topic Re: bdf hanging in Operating System - HP-UX

bdf hanging

manaz — Wed, 17 Feb 2010 15:00:25 GMT

Dear Folks,
let me thanks for all the comments and help send to me previously.my question for today is.

a EVA storage disk by the storage team was released from a NFS before unmounting and exporting the file system. i guess the syntax that needed to be executed before releasing the disk as below was planned

1)lsof /xxx
2) umount the file system
umount /xxx
3)vgchange -a n /dev/yyy
4)vgexport -m filename -s -p -v yyy
5)pvremove /dev/rdsk/zzz
6) remove the entry from /etc/fstab
/dev/yyy/lvol1 /xxx vxfs delaylog,largefiles,nodatainlog 0 2
7) rmsf -H

so wat do i do to bring the system back to stability and bdf should execute instead of hanging from the filesystem, which was released from the disk? thanks in advance

Re: bdf hanging

Pete Randall — Wed, 17 Feb 2010 15:12:59 GMT

The only way I've ever gotten out of this was to reboot. Newer versions (11.31?) may have a force option to the umount command, though. You should check the man page for umount.

Pete

Re: bdf hanging

Johnson Punniyalingam — Wed, 17 Feb 2010 15:13:39 GMT

how about /etc/exports ??
have remove "entries" also from them >>????

if still "bdf" hangs

# mv /etc/mnttab /etc/mnttab
# mount -a

Re: bdf hanging

Dennis Handly — Wed, 17 Feb 2010 15:27:28 GMT

>Johnson: how about /etc/exports?

Yes, you would have to "exportfs -u" or unshare(1m) to stop exporting them. And remove them from that file.

>if still bdf hangs: # mv /etc/mnttab /etc/mnttab; mount -a

I doubt this will help since it needs to be unmounted.

Re: bdf hanging

manaz — Wed, 17 Feb 2010 18:34:14 GMT

none of the above helped guys, tried mv the etc/mnttab, commented the etc/export, but nope, still bdf hangs when reading the file system.

Re: bdf hanging

Pete Randall — Wed, 17 Feb 2010 18:55:35 GMT

>none of the above worked

????rebooting didn't work????

Pete

Re: bdf hanging

Kapil Jha — Thu, 18 Feb 2010 02:54:00 GMT

if you sure it did not work, tried to forcefully umount if it exist in /etc/mnttab by
umount -f or vxumount (doubt NFS would umount)

u can unshare and then clear the nfs locks..with
clear_locks server_name
clear_locks -s server_name

then run bdf.

Reboot would always work :)

BR,
Kapil+

Re: bdf hanging

manaz — Thu, 18 Feb 2010 03:09:38 GMT

Thanks folks, it worked after forced unmounting the file system and mounted all after moving the mnttab.

Re: bdf hanging

Kapil Jha — Thu, 18 Feb 2010 03:18:29 GMT

Its good to assign points to all who spare time to help you out :)

http://forums11.itrc.hp.com/service/forums/publicProfile.do?userId=WW362189&forumId=1

PS:I have assigned points to 0 of 7 responses to my questions.

BR,
Kapil+