[Gluster-users] Problems with eCryptfs using a Gluster backend.

Lance Reed reed.r.lance at gmail.com
Wed Feb 26 15:11:38 UTC 2014

I forgot to include the versions of the code I am using:

Thanks in advance for any ideas on the subject.

On Tue, Feb 25, 2014 at 6:15 PM, Lance Reed <reed.r.lance at gmail.com> wrote:

> I am attempting to setup encrypted user home directories via eCryptfs
> using gluster as a backend.
> Very simple setup currently has a small two node gluster cluster mounted
> by a separate client.  Normal gluster client and NFS mount / file options
> are working fine.
> e.g.
> https://wiki.archlinux.org/index.php/ECryptfs#Encrypting_a_home_directory
> In my attempts lay ecryptfs on top of the mounted native gluster setup, I
> am unable to edit a file, write etc.  I either get zero length or fixed
> sizes.
> Only log messages I get are:
> "Either the lower file is not in a valid eCryptfs format, or the key could
> not be retrieved. Plaintext passthrough mode is not enabled; returning -EIO"
> I am posting in this forum to see if anyone knows of any reason why this
> may be failing from the Glusterfs side.
> I am trying Centos / RHEL.
> See these bugs:
> Bug 762976 - (GLUSTER-1244) ecryptfs does not work when the directory to
> be encrypted is on gluster mount
> https://bugzilla.redhat.com/show_bug.cgi?id=762976
> A non-empty file created on glusterfs with ecryptfs reports as a file of
> size zero
> https://bugzilla.redhat.com/show_bug.cgi?id=989702#c1
> These look to be issues with O_DIRECT usage in fuse.
> I was hoping someone might have an idea or remember some of this to help
> me figure out if using glusterfs for a backend with  eCryptfs is even an
> option.
> Is it possible that this bug is still the core problem?
> "ecryptfs does not work properly over nfs, cifs, samba, WebDAV, or aufs"
> https://bugs.launchpad.net/ecryptfs/+bug/277578
> It is old but still seems to be open..
> Thanks very much in advance for any ideas on the problem.
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