 | | | umount question | umount question 2005-03-30 - By Mike Wooding
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--- Marty Landman <MLandman@(protected)> wrote:
> How do I get this cd unmounted?
>
> -- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- -----
>
> [root@(protected) RPMS]# umount /mnt/cdrom
> umount: /mnt/cdrom: device is busy
> [root@(protected) RPMS]# /sbin/fuser -m /mnt/cdrom
> /mnt/cdrom: 19774c 19924c
> [root@(protected) RPMS]# umount /mnt/cdrom
> umount: /mnt/cdrom: device is busy
> [root@(protected) RPMS]# /sbin/fuser -k /mnt/cdrom/19774c
> /mnt/cdrom/19774c: No such file or directory
> [root@(protected) RPMS]# /sbin/fuser -k /mnt/cdrom/19924c
> /mnt/cdrom/19924c: No such file or directory
> [root@(protected) RPMS]# umount /mnt/cdrom
> umount: /mnt/cdrom: device is busy
If someone (sh?) has cwd set to somewhere in the /mnt/cdrom
fs, (e.g. cd /mnt/cdrom) that will make the mounted fs busy.
This can seomtimes be subtle to discover. E.g. if you have
a shell and do a cd /mnt/cdrom, the "su" so you can do rooty
stuff and then cd / and try and umount, the device will still
be busy, because the process you left when you su'd is still
cwd to /mnt/cdrom. Did I make that sufficiently confusing?
He who laughs last thinks slowest.
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