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report gcrypt bug

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spwhitton 2015-05-23 02:46:13 +00:00 • committed by admin
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doc/bugs/gcrypt_gives_false___34__remote_ID_has_changed__34___warning_after_a_sync_fails_because_network_is_down.mdwn Normal file
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### What steps will reproduce the problem?
1. Create a fresh annex repo. Create a dummy test file and add it to the annex.
2. `git init --bare` in an empty directory on a remote machine.
3. `git initremote testremote type=gcrypt encryption=hybrid gitrepo=ssh://machine/the/remote/machine/dir keyid=my_key_id`
4. `git annex sync testremote --content`
5. Unplug network/switch off WiFi.
6. `git annex sync testremote --content`, which fails due to the broken network.
7. Reconnect network, check that can ssh to remote host.
8. `git annex sync testremote --content`
gcrypt issues warning `gcrypt: WARNING: Remote ID has changed!`
### What version of git-annex are you using? On what operating system?
git-annex 5.20141125 on Debian Wheezy 32-bit.
### Please provide any additional information below.
This is essentially a gcrypt bug, so I don't know if you want to fix it, and I know that the gcrypt author is inactive.
My diagnosis is that when running `git annex sync testremote --content` when the network is disconnected, git can't SSH to the remote and gcrypt makes the mistake of regenerating the remote ID and setting up a new remote. So when the network comes back online, the local record of the remote's gcrypt ID is just wrong. gcrypt ought not to "set up a new repository" when there is a network failure.
gcrypt: Development version -- Repository format MAY CHANGE
gcrypt: Repository not found: ssh://url-here
gcrypt: Setting up new repository
gcrypt: Remote ID is :id:agVyn7wBG/JGwN9LW5Qn
Counting objects: 22, done.
Compressing objects: 100% (17/17), done.
Total 22 (delta 4), reused 0 (delta 0)
gcrypt: Encrypting to: -r my_key_id_here
gcrypt: Requesting manifest signature
ssh: Could not resolve hostname my_remote_host_here: No such file or directory
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
error: failed to push some refs to 'gcrypt::ssh://url-here
Pushing to testremote failed.
(non-fast-forward problems can be solved by setting receive.denyNonFastforwards to false in the remote's git config)
failed