Back In Time

Is it possible to use BIT without sshfs as sftp connections to my server are chrooted

Asked by Luke

I'm trying to set up a backup job from my Ubuntu 14.04 PC to a Synology NAS running (linux based) DSM 5.0.
Synology NASes chroot sftp connections to the root of the /volume1 directory, so the paths visible from an ssh/rsync connection differ from the sshfs/sftp paths (i.e /volume1/MyBackupDir via ssh/rsync becomes /MyBackup dir when mounted via sshfs).

I selected full rync mode thinking that might not require an sshfs mount, but got the following error message:

"Can't mount sshfs -p 22 -o ServerAliveInterval=240 -o idmap=user user@server:/volume1/MyBackupDir /home/user/.local/share/backintime/mnt/4720F256/mountpoint"

I can work around the issue by installing a different sftp-server via optware (www.nslu2-linux.org/wiki/Optware) and configuring sshd_config, but that is not optimal as the NAS reverts the sshd_config on every firmware update and I have to remember to reconfigure it or my backups fail.

Is it possible to use BIT without sshfs? Alternatively, is it possible to specify different rsync and sshfs paths?

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Germar
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Best Germar (germar) said : 		#1

@quentin-decembry wrote a very good wiki on how to use Synology DSM 5 with BackInTime. Take a look at
http://wiki.qedinux.be/index.php?title=BackInTime_to_Synology_DSM_5

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Luke (tiliqua-au) said : 		#2

Thanks, didn't think of a bind mount. Setting up the bind mount in /etc/rc.local survived a firmware upgrade as well.