Umount CIFS

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1

hi guys

I have to umount a CIFS from a Windows machine...but it's been imposible

there is one special task

/sbin/umount.cifs /mondobackup

that task cannot be kill...so I cannot umount the unit

any idea how to kill this and umount this CIFS share?

by the way I've tried

umount -l
umount -f

same thing now I have these other commands holding the mount

ps aux | grep [m]ondo
root      5254  0.0  0.0   1420   292 ?        D    12:15   0:00 /sbin/umount.cifs /mondobackup
root      7593  0.0  0.0   1564   476 ?        D    13:18   0:00 fuser -cu /mondobackup
root      7724  0.0  0.0   1564   472 ?        D    13:18   0:00 fuser -ck /mondobackup
root      7882  0.0  0.0   1424   300 ?        D    13:20   0:00 /sbin/umount.cifs /mondobackup -f
root      8029  0.0  0.0   1424   300 pts/20   D    13:21   0:00 /sbin/umount.cifs /mondobackup -l

thanks a lot

2

See what's at the bottom of dmesg | less

3

something like this

CIFS VFS: No writable handles for inode
 CIFS VFS: No writable handles for inode
 CIFS VFS: No writable handles for inode
 CIFS VFS: No writable handles for inode
 CIFS VFS: No writable handles for inode
 CIFS VFS: No writable handles for inode
 CIFS VFS: No writable handles for inode
 CIFS VFS: No writable handles for inode
4

Try to track down and kill any processes still using the share. That may allow it to finish unmounting.

If not, you may have to reboot. You'll never kill a lazy unmount. IMHO -l amounts to a denial-of-service bug: Open files will hold it open, but new ones can't be opened, causing a situation where there's no service and you can't force it to complete.

5

Found this too

CIFS VFS: cifs_mount failed w/return code = -6
 CIFS VFS: cifs_mount failed w/return code = -6
 CIFS VFS: Error 0xfffffffa on cifs_get_inode_info in lookup of \io.sys
 CIFS VFS: Error 0xfffffffa on cifs_get_inode_info in lookup of \msdos.sys

so my server will have to be rebooted.... :wall:

6

Those don't look that bad, but don't look relevant either.