[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Duplicity-talk] Verify is not working as expected, for me
From: |
David Williams |
Subject: |
Re: [Duplicity-talk] Verify is not working as expected, for me |
Date: |
Sat, 10 Jun 2017 09:22:55 -0400 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.1.1 |
On 06/10/2017 05:45 AM, Kenneth Loafman wrote:
Hi David,
You are correct, verify by itself only verifies that the current
backup can be recovered. With --data-compare, it will also compare
the backup's data against that on the file system. This is to save
time since the compare operation is expensive.
...Thanks,
...Ken
OK, thanks. Pretty confusing since the current behavior, in 7.12, is
contrary to examples [1] I've seen.
In addition to the behavior of "rsync" [2] which " ... finds files that
need to be transferred using a "quick check" algorithm (by default) that
looks for files that have changed in size or in last-modified time."
I was going to open a bug to improve the man page docs for 'verify' but
then saw a lot had already been opened and apparently resolved (or, in
progress?). Such as bug 1354880 [3]. I will point out, though, that the
"man page" changes mentioned in that bug 1354880 do not seem to be in
version 7.12, unless I have the wrong man pages installed, somehow. I
did install the Ubuntu 16.04 "distribution version" first, which is
quite old, at the 7.06 level and did try to 'purge' the old version
before installing the new 7.12 version, but, you know, I might have made
some mistake and I have not checked the source repository.
Thank you so much for clarifying!
[1] https://help.ubuntu.com/community/DuplicityBackupHowto#Verify
[2] http://manpages.ubuntu.com/manpages/trusty/man1/rsync.1.html
[3] https://bugs.launchpad.net/duplicity/+bug/1354880