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Is there any userspace nfs programs still running? I replaced our last
nfs share last year, so this is all sorta fuzzy
What about remounting the share ("-o remount")?
[EMAIL PROTECTED] wrote:
> Turns out AIX does not have the same umount -l option.
>
> lsof and fuser do not return anything useful.
> sudo lsof /unix_data
> lsof: WARNING: can't stat() unknown file system /unix_data
> Output information may be incomplete.
> assuming "dev=0x80000027" from mount table
>
>
> There's a small win for linux.
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> Behalf Of Magnuson, Sig
> Sent: Friday, October 14, 2005 9:40 AM
> To: [email protected]
> Subject: Re: [clug-talk] forcing umount on nfs filesystem [solved]
>
>
> It figures, I have been playing with this on and off for a couple of days
> now. Decide to engage the group and then discover the following works on
> linux clients. Gonna try AIX now.
>
> sudo umount -lf /unix_data
>
> -l Lazy unmount. Detach the filesystem from the filesystem hierar-
> chy now, and cleanup all references to the filesystem as soon as
> it is not busy anymore. (Requires kernel 2.4.11 or later.)
>
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> Behalf Of Magnuson, Sig
> Sent: Friday, October 14, 2005 9:31 AM
> To: [email protected]
> Subject: [clug-talk] forcing umount on nfs filesystem
>
>
> we have a linux nfs server serving linux and AIX clients.
>
> When our linux nfs server recently went down we were left with stale NFS file
> handles on some of the hosts. We have been unable to umount/remove the stale
> mount. rebooting is not a option at this time.
>
> Any suggestions on how to remove this stale mount.
>
> IE:
>
> cat /etc/redhat-release
> Red Hat Enterprise Linux AS release 3 (Taroon Update 4)
>
> sudo umount /unix_data
> umount: /unix_data: device is busy
>
> sudo umount -f /unix_data
> umount2: Device or resource busy
> umount: /unix_data: device is busy
>
> sudo umount -vf /unix_data
> umount2: Device or resource busy
> umount: /unix_data: device is busy
>
> df -h
> Filesystem Size Used Avail Use% Mounted on
> ...
> ...
> calnfs01.corporate.net:/nfs_unix_data
> - - - - /unix_data
>
> sudo lsof /unix_data
> lsof: WARNING: can't stat() nfs file system /unix_data
> Output information may be incomplete.
> lsof: status error on /unix_data: Stale NFS file handle
> lsof 4.63
> latest revision: ftp://vic.cc.purdue.edu/pub/tools/unix/lsof/
> latest FAQ: ftp://vic.cc.purdue.edu/pub/tools/unix/lsof/FAQ
> latest man page: ftp://vic.cc.purdue.edu/pub/tools/unix/lsof/lsof_man
> usage: [-?abhlnNoOPRstUvV] [-c c] [+|-d s] [+D D] [+|-f]
> [-F [f]] [-g [s]] [-i [i]] [+|-L [l]] [+|-M] [-o [o]] [-p s]
> [+|-r [t]] [-S [t]] [-T [t]] [-u s] [+|-w] [--] [names]
> Use the ``-h'' option to get more help information.
>
> sudo fuser /unix_data
> /unix_data: Stale NFS file handle
>
> sudo fuser -k /unix_data
> /unix_data: Stale NFS file handle
>
> attempts to remount over top of the stale mount result in dual entries
> sudo mount /unix_data
> df -h
> Filesystem Size Used Avail Use% Mounted on
> ...
> ...
> calnfs01.corporate.net:/nfs_unix_data
> 100G 74M 100G 1% /unix_data
> calnfs01.corporate.net:/nfs_unix_data
> 100G 74M 100G 1% /unix_data
>
> sudo umount -f /unix_data
> df -k
> Filesystem 1K-blocks Used Available Use% Mounted on
> ...
> ...
> calnfs01.corporate.net:/nfs_unix_data
> - - - - /unix_data
>
> sudo umount -f /unix_data
> umount2: Device or resource busy
> umount: /unix_data: device is busy
>
>
> Anyone tried this suggestion?
> http://lists.debian.org/debian-isp/2003/04/msg00234.html
>
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