* T o n g mlist4suntong@yahoo.com [20081004 23:56]:
I found my aufs mount behaves not as expected.
According to the example from manpage, aufs mount behaves like this:
# mount -v -t aufs br:/day0:/base none /u none on /u type aufs (rw,xino=/day0/.aufs.xino,br:/day0=rw:/base=ro) # mount -v -o remount,\ prepend:/day1,\ xino=/day1/xino,\ mod:/day0=ro,\ del:/day0 \ /u none on /u type aufs (rw,xino=/day1/xino,br:/day1=rw:/base=ro)
But mine like this:
$ mount -v -t aufs -o br:/day0:/base none /u none on /u type aufs (rw,br:/day0:/base)
$ mount -v -o remount,prepend:/day1,mod:/day0=ro,del:/day0 /u none on /u type aufs (rw,br:/day0:/base,prepend:/day1,mod:/day0=ro,del:/ day0)
See, /day0 show up 3 times in mtab. But according to the manpage, it should be removed from aufs mount table.
Anybody knows why (and fix)?
Quoting the manpage of aufs:
,---- | If you dislike the difference between the aufs entries in /etc/mtab | and /proc/mounts, and if you are using mount(8) in util−linux | package, then try ./mount.aufs script. `----
So running:
# ln -s /usr/sbin/mount.aufs /sbin/mount.aufs
then produces:
# mount -v -t aufs -o br:/aufs/day0:/aufs/base none /aufs/u none on /aufs/u type aufs (rw,si=e1c098b6,xino=/aufs/day0/.aufs.xino,br:/aufs/day0=rw:/aufs/base=ro) # mount -v -o remount,prepend:/aufs/day1,mod:/aufs/day0=ro,del:/aufs/day0 /aufs/u none on /aufs/u type aufs (rw,si=e1c098b6,xino=/aufs/day0/.aufs.xino,br:/aufs/day1=rw:/aufs/base=ro)
I've sent a bugreport to the Debian BTS asking why aufs-tools installs the mount script in /usr/sbin - see #501184
regards, -mika-