annex-ssh-options regression
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doc/bugs/annex-ssh-options_dropped_since_8.20200330.mdwn
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doc/bugs/annex-ssh-options_dropped_since_8.20200330.mdwn
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When debugging some ssh-related datalad tests that hang with newer
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git-annex versions, I noticed that there was a regression in the
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treatment of annex-ssh-options in c8fec6ab0 (Fix a minor bug that
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caused options provided with -c to be passed multiple times to git,
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2020-03-16).
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Here's a demo script. Pointing `SSHURL` to any ssh-accessible annex
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repo should do. In the case below, the target is an annex repo with
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one commit and no files in the working tree.
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[[!format sh """
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SSHURL="smaug:/home/kyle/scratch/repo"
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cd "$(mktemp -d ${TMPDIR:-/tmp}/gx-ssh-opts-XXXXXXX)"
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git clone "$SSHURL" ./ >/dev/null 2>&1
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git annex init \
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-c annex.sshcaching=false \
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-c remote.origin.annex-ssh-options="-o ControlMaster=auto -S CACHE" \
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--debug 2>&1 | grep 'read: ssh'
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"""]]
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With the parent of the above commit checked out (b166223d4), the
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script outputs
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```
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[2020-06-30 11:09:43.853918422] read: ssh ["smaug","-o","ControlMaster=auto","-S","CACHE","-n","-T","git-annex-shell 'configlist' '/home/kyle/scratch/repo' '--debug'"]
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```
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With c8fec6ab0 checked out, it outputs
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```
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[2020-06-30 11:11:03.833678263] read: ssh ["smaug","-S",".git/annex/ssh/smaug","-o","ControlMaster=auto","-o","ControlPersist=yes","-n","-T","git-annex-shell 'configlist' '/home/kyle/scratch/repo' '--debug'"]
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[2020-06-30 11:11:04.448046366] read: ssh ["-O","stop","-S","smaug","-o","ControlMaster=auto","-o","ControlPersist=yes","localhost"]
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```
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It looks like the options specified via
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`remote.origin.annex-ssh-options` are dropped, and git-annex switches
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to using its built-in ssh caching.
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A recent commit on master (95b8b4a5a) shows the same behavior.
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I've tried to work through the config-related handling and understand
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why the condition from c8fec6ab0 results in the ssh options being
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dropped, but I haven't made any progress yet.
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[[!meta author=kyle]]
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[[!tag projects/datalad]]
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