Hi Andreas, Andreas Krey wrote: > I observed (again) an annoying behavior of 'git repack': Do you have context for this 'again'? E.g. was this discussed previously on-list? > When the new pack file cannot be fully written because > the disk gets full beforehand, the tmp_pack file isn't > deleted, meaning the disk stays full: > > $ df -h .; git repack -ad; df -h .; ls -lart .git/objects/pack/tmp*; rm .git/objects/pack/tmp*; df -h . > Filesystem Size Used Avail Use% Mounted on > /dev/mapper/vg02-localworkspaces 250G 245G 5.1G 98% /workspaces/calvin > Counting objects: 4715349, done. > Delta compression using up to 8 threads. > Compressing objects: 100% (978051/978051), done. > fatal: sha1 file '.git/objects/pack/tmp_pack_xB7DMt' write error: No space left on device > Filesystem Size Used Avail Use% Mounted on > /dev/mapper/vg02-localworkspaces 250G 250G 20K 100% /workspaces/calvin > -r--r--r-- 1 andrkrey users 5438435328 Oct 11 17:03 .git/objects/pack/tmp_pack_xB7DMt > rm: remove write-protected regular file '.git/objects/pack/tmp_pack_xB7DMt'? y > Filesystem Size Used Avail Use% Mounted on > /dev/mapper/vg02-localworkspaces 250G 245G 5.1G 98% /workspaces/calvin > > git version 2.15.0.rc0 I can imagine this behavior of retaining tmp_pack being useful for debugging in some circumstances, but I agree with you that it is certainly not a good default. Chasing this down, I find: pack-write.c::create_tmp_packfile chooses the filename builtin/pack-objects.c::write_pack_file writes to it and the .bitmap, calling pack-write.c::finish_tmp_packfile to rename it into place Nothing tries to install an atexit handler to do anything special to it on exit. The natural thing, I'd expect, would be for pack-write to use the tempfile API (see tempfile.h) to create and finish the file. That way, we'd get such atexit handlers for free. If we want a way to keep temp files for debugging on abnormal exit, we could set that up separately as a generic feature of the tempfile API (e.g. an envvar GIT_KEEP_TEMPFILES_ON_FAILURE), making that an orthogonal topic. Does using create_tempfile there seem like a good path forward to you? Would you be interested in working on it (either writing a patch with such a fix or a test in t/ to make sure it keeps working)? Thanks, Jonathan
