diff options
| author |  Joey Hess <joey@kitenet.net> | 2011-11-28 15:26:27 -0400 |
|---|---|---|
| committer | Joey Hess <joey@kitenet.net> | 2011-11-28 16:17:55 -0400 |
| commit | 6869e6023e21698038da7e4a858cbaf6f7b7bbed (patch) | |
| tree | d6ae8aecbc2b8f65b36f3e0e1dba740d1308bb2e /doc/bugs/not_possible_to_have_annex_on_a_separate_filesystem.mdwn | |
| parent | ff2d9c828379ce29e5feb6ac770996be04ac072f (diff) | |
support .git/annex on a different disk than the rest of the repo
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.
Diffstat (limited to 'doc/bugs/not_possible_to_have_annex_on_a_separate_filesystem.mdwn')
| -rw-r--r-- | doc/bugs/not_possible_to_have_annex_on_a_separate_filesystem.mdwn | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/doc/bugs/not_possible_to_have_annex_on_a_separate_filesystem.mdwn b/doc/bugs/not_possible_to_have_annex_on_a_separate_filesystem.mdwn index e9a3ee95a..7daf03284 100644 --- a/doc/bugs/not_possible_to_have_annex_on_a_separate_filesystem.mdwn +++ b/doc/bugs/not_possible_to_have_annex_on_a_separate_filesystem.mdwn @@ -14,12 +14,19 @@ But when trying to add files i get: I have tried both using bind-mount and with a sym-link. -> I don't think this was a reversion; the forum post doesn't really -> indicate it ever worked. -> > Grepping for `renameFile` and `createLink` will find all the places > in git-annex that assume one filesystem. These would have to be changed > to catch errors and fall back to expensive copying. > > Putting a separate repository on the file server could work better > depending on what you're trying to do. --[[Joey]] + +>> I've added support for putting `.git/annex` on a separate filesystem +>> from the rest of the git repository. +>> +>> Putting individual subdirectories like `.git/annex/objects` on separate +>> filesystems from other subdirectories is not fully supported; it may +>> work but it may be slow and a few things (like `git annex migrate`) are +>> known to fail due to using hard links. I don't think this is worth +>> supporting. [[done]] +>> --[[Joey]] |