force unmount

[manu_9]

Can you forcibly unmount a fs in HP-UC 11i or 11.23.like umount -f on solaris and aix.

[Mark Grant]

No, there isn't a force option on hpux.

[Rajesh D L]

Hi Manu,

U can try fuser -ck /fs;umount /fs
for unmounting forcefully.

regards,
RDL.

[Naveej.K.A]

hi manu,

I don't think we can forcibly unmount a filesystem.

man fuser for entry -k says send sigkill signal to each process using each file..

but fuser -k filesystem
and then umount filesystem was still not working...

with best wishes
Naveej

[Robert-Jan Goossens]

Hi,

If I'm not mistaken only sol 8 + 9 have the umount -f option, HPUX does not have this option yet (maybe in the future :-) ).

Regards,
Robert-Jan

[Mark Grant]

Just to remind everybody, Linux also has the force option :)

[KapilRaj]

Manu,

If ur scenarion is as follows ,

Somebody switched-off NFS server and umount commands are hanginng...

I have a work awround ...

Bringup NFS Server's IP address on the local node as an alias and try umount !

Kaps

[SAHA]

No force umount in HPUX till now.

Thanks,

[Alzhy]

Yes there is a force umount - if you've installed VxFS 3.5. I have not tried it though on NFS mounts...

[iminus]

You can't force unmount. What you can do is to issue a fuser command on the filesystem to see if any user is using it. And do a ps -ef|grep to see if any other processes are running, also, check if the mount point contains another mount point in it's path. If you are trying to umount some system mount points like /etc or /usr, you need to do it in single user mode

[manu_9]

Thanks , I guess HP shud provide that option to help Admins do a better job.

[Brian Hackley]

Hello Manu,

HP knows about this issue. We have a White Paper that discusses the issue, and yes it does cover some of the workarounds that were suggest in replies to your postings. The URL is http://docs.hp.com/hpux/onlinedocs/3929/ForciblyUnmountingNFSFilesystems.pdf

Also, please assign points to the replies given to you in the forums based on their usefulness to your issue. Thank you in advance.

Hope that helps,
-> Brian Hackley