I cannot umount file system, show Device busy

[anek Kumpawa]

I cannot umount file system, show error as below.
umount: cannot unmount /dev/vgbea/lvol1 : Device busy
umount: return error 1.

[Vidhya B]

Hi,

It might help you. Check it.

http://h30499.www3.hp.com/t5/LVM-and-VxVM/quot-umount-cannot-unmount-Device-busy-quot-whereas-it-doesn-t/m-p/3273298#M20450

[anek Kumpawa]

Thank you so much guy, now i can do it by>>
#fuser -cu /{file system}
/XXXX: 18658o(root) 18716o(root)
#ps -ef|grep 18658
#kill -9 18658
#kill -9 18716
#umount /XXXX

[Manix]

Also make sure you are not sitting on the file system you are trying to umount -)

Thanks
Manix

[Ismail Azad]

Hi anek,

The fuser -ck option also will help. Also one aspect of troublshooting as far as unmounting filesystems is concerned is if you have secondary swap on the L.V in the sense that it is "filesystem swap"... a portion of swap space that is borrowed from the filesystem.... You will not be able to easily unmount this filesystem... so that's a point that might help u as far as getting out of the troubleshooting loop in the process of just unmounting a filesystem... Welcome to ITRC... Do assign points if you find answers helpful...

Regards
Ismail Azad