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Re: [LUG] Forcibly unmount network filesystems

 

On Fri, 2006-12-22 at 14:15 +0000, Simon Williams wrote:
> Hello everyone.
> 
> Yesterday I mounted one of my server's samba shares on my laptop using 
> smb4k. Both run Linux if that makes any difference.
> 
> Later that evening I put my laptop to sleep (suspend-to-RAM). This 
> morning the power went out, bringing my server down with it. When I 
> later woke my laptop up, smb4k reported that the share had "gone 
> offline", which was to be expected. However, it refused to unmount or 
> remount the share. 'umount [share]' hangs, as does 'smbumount [share]'. 
> smbumount does not appear to have a 'force' option, and complains if 
> umount -f is used. lsof hangs for a while, before giving:
> 
> lsof: WARNING: can't stat() smbfs file system 
> /home/zaneta/smb4k/PROXIMA/family
>        Output information may be incomplete.
> 
> So how do I get rid of this stale mount?
> 
> I had a similar problem with NFS a while back.
> 
> This comes second on my list of major Linux usability problems- why oh 
> why oh why can't I tell it to just disconnect a network filesystem 
> without trying to contact the server about it?
> 
> Thanks
> Simon
> 

I have had to resort to 
umount -l /misbehaving/mountpoint
in the past when -f wouldn't do it.
man umount for details

Matt


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