Re: [Duplicity-talk] SHA1 hash mismatch - need restore in any case, a bit urgent

[Kenneth Loafman]

Hi Igor,

Your plan sounds like it should work.  That is essentially what duplicity would do internally.

Later, after you get past this problem, please get back to us.  I'd like to try to understand how the truncated file got built, and why it got truncated.  What I need to know is:
-- how you performed the backup?
-- is the file:// URL a mounted filesystem?
-- if mounted, what type of mount?
-- what version of duplicity are you using?

Please hold on to the backups if possible.

...Thanks,
...Ken

On Fri, Apr 8, 2011 at 3:01 PM, Igor Balic <address@hidden> wrote:

Please confirm if this plan is OK:

- I extract all full volumes in dir one
- I extract all increment volumes in dir two
- I use rdiff with option to overwrite all changed files, with source one to two . This will overwrite all changed "chunks"
- I use a script that is yet to be written to convert multivol directories back into files and in correct dirs:
     - cat all chunks into file with name of dirname.tmp
     - move this file one dir up
     - remove dir
     - move file from dirname.tmp to dirname
     - after all are files assembled, move them to snapshot dir


But this will keep all files that got deleted from full to inc backup? Is deleted files list written somewhere?

Igor



-----Original Message-----
From: address@hidden [mailto:address@hidden] On Behalf Of Michael Terry

Sent: Friday, April 08, 2011 9:29 PM
To: Discussion of the backup program duplicity

Cc: Igor Balic
Subject: Re: [Duplicity-talk] SHA1 hash mismatch - need restore in any case, a bit urgent

So, if deleting your ~/.cache/duplicity like Clemens suggested didn't
work, I have written some instructions for how to recover files
manually from volumes.  It's not pretty, but maybe it would help if
you're desperate.  It also should let you get around the issue of the
first volume being bad (assuming that volume didn't hold the data you
cared about).

https://live.gnome.org/DejaDup/Help/Restore/WorstCase#Restoring_by_Hand

-mt

On 8 April 2011 15:18, Igor Balic <address@hidden> wrote:
> I have inspected files again, more carefully, volume 1 (of ~500) of full backup is corrupted (unexpected end of archive when gunzipping manually), it's 10MB long, but it should be 50MB. :(
> Is there any way to skip files in this volume and just proceed with others? It's all non-ecrypted.
>
> Igor
>
>
> -----Original Message-----
> From: duplicity-talk-bounces+igor=splet.eu@nongnu.org [mailto:duplicity-talk-bounces+igor=splet.eu@nongnu.org] On Behalf Of Clemens Eisserer
> Sent: Friday, April 08, 2011 9:04 PM
> To: Discussion of the backup program duplicity
> Subject: Re: [Duplicity-talk] SHA1 hash mismatch - need restore in any case, a bit urgent
>
> Hi igor,
>
> I saw the same error when I tried to restore a backup of mine.
> In my case I just deleted all cached metdata, and it suddenly worked.
>
> Although I am a bit unsure how much I can trust duplicity now :/
>
> Good luck, Clemens
>
> 2011/4/8 Igor Balic <address@hidden>:
>> Hi,
>>
>> sorry for urgency. We have a duplicity full backup and one increment.
>> Backups are not encrypted. Output is:
>>
>> duplicity restore --force  --no-encryption --file-to-restore /
>> file:///duplicity/___/home2    /root/res
>> Local and Remote metadata are synchronized, no sync needed.
>> Last full backup date: Tue Feb  8 19:39:53 2011
>> Invalid data - SHA1 hash mismatch:
>> Calculated hash: 3ca1ea655bdcc978ddb2711bed013e30bd880a03
>> Manifest hash: f46cab5c38e1ae506133c8f568e5773e0f5f7626
>>
>> I need a way to restore files, despite this error, --force doesn't help,
>> neither does using --file-to-restore, or without it.
>>
>> Backups went OK, without error, file sizes seem OK, no errors when backup
>> was made, both machines are 64 bit.
>> I just need to somehow override this error, modifying duplicity executable
>> is OK.
>>
>> I can pay for fast solution, since I really need it... No usable solution
>> found in archives.
>>
>> Igor
>>
>>
>> _______________________________________________
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