Dear all,
I have been using unionFS on a FreeBSD NAS until I switched
to Debian Squeeze (2.6.32-5-amd64) and thus changed to
auFS.
My aim is to merge three directories into one which can be
shared by samba and, if possible, AFP:
/media/ca5ce62f-c833-405f-b084-d7a851f0582d/aufs (rw)
/media/1a319890-bf3e-4d97-93d2-436d301c48a3/media (ro)
/media/1a319890-bf3e-4d97-93d2-436d301c48a3/music (ro)
/media/ca5ce62f-c833-405f-b084-d7a851f0582d/mediashare
(used as share)
Under Debian I installed auFS as follows:
apt-get install aufs-tools
And mounted the filesystem as root with the following command:
mount -t aufs -o
br=/media/ca5ce62f-c833-405f-b084-d7a851f0582d/aufs:/media/1a319890-bf3e-4d97-93d2-436d301c48a3/music:/media/1a319890-bf3e-4d97-93d2-436d301c48a3/media
none /media/ca5ce62f-c833-405f-b084-d7a851f0582d/mediashare
When I check the mounted filesystems with df everything
seems ok (ie it could be mounted):
Dateisystem 1K-Blöcke Benutzt Verfügbar Ben%
Eingehängt auf
/dev/sdd1 7334612 805924 6156108 12% /
tmpfs 1025608 0 1025608 0%
/lib/init/rw
udev 1019256 132 1019124 1% /dev
tmpfs 1025608 0 1025608 0%
/dev/shm
tmpfs 1025608 0 1025608 0% /tmp
/dev/md127 961433496 654587636 258007792 72%
/media/ca5ce62f-c833-405f-b084-d7a851f0582d
/dev/sdb1 1922859824 1763794500 61389652
97% /media/1a319890-bf3e-4d97-93d2-436d301c48a3
none 961433496 654587636 258007792 72%
/media/ca5ce62f-c833-405f-b084-d7a851f0582d/mediashare
I can access the directory mediashare as root without
problems, but when I want
to access it with another user I get the following error:
ls mediashare/
ls: Öffnen von Verzeichnis mediashare/ nicht möglich:
Keine Berechtigung // ls: Cannot open directory mediashare/
not possible: No premissions
When I check the permissions of the directory the following
is shown,
before mounting auFS:
getfacl mediashare/
# file: mediashare/
# owner: root
# group: root
user::rwx
user:U:r-x
user:W:rwx
user:V:r-x
user:Z:r-x
user:Y:r-x
user:X:r-x
user:nobody:---
group::rwx
group:XY:r-x
mask::rwx
other::rwx
default:user::rwx
default:user:U:r-x
default:user:W:rwx
default:user:Z:r-x
default:user:Y:r-x
default:user:X:r-x
default:user:V:r-x
default:user:nobody:---
default:group::rwx
default:group:XY:r-x
default:mask::rwx
default:other::rwx
after mounting auFS:
getfacl mediashare/
# file: mediashare/
# owner: root
# group: root
user::rwx
group::rwx
other::---
It is apparent that auFS overrides my ACL permissions. Is
this a bug or is ACL not supported in auFS?
I hope you can shed some light on, and, maybe, provide a
solution to this problem, since it is keeping me from
sharing my data..
Many thanks for your support.
Regards
Michael
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