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[Kenneth Loafman <question248111@xxxxxxxxxxxxxxxxxxxxx>]

Question #248111 on Duplicity changed:
https://answers.launchpad.net/duplicity/+question/248111

    Status: Open => Answered

Kenneth Loafman proposed the following answer:
Mind running a verify on the final result from 4?  Post the logs if there
are any differences.


On Sat, May 10, 2014 at 3:41 AM, Rodrigo Alvarez <
question248111@xxxxxxxxxxxxxxxxxxxxx> wrote:

> Question #248111 on Duplicity changed:
> https://answers.launchpad.net/duplicity/+question/248111
>
>     Status: Answered => Open
>
> Rodrigo Alvarez is still having a problem:
> Dear Edso,
>
> I ran another test after updating to duplicity 0.23 and the issue
> persists.
>
> 1. I upgraded duplicity, cleaned all out cache and tmp directories and ran
> a backup.
> 2. Ran verify
> 3. Ran a 2nd backup pass
> 4. Ran a 3rd backup pass.
>
> On the 2nd backup pass, I still observed that about ~180 GB of data was
> re-added (as listed in the log and confirmed by looking at the volumes),
> even though the 1st pass (and now the verify) state that those files
> where there.  The 3rd pass behaved as expected and did not add any
> additional files or data.
>
> You had previously asked about which file system I'm running. I have
> ext4 on both source and destination.
>
> I've uploaded a new set of logs (~6MB) )to
> http://sira.duckdns.org/temp/duplicity_logs_photos_bakup_2014_05_08.tar.gz
>
> Poking into the code, I found that the comparison that triggers the
> 'delta add' is happening around line 172 of
> pyshared/duplicity/diffdir.py, but without much context, I'm worry to
> launch into a hacking spree.  I'd be happy to add any debug statements
> and rerun.
>
> Best,
>
> +R
>
> On May 7, 2014, at 2:47 AM, edso <question248111@xxxxxxxxxxxxxxxxxxxxx>
> wrote:
>
> > Your question #248111 on Duplicity changed:
> > https://answers.launchpad.net/duplicity/+question/248111
> >
> > edso proposed the following answer:
> > On 07.05.2014 11:21, edso wrote:
> >> Question #248111 on Duplicity changed:
> >> https://answers.launchpad.net/duplicity/+question/248111
> >>
> >> edso proposed the following answer:
> >> On 07.05.2014 11:06, Rodrigo Alvarez wrote:
> >>> Question #248111 on Duplicity changed:
> >>> https://answers.launchpad.net/duplicity/+question/248111
> >>>
> >>> Rodrigo Alvarez posted a new comment:
> >>> Hi Edso,  Thanks for the follow up.
> >>>
> >>> I looked at the commutative file size of all the duplicity-inc* volumes
> >>> from my second pass and `du -hs` reports 177GB;  Not what we'd expect
> >>> from rdiff/librsync rolling checksums.    I've upgraded to duplicity
> >>> 0.63, cleared all volumes, caches and temp files and launched a new
> >>> backup set.    I'll report back in a couple of days to see if this
> fixes
> >>> the "Comparing to None" issue.
> >>>
> >>
> >> hmm, usually the changed size is reflected in the incr bkp size. but in
> >> your case it also stated lot's of new files, so your finding seems
> >> consequential.
> >>
> >> TIP:
> >> do a verify between the runs! it'll inform you if it thinks there were
> changes.
> >>
> >
> > ok, just had another look at my duplicity stats. i confused
> ChangedFileSize with RawDeltaSize
> > it's pretty self explanatory, but i add some hints anyway
> > Delta's are modified existing block chunks. if there were only chunks
> added to a file you'll get no Delta's.
> >
> > --------------[ Backup Statistics ]--------------
> > StartTime 1399424418.52 (Wed May  7 03:00:18 2014)
> > EndTime 1399424651.44 (Wed May  7 03:04:11 2014)
> > ElapsedTime 232.92 (3 minutes 52.92 seconds)
> > SourceFiles 113455
> > SourceFileSize 4560812785 (4.25 GB)
> > NewFiles 281
> > NewFileSize 9192719 (8.77 MB)
> > DeletedFiles 8
> > ChangedFiles 81
> > ChangedFileSize 46077585 (43.9 MB)
> > ChangedDeltaSize 0 (0 bytes)
> > ^-- no changes in the changed files only additions
> > DeltaEntries 370
> > ^-- count of chunks changed in total
> > RawDeltaSize 9569326 (9.13 MB)
> > ^-- amount of bytes to backup in total
> > TotalDestinationSizeChange 6696412 (6.39 MB)
> > ^-- not sure why it's less here, compression?
> > Errors 7
> > ^-- i had some errors ;) there are some files inaccessible due to
> permissions in my backup which i don't care about
> > -------------------------------------------------
> >
> > ..ede/duply.net
> >
> > --
> > If this answers your question, please go to the following page to let us
> > know that it is solved:
> >
> https://answers.launchpad.net/duplicity/+question/248111/+confirm?answer_id=5
> >
> > If you still need help, you can reply to this email or go to the
> > following page to enter your feedback:
> > https://answers.launchpad.net/duplicity/+question/248111
> >
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>
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