[Alex]

I excluded them in my backup script, but...

Wouldn't it be legitimate to have a look at 'mount', and ignore all paths reported as sshfs mounts (mine was indeed not readable, as it has been created with -o reconnect but the remote server alexub was not up during the backup)?

alexub: on /Users/alex/m/alexub (osxfusefs, nodev, nosuid, synchronous, mounted by alex)

In fact, wouldn't it be legitime to backup only what is really part of the specified partition, thus excluding everything mounted in it?