008 12:00 AM
Re: Service Guard : The package can't unmount File system
Yes the parameter FS_UMOUNT_COUNT was already set to 3.
I thinks it's more a configuration issue.
Indeed we have 2 packages which using NFS FS.
And we we stop one of them , the nfs deamon is stopped.
I don't know if an NFS package can solve this.
Cheers
Yacine
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тАО11-07-2008 03:59 AM
тАО11-07-2008 03:59 AM
Re: Service Guard : The package can't unmount File system
If you are using SGeSAP you must use NFS toolkit and automounter to manage NFS.
A.
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тАО11-07-2008 05:06 AM
тАО11-07-2008 05:06 AM
Re: Service Guard : The package can't unmount File system
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тАО11-07-2008 06:19 AM
тАО11-07-2008 06:19 AM
Re: Service Guard : The package can't unmount File system
I run into this problem sporadically on HPUX MCSG clusters running sap. It appears SAP doesn't always shut down cleanly.
Manually, you can run fuser on the mount point to find out what processes are holding that filesystem open, then kill those processes.
On *very* rare occasions, I haven't been able to kill a process because it's waiting on I/O. I think that's happened twice in over three years. Normally, the process dies pretty quickly, after which, you can unmount the filesystem, vgchange -a n the volume group and failover/restart as you desire.
The automatic portion of this is supposed to happen in MCSG already as part of the fuser command sequence when it's unmounting filesystems. For me, this issue happens rarely enough that I haven't bothered tracking it down; I just unmount the filesystems manually and am done with it.
HTH;
Doug O'Leary
------
Senior UNIX Admin
O'Leary Computers Inc
linkedin: http://www.linkedin.com/dkoleary
Resume: http://www.olearycomputers.com/resume.html
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тАО11-08-2008 05:30 AM
тАО11-08-2008 05:30 AM
Re: Service Guard : The package can't unmount File system
Thanks,
Johnson