On Tue, May 13, 2008 at 06:50:47PM +1000, David Chinner wrote: > Same thing, but remounting the loop filesystem readonly > before unmounting: > > $ mount -t xfs /dev/sdb6 /mnt/scratch > $ mkdir /mnt/scratch/mnt > $ touch /mnt/scratch/img > $ mkfs.xfs -f -d file,name=/mnt/scratch/img,size=1g > $ mount -t xfs -o loop /mnt/scratch/img /mnt/scratch/mnt > $ mount -t xfs -o remount,ro /mnt/scratch/img /mnt/scratch/mnt > $ umount /mnt/scratch/mnt > $ umount /mnt/scratch > umount: /mnt/scratch: device is busy > umount: /mnt/scratch: device is busy This is a problem in mount, no the kernel. Before the remount the /etc mtab looks something like this: /qemu/test.img /mnt xfs rw,loop=/dev/loop0 0 0 and after it looks something like this: /qemu/test.img /mnt xfs ro 0 0 As a workaround do a losetup -d /dev/loop0 after unmounting the filesystem. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
