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Re: [Duplicity-talk] Restarting failed backups with 1.2.x


From: Jakob Bohm
Subject: Re: [Duplicity-talk] Restarting failed backups with 1.2.x
Date: Fri, 22 Sep 2023 06:02:35 +0200
User-agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:6.2) Goanna/20230604 Epyrus/2.0.2

The full backup was the result of requesting an incremental backup when the latest full was over the age limit.

The restart was the same (requested incremental, got full).

On 2023-09-21 18:15, Scott Hannahs via Duplicity-talk wrote:
I think that it should be able to restart a full backup.  It has for me in the past.  However you switched from a full backup to an incremental backup which confused the system of trying to do an incremental on an incomplete (ie corrupted) full backup.

Just my $0.02 worth.

-Scott

On Sep 21, 2023, at 8:55 AM, Jakob Bohm via Duplicity-talk <duplicity-talk@nongnu.org> wrote:

Hi list,

[Note that I am still using duplicity 1.2.1-patched]

Having disabled the supposedly buggy --asynchronous-upload option, I reran full backup of my largest disk (3TiB used, 7TiB capacity), which reported in progress messages that it would run for about 2 weeks over a 100Mbps uplink to AWS S3).  However about a week into the backup, a router crash interrupted the connection for 15 to 30 minutes, this caused duplicity to abort with errors about the upload failing 5 times, but no final message like "duplicity exited due to errors".

So confirming that no duplicity process was running (by using the ps command), I restarted the backup in incremental mode, and contrary to past mailing list messages from back in the 0.x era, the backup did not resume where it left off but started over from scratch, with a new 2 week runtime to wait for.

Questions:

- Is resuming after a failed backup a duplicity feature or not?

- Are there specific prerequisites or instructions for resuming a failed backup?

- Do any of the command line arguments need to have special values to resume a failed backup?

- Where is the Changelog for 1.2.2 and later?

- Where is the Changelog for transitioning from 1.2.x to 2.1.x?

- How long should we wait for all the 1.x to 2.0 kinks to be worked out, industry experience says that too little time has passed since the 2.0 beta was released?


Enjoy

Jakob
-- 
Jakob Bohm, CIO, Partner, WiseMo A/S.  https://www.wisemo.com
Transformervej 29, 2860 Søborg, Denmark.  Direct +45 31 13 16 10
This public discussion message is non-binding and may contain errors.
WiseMo - Remote Service Management for PCs, Phones and Embedded


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Enjoy

Jakob
-- 
Jakob Bohm, CIO, Partner, WiseMo A/S.  https://www.wisemo.com
Transformervej 29, 2860 Søborg, Denmark.  Direct +45 31 13 16 10
This public discussion message is non-binding and may contain errors.
WiseMo - Remote Service Management for PCs, Phones and Embedded

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