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On 2013-03-18T00:41:46+00:00 Michael wrote:

Created attachment 711658
test script

Description of problem:

It's very easy to accidentally corrupt the backup copy of a file when
resuming an interrupted backup.

Specifically, there are several ways to end up backing up corrupted
data:

A) If resuming after a volume that ended in a one-block file, we would skip the 
first block of the next file.
B) If resuming after a volume that ended in a multi-block file, we would skip 
the first block of the next file.
C) If resuming a non-encrypted backup after a volume that spanned a multi-block 
file, we would skip some data inside the file.

These are all very similar but have slightly different code fixes.
Together they amount to "if you resume a backup, it's very likely you
will have corrupted data somewhere". The only situation that doesn't is
resuming in the middle of a file while using encryption.

(This is upstream bug https://bugs.launchpad.net/duplicity/+bug/1091269
)

Version-Release number of selected component (if applicable):

This is fixed in upstream 0.6.21.  It is present in probably any version
of duplicity >= 0.6.0.

How reproducible:

Reliably.

Steps to Reproduce:

1. Download the script 'auto-ctrl-c-test.sh' from this bug
2. sudo /bin/bash ./auto-ctrl-c-test.sh -s

Actual results:

There will be several lines at the end of the output explaining the
difference between the original files and the restored ones.

Expected results:

It should end with "***** Diff between /lib and /tmp/restore" and no
lines following.

Reply at: https://bugs.launchpad.net/duplicity/+bug/1091269/comments/24

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On 2013-03-18T00:48:44+00:00 Michael wrote:

Created attachment 711659
Patch against 0.6.20

Here's a patch against 0.6.20 for F18.

Reply at: https://bugs.launchpad.net/duplicity/+bug/1091269/comments/25

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On 2013-03-18T00:52:33+00:00 Michael wrote:

Created attachment 711660
Patch against 0.6.18

Here's a patch against 0.6.18 for F17.

Reply at: https://bugs.launchpad.net/duplicity/+bug/1091269/comments/26

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On 2013-03-19T01:03:59+00:00 Rahul wrote:

I have reviewed the upstream changelog and I think it is just better to
push the latest upstream release to all active branches instead of
cherry picking fixes.  I am going to attempt to do that now.

@robert,  holler if you have a problem with that!

Reply at: https://bugs.launchpad.net/duplicity/+bug/1091269/comments/27

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On 2013-03-19T01:32:13+00:00 Fedora wrote:

duplicity-0.6.21-1.fc18 has been submitted as an update for Fedora 18.
https://admin.fedoraproject.org/updates/duplicity-0.6.21-1.fc18

Reply at: https://bugs.launchpad.net/duplicity/+bug/1091269/comments/28

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On 2013-03-19T01:34:46+00:00 Fedora wrote:

duplicity-0.6.21-1.fc17 has been submitted as an update for Fedora 17.
https://admin.fedoraproject.org/updates/duplicity-0.6.21-1.fc17

Reply at: https://bugs.launchpad.net/duplicity/+bug/1091269/comments/29

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On 2013-03-19T03:19:37+00:00 Fedora wrote:

duplicity-0.6.21-1.el6 has been submitted as an update for Fedora EPEL 6.
https://admin.fedoraproject.org/updates/duplicity-0.6.21-1.el6

Reply at: https://bugs.launchpad.net/duplicity/+bug/1091269/comments/30

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On 2013-03-19T03:29:42+00:00 Fedora wrote:

duplicity-0.6.21-1.el5 has been submitted as an update for Fedora EPEL 5.
https://admin.fedoraproject.org/updates/duplicity-0.6.21-1.el5

Reply at: https://bugs.launchpad.net/duplicity/+bug/1091269/comments/31

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On 2013-03-19T21:26:58+00:00 Fedora wrote:

Package duplicity-0.6.21-1.el6:
* should fix your issue,
* was pushed to the Fedora EPEL 6 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=epel-testing duplicity-0.6.21-1.el6'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-EPEL-2013-0709/duplicity-0.6.21-1.el6
then log in and leave karma (feedback).

Reply at: https://bugs.launchpad.net/duplicity/+bug/1091269/comments/32

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On 2013-04-01T22:23:53+00:00 Fedora wrote:

duplicity-0.6.21-1.fc17 has been pushed to the Fedora 17 stable
repository.  If problems still persist, please make note of it in this
bug report.

Reply at: https://bugs.launchpad.net/duplicity/+bug/1091269/comments/33

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On 2013-04-01T22:35:13+00:00 Fedora wrote:

duplicity-0.6.21-1.fc18 has been pushed to the Fedora 18 stable
repository.  If problems still persist, please make note of it in this
bug report.

Reply at: https://bugs.launchpad.net/duplicity/+bug/1091269/comments/34

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On 2013-05-02T19:51:33+00:00 Fedora wrote:

duplicity-0.6.21-1.el6 has been pushed to the Fedora EPEL 6 stable
repository.  If problems still persist, please make note of it in this
bug report.

Reply at: https://bugs.launchpad.net/duplicity/+bug/1091269/comments/35

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On 2013-05-02T19:53:19+00:00 Fedora wrote:

duplicity-0.6.21-1.el5 has been pushed to the Fedora EPEL 5 stable
repository.  If problems still persist, please make note of it in this
bug report.

Reply at: https://bugs.launchpad.net/duplicity/+bug/1091269/comments/36


** Changed in: duplicity (Fedora)
       Status: Unknown => Fix Released

** Changed in: duplicity (Fedora)
   Importance: Unknown => Undecided

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https://bugs.launchpad.net/bugs/1091269

Title:
  Data corruption when resuming

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