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| -rw-r--r-- | doc/bugs/ssh_connection_caching_broken_on_NTFS.mdwn | 63 |
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diff --git a/doc/bugs/ssh_connection_caching_broken_on_NTFS.mdwn b/doc/bugs/ssh_connection_caching_broken_on_NTFS.mdwn new file mode 100644 index 000000000..bfb221163 --- /dev/null +++ b/doc/bugs/ssh_connection_caching_broken_on_NTFS.mdwn @@ -0,0 +1,63 @@ +TL;DNR ssh connection caching seems to cause git-annex to not work on NTFS volumes. Setting `annex.sshcaching` to `false` seems to solve the problem. + +## What version of git-annex are you using? On what operating system? Please provide any additional information below. + +* git-annex version: 3.20120629 on Debian Testing. +* `the-repo` is located on an NTFS volume on a USB HDD. +* `the-remote` is on the server `example.com`. +* `example.com` is running gitolite3 v3.2-19-gb9bbb78, git 1.7.2.5, and git-annex 3.20120629~bpo60+2 + + +## What steps will reproduce the problem? What is the expected output? What do you see instead? + +Create or clone a repo onto an NTFS volume. +Make sure `git annex` is initialized. +Run some regular git operations. These always seem to work. +Try git-annex operations. + +Some operations work despite the error messages: + + $ git annex sync + Control socket connect(/media/NTFSVOL/the-repo/.git/annex/ssh/git@example.com): Connection refused + Failed to connect to new control master + Command ssh ["-S","/media/NTFSVOL/the-repo/.git/annex/ssh/git@example.com","-o","ControlMaster=auto","-o","ControlPersist=yes","git@example.com","git-annex-shell 'configlist' '/~/the-repo.git'"] failed; exit code 255 + Control socket connect(/media/NTFSVOL/the-repo/.git/annex/ssh/git@example.com): Connection refused + Failed to connect to new control master + Command ssh ["-S","/media/NTFSVOL/the-repo/.git/annex/ssh/git@example.com","-o","ControlMaster=auto","-o","ControlPersist=yes","git@example.com","git-annex-shell 'configlist' '/~/the-repo'"] failed; exit code 255 + commit + # On branch master + nothing to commit (working directory clean) + ok + pull the-remote + ok + pull origin + ok + +Other operations fail: + + $ git annex copy -t the-remote the-file.jpg + Control socket connect(/media/NTFSVOL/the-repo/.git/annex/ssh/git@example.com): Connection refused + Failed to connect to new control master + Command ssh ["-S","/media/NTFSVOL/the-repo/.git/annex/ssh/git@example.com","-o","ControlMaster=auto","-o","ControlPersist=yes","git@example.com","git-annex-shell 'configlist' '/~/the-repo.git'"] failed; exit code 255 + Control socket connect(/media/NTFSVOL/the-repo/.git/annex/ssh/git@example.com): Connection refused + Failed to connect to new control master + Command ssh ["-S","/media/NTFSVOL/the-repo/.git/annex/ssh/git@example.com","-o","ControlMaster=auto","-o","ControlPersist=yes","git@example.com","git-annex-shell 'configlist' '/~/the-repo'"] failed; exit code 255 + copy the-file.jpg (checking the-remote...) Control socket connect(/media/NTFSVOL/the-repo/.git/annex/ssh/git@example.com): Connection refused + Failed to connect to new control master + (unable to check the-remote) failed + git-annex: copy: 1 failed + +Some googling revealed the errors to be stale socket files. +- [Three SSH Tips](http://shallowsky.com/blog/tags/ssh/) +- [Improving SSH (OpenSSH) connection speed with shared connections](http://protempore.net/~calvins/howto/ssh-connection-sharing/#section-03) + +It appears that SSH connection caching was implemented in response to this wishlist item: +[wishlist: Prevent repeated password prompts for one command](http://git-annex.branchable.com/todo/wishlist:_Prevent_repeated_password_prompts_for_one_command/) + +However ssh connection caching breaks things on NTFS volumes. If I turn off connection caching, it seems to work fine + + $ git config annex.sshcaching false + +but it would be nifty if git-annex could detect the filesystem type and do The Right Thing. + +Thanks for all the work on git-annex -- it's an awesome project! |