On Mon, Mar 15, 2010 at 10:04:46AM -0600, Andreas Dilger wrote: > On 2010-03-13, at 13:30, Francis Moreau wrote: > >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 > > Mounting an in-use filesystem is a bad idea. Huh? mount() will happily create another vfsmount refering to the same superblock in that case. It *is* OK to mount the same block device twice; any fs that uses get_sb_bdev() will DTRT. It should be safe. The lack of error checking after mount, OTOH, is not. -- 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
