diff options
Diffstat (limited to 'doc/bugs/case_sensitivity_on_FAT.mdwn')
| -rw-r--r-- | doc/bugs/case_sensitivity_on_FAT.mdwn | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/doc/bugs/case_sensitivity_on_FAT.mdwn b/doc/bugs/case_sensitivity_on_FAT.mdwn deleted file mode 100644 index 682acc71d..000000000 --- a/doc/bugs/case_sensitivity_on_FAT.mdwn +++ /dev/null @@ -1,49 +0,0 @@ -I was copying files to a directory remote with `git annex copy`. Out of 114 files, 9 of them failed with no message, just: - - copy data/foo.dat (to usbdrive...) failed - copy data/bar.dat (to usbdrive...) failed - -According to strace: - - 31338 mkdir("/media/annex/Zp/9v/SHA256-s1362999320--d650297c8cf8c2dc0575110a52d0c5cc0ff266f294a0599f85796a6b44b23492", 0777) = -1 ENOENT (No such file or directory) - 31338 mkdir("/media/annex/Zp/9v", 0777) = -1 ENOENT (No such file or directory) - 31338 mkdir("/media/annex/Zp", 0777) = -1 EEXIST (File exists) - 31338 stat("/media/annex/Zp", 0x7f8449f170d0) = -1 ENOENT (No such file or directory) - -The filesystem is FAT32 and has weird case semantics. This was mounted by udisks with its default options: - - /dev/sdb1 on /media/annex type vfat (rw,nosuid,nodev,uhelper=udisks,uid=1000,gid=1000,shortname=mixed,dmask=0077,utf8=1,showexec) - -I wonder if the directory remote should use hashDirLower instead of hashDirMixed? - -> git-annex intentionally uses the same layout for directory and rsync -> special remotes as it does for the .git/annex directory. As far -> as I know it works ok on (truely) case-insensative filesystems. -> -> Based on your strace, if you `ls /media/annex/Zp`, you will see -> "No such file or directory", but if you `mkdir /media/annex/Zp` it will -> fail with "File exists". Doesn't make much sense to me. -> -> The (default) VFAT mount option shortname=mixed causes this behavior. -> With shortname=lower it works ok. --[[Joey]] -> ->> So, the options for fixing this bug seem to be to fix Linux (which would ->> be a good idea IMHO but I don't really want to go there), or generally ->> convert git-annex to using lowercase for its hashing (which would be a ->> large amount of pain to rewrite all the symlinks in every git repo), ->> or some special hack around this problem. ->> ->> I've put in a workaround for the problem in the directory special ->> remote; it will use mixed case but fall-back to lowercase as necessary. ->> ->> That does leave the case of a bare git repository with annexed content ->> stored on VFAT. More special casing could fix it, but that is, I ->> think, an unusual configuration. Leaving the bug open for that case, ->> and for the even more unlikely configuration of a rsync special remote ->> stored on VFAT. --[[Joey]] - ->>> Bare repositories now use lowercase. rsync is the only remaining ->>> unsupported possibility. --[[Joey]] ->>>> Everything now uses lowercase, with the exception of non-bare ->>>> repos, which cannot be on FAT anyway due to using symlinks. [[done]] ->>>> --[[Joey]] |