No encryption app (I encrypt the block device that NC uses) and no version-app at present. I do have the web logs though…
The last good backup of the file in question was on the evening of the Jan 1st, by the evening of the 2nd it was zero bytes.
So entries from web logs from the 1st and 2nd of Jan should cover it, I have the following:
(49 is my desktop, 34 is my laptop)
192.168.0.34 - me [02/Jan/2017:10:18:02 +0000] “GET /remote.php/webdav/Documents/Passwords/passwords.kdb HTTP/1.1” 200 123515 “-” "Mozilla/5.0 (Linux) mirall/2.2.4"
192.168.0.34 - me [02/Jan/2017:10:24:07 +0000] “PUT /remote.php/webdav/Documents/Passwords/passwords.kdb HTTP/1.1” 204 1117 “-” "Mozilla/5.0 (Linux) mirall/2.2.4"
192.168.0.49 - me [02/Jan/2017:10:24:24 +0000] “GET /remote.php/webdav/Documents/Passwords/passwords.kdb HTTP/1.1” 200 4734 “-” “Mozilla/5.0 (Linux) mirall/2.2.4”
I’ll put a script together which runs the following command each day and alerts me if there are any more 0 byte files:
find $dataDir/ -size 0
The only other thing worth mentioning is that I reinstalled the ownCloud client on the 2nd Jan between 10 and 11 am. I think I flipped between a couple of the Suse repos because I wasn’t sure which one to use. Settled on the following:
deb http://download.opensuse.org/repositories/isv:/ownCloud:/desktop/Ubuntu_14.04/ /
but did briefly use one that also had qt5 or something in the url