ecryptfs and storebackup

[Alexander Klauer]

On 29 May 2012 14:49, Alexander Klauer <alexander.klauer at googlemail.com> wrote:
> I'm using Ubuntu 12.04 with an ecryptfs-encrypted home directory. I'd
> like to periodically backup my homedir to an untrusted location. To
> this end, I use storebackup to backup my encrypted homedir
> /home/.ecryptfs/klauer to /var/local/backup and periodically rsync
> /var/local/backup to the untrusted backup server.
>
> For the recovery test, I did (as root)
>
> ecryptfs-recover-private /var/local/backup/default/2012.05.16_00.00.02/.Private/
>
> mounting and decrypting my homedir to a location in the /tmp
> directory. ecryptfs-recover-private says everything was successful,
> however, while the mounted homedir contains  the correct directory
> structure, file names, directory time stamps, etc., the file data
> themselves are missing. For example, a ls -l in the mounted homedir
> yields
>
> ls: cannot access examples.desktop: No such file or directory
> ls: cannot access mbox: No such file or directory
> total 60
> drwxr-xr-x  2 klauer klauer  4096 May 15 14:31 Desktop
> drwxr-xr-x  5 klauer klauer  4096 May 15 21:06 Documents
> drwxr-xr-x  2 klauer klauer  4096 May 15 12:38 Downloads
> -?????????  ? ?      ?          ?            ? examples.desktop
> -?????????  ? ?      ?          ?            ? mbox
> drwxr-xr-x  2 klauer klauer  4096 Apr 23 15:56 Music
> drwxr-xr-x  2 klauer klauer  4096 Apr 23 15:56 Pictures
> drwxr-xr-x  2 klauer klauer  4096 Apr 23 15:56 Public
> drwxr-xr-x  2 klauer klauer  4096 Apr 23 15:56 Templates
> drwxr-xr-x  2 klauer klauer  4096 Apr 23 15:56 Videos
>
> The relevant line of the mount output looks like:
>
> /var/local/backup/default/2012.05.16_00.00.02/.Private on
> /tmp/ecryptfs.xxxxxxxx type ecryptfs
> (ro,ecryptfs_sig=yyyyyyyyyyyyyyyyyyy,ecryptfs_fnek_sig=zzzzzzzzzzzzzz,ecryptfs_cipher=aes,ecryptfs_key_bytes=16)
>
> An strace of ls -l shows that getdents() returns the entry of, say,
> examples.desktop, but lstat() fails with ENOENT.
>
> What am I missing?

Anyone? Or should I file a bug report?

Alexander