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I'd previously used aufs2 in aufs-tools with some luck, but apparently this package has been "superseded" (this is strange term to use for a package which seems to have been removed only because it no longer compiles, but never mind).

Okay, so I thought I would try to use unionfs-fuse. I can't for the life of me figure out how to make it work for users though.

I'm using this command to make my unified mount:

unionfs-fuse /mnt/disk1-pool=RW:/mnt/disk3-pool=RW /mnt/union-pool

When I run this as root, I cannot access this share as joe user:

$ ls -al /mnt

ls: cannot access /mnt/union-pool: Permission denied
d??????????  ? ?    ?       ?                ? union-pool

When I run it as joe user, I cannot access this share as root. I basically get the exact same output as above. This is a little weird to me, root being root.

Both root (obviously) and joe user can access the /mnt/disk1-pool and /mnt/disk3-pool mounts.

If anybody has any info about aufs-tools for natty I'd also be interested. I am quite fond of this package because it worked.

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up vote 5 down vote accepted

I suppose (but not tried) that the fuse option -o allow_other, also shown in the example in the unionfs-fuse's man page, could be of help.


Try this

sudo mount -t aufs -o br:/mnt/disk1-pool=RW:/mnt/disk3-pool=RW \
    none /mnt/union-pool

that seems to work also without aufs-tools package.

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Bravo! Just out of curiousity how did you know that aufs is still available in Ubuntu 11.04? I was wondering how to get a list of supported filesystem types but could not figure out how to. Also Is there a man page on aufs I can bring up? – fostandy Aug 30 '11 at 1:14
To answer the first qn: cat /proc/filesystems – fostandy Aug 30 '11 at 4:02
I see the output of grep -i aufs /boot/config*, and remember livecd uses aufs, so did a little search and find a script here help.ubuntu.com/community/LiveCDCustomization (search for aufs). – enzotib Aug 30 '11 at 6:21

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