home backup files vanish

[alcina]

Ok, I finally have some time to look again at this! I've left the rm -f "$FILE" line in xbian-storager hashed out and it's been backing up fine despite the exit code of 1 from the pipe.

To try to find out what program in the pipe is exiting with 1, as xbian-storager is a bash script, I utilised $PIPESTATUS to grab the exit code of each program in the pipe. Slightly complicated as the pipe isn't simply a linear command but I think I have it right (please correct if I am wrong!):

Code:

( btrfs send -v "${tmp_dir}/home/@ro" | pv -i 20 -n -s $(du -sxb ${tmp_dir}/home/@ro | awk '{printf "%d", $1*1.08}' && echo "Inner-Inner: ${PIPESTATUS[0]} ${PIPESTATUS[1]}" >> /root/pipestatus) | $packcmd -1 >> "$FILE" && echo "Outer-Inner: ${PIPESTATUS[0]} ${PIPESTATUS[1]} ${PIPESTATUS[2]}" >> /root/pipestatus) 2>&1 | cpb
echo "Outer: ${PIPESTATUS[0]} ${PIPESTATUS[1]}" >> /root/pipestatus

After running "backup now" from the GUI the contents of /root/pipestatus are:

Code:

Inner-Inner: 0 0
Outer-Inner: 0 0 0
Outer: 0 1

So I think the error is coming from cpb, i.e the second exit code in the pipe as a whole. But I don't know why. /tmp/xbiancopy.log contains lots of stuff relating to successful btrfs and ends "Operation sucessfully completed!". /tmp/backuphome.log contains the lines starting with positive digits from the output of pv in the pipe as the grep implies.