Richard B. Johnson wrote:
> On Fri, 18 Oct 2002, Carl-Daniel Hailfinger wrote:
> [SNIPPED,,,]
>
>>To put it another way: Is there any chance to umount / cleanly if / is local
>>and /smbserver is a mounted remote SMB filesystem where the network link to
>>the SMB server just went down? (Without waiting half an hour for a timeout.)
>>
> You don't need to unmount a network drive (or any drive)
> from a mount-point on a file-system before you umount that
> file-system!
>
> In other words, if I have quark:/tmp mounted on /tmp, I can
> umount / without unmounting quark:/tmp.
>
> [SNIPPED]
Does not work here.
# mount /dev/fd0 /floppy/
# mount /dev/hda1 /floppy/test/
# umount /floppy/
umount: /media/floppy: device is busy
# touch /floppy/foo
umount -f /floppy/
umount2: Device or resource busy
umount: /dev/fd0: not mounted
umount: /media/floppy: Illegal seek
# touch /floppy/foo2
# mount
/dev/fd0 on /floppy type vfat (rw,sync)
/dev/hda1 on /floppy/test type vfat (rw)
In other words, your suggested method does not work here. (Kernel 2.4.18,
util-linux-2.11n)
# mount -o remount,ro /floppy/
/dev/fd0 on /floppy type vfat (ro,sync)
/dev/hda1 on /floppy/test type vfat (rw)
This, however, seems to work.
Regards,
Carl-Daniel
On 18 October 2002 20:25, Carl-Daniel Hailfinger wrote:
> Richard B. Johnson wrote:
> > In other words, if I have quark:/tmp mounted on /tmp, I can
> > umount / without unmounting quark:/tmp.
You can remount ro. I doubt you can umount.
> >
> > [SNIPPED]
>
> Does not work here.
>
> # mount /dev/fd0 /floppy/
> # mount /dev/hda1 /floppy/test/
> # umount /floppy/
> umount: /media/floppy: device is busy
> # touch /floppy/foo
> umount -f /floppy/
> umount2: Device or resource busy
> umount: /dev/fd0: not mounted
> umount: /media/floppy: Illegal seek
> # touch /floppy/foo2
> # mount
> /dev/fd0 on /floppy type vfat (rw,sync)
> /dev/hda1 on /floppy/test type vfat (rw)
>
> In other words, your suggested method does not work here. (Kernel
> 2.4.18, util-linux-2.11n)
>
> # mount -o remount,ro /floppy/
> /dev/fd0 on /floppy type vfat (ro,sync)
> /dev/hda1 on /floppy/test type vfat (rw)
>
> This, however, seems to work.
umount / is special: in fact it does remount ro.
So you two do the same thing.
--
vda