git-annex/doc/todo/stop_using_createDirectoryIfMissing_True.mdwn

28 lines
1.5 KiB
Markdown

`createDirectoryIfMissing True` creates any missing parent directories.
So if the git repository directory goes away suddenly, git-annex can create
a new empty directory in its place and start putting files in there.
* I've seen this happen when a removable drive that's a remote is unmounted
and git-annex is running and stores a file on the remote. Since
git-annex's cwd is not on the remote and it may not have any files open
when it's unmounted, the unmount proceeds. When the mount point is
/media/username/drive, the automounter may delete the mount point, and
git-annex then recreates it and may write files to it, which is the wrong
location. This can also cause problems with later mounting of the drive;
some automounters fail if the mount point pre-exists.
* A move of a directory to another path can also lead to git-annex writing
to the old path and re-creating the directory. While it mostly uses
relative paths to cwd, and so is fine, there may be cases where it needs
to use an absolute path.
* Odd behavior has been reported if the repository is deleted while
git-annex is running it it. Including a git-annex seeming to hang or
spin. <https://github.com/datalad/datalad/issues/3613>
The sooner git-annex gives up in
such a situation, the less likely it is do get into an unusual state.
What's needed is an action that creates directories only up to a given
point, which can be either .git/annex or the top of the worktree depending
on what's being done. --[[Joey]]