Hello,
I've just started using rdiff-backup. I've had a few difficulties, but
nothing major. I thought I would make a few comments about these.
I've being trying to set up remote unattended backups using Dean Gaudet's
writeup, including use of LVM snapshots. This seems to work Ok for the
most part. However, I did some stress testing by having rdiff-backup do
backups of big changes at 5 min intervals.
This predictably means that (since the previous job has not completed) at
some point two different instances of rdiff-backup will be running and
trying to write to the same directory. Perhaps problems were to be
expected and in fact rdiff-backup produced errors and appeared to lose
data.
I managed to work around this by having the script check whether the LVM
snapshot were mounted first, since this would mean the previous backups
were still in progress. However, I wonder whether it would not be possible
for rdiff-backup to detect that another rdiff-backup process was writing
to the same directory and exit gracefully? Perhaps this would be difficult
to do in a portable way.
Secondly, I noticed that the --remove-older-than option removes files in
the increments directory, but does not touch any of the log and statistics
files that are generated, eg session_statistics, error_log,
mirror_metadata etc.
Would it not be reasonable for this command to remove all these files for
the relevant dates as well? If not, what is the recommended way to remove
these files?
Thirdly, when using --remove-older-than, if there are no increments that
need to be removed, I see a message, apparently on standard error, saying
something like
"No increments older than Tue Nov 22 11:46:48 2005 found, exiting."
Isn't this somewhat unnecessary? This seems hardly to merit a message at
all, let alone one on standard error.
Thanks for reading. I look forward to hearing back. Please cc me on any
reply. Thanks.
Faheem.
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