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Joey Hess 2024-08-12 10:01:48 -04:00
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doc/todo/track_free_space_in_repos_via_git-annex_branch.mdwn
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@ -92,4 +92,17 @@ merge time. Those are less expensive than diffing the location logs only
because the logs they diff are less often used, and the work is only because the logs they diff are less often used, and the work is only
done when relevant commands are run. done when relevant commands are run.
## concurrency
Suppose a repository is almost full. Two concurrent threads or processes
are considering sending two different keys to the repository. It can hold
either key, but not both. So the size tracking seems to need to be
provisionally updated for one key before it is sent, and then the check for
the other key will show not enough space and it won't be sent. If the first
key fails to get sent, the size needs to be reset back.
Note that checkDiskSpace deals with this by looking at
sizeOfDownloadsInProgress. It would be possible to make a
`sizeOfUploadsInProgressToRemote r` similarly.
[[!tag projects/openneuro]] [[!tag projects/openneuro]]