Messages in this thread | | | Date | Sat, 13 Mar 2010 09:56:25 +0100 | Subject | sys_umount() returns EBUSY when doing: sh -c "mount /dev/sdc1 /mnt; umount /mnt" | From | Francis Moreau <> |
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Hello
I've some shell scripts which try to find out the filesystem hosted by a block device.
They basically do this:
mount /dev/sdc1 /mnt fs=$(stat -f -c %T $mount_point) umount /mnt
It happens to work but since an unknown upgrade (kernel, libs or tools upgrade), umount(8) returns -EBUSY.
I found that it's actually the sys_umount() which return -EBUSY.
So the question, is this expected or is this a regression ?
If it's expected then which operation should I add between the mount(8) and umount(8) to make the mount operation completely finish (inside the kernel) so the next umount won't return -EBUSY ?
Oh I'm currently using the kernel shipped with F12: 2.6.32.9-67.fc12.x86_64
Thanks -- Francis
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