6869e6023e
The only fully supported thing is to have the main repository on one disk, and .git/annex on another. Only commands that move data in/out of the annex will need to copy it across devices. There is only partial support for putting arbitrary subdirectories of .git/annex on different devices. For one thing, but this can require more copies to be done. For example, when .git/annex/tmp is on one device, and .git/annex/journal on another, every journal write involves a call to mv(1). Also, there are a few places that make hard links between various subdirectories of .git/annex with createLink, that are not handled. In the common case without cross-device, the new moveFile is actually faster than renameFile, avoiding an unncessary stat to check that a file (not a directory) is being moved. Of course if a cross-device move is needed, it is as slow as mv(1) of the data. |
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