GIT-REPACK(1)GIT-REPACK(1)NAMEgit-repack - Pack unpacked objects in a repository
SYNOPSIS
git repack [-a] [-A] [-d] [-f] [-F] [-l] [-n] [-q] [--window=<n>]
[--depth=<n>]
DESCRIPTION
This script is used to combine all objects that do not currently reside
in a "pack", into a pack. It can also be used to re-organize existing
packs into a single, more efficient pack.
A pack is a collection of objects, individually compressed, with delta
compression applied, stored in a single file, with an associated index
file.
Packs are used to reduce the load on mirror systems, backup engines,
disk storage, etc.
OPTIONS-a Instead of incrementally packing the unpacked objects, pack
everything referenced into a single pack. Especially useful when
packing a repository that is used for private development. Use
with -d. This will clean up the objects that git prune leaves
behind, but git fsck --full shows as dangling.
Note that users fetching over dumb protocols will have to fetch
the whole new pack in order to get any contained object, no mat-
ter how many other objects in that pack they already have
locally.
-A Same as -a, unless -d is used. Then any unreachable objects in a
previous pack become loose, unpacked objects, instead of being
left in the old pack. Unreachable objects are never intention-
ally added to a pack, even when repacking. This option prevents
unreachable objects from being immediately deleted by way of
being left in the old pack and then removed. Instead, the loose
unreachable objects will be pruned according to normal expiry
rules with the next git gc invocation. See git-gc(1).
-d After packing, if the newly created packs make some existing
packs redundant, remove the redundant packs. Also run git
prune-packed to remove redundant loose object files.
-l Pass the --local option to git pack-objects. See
git-pack-objects(1).
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GIT-REPACK(1)GIT-REPACK(1)-f Pass the --no-reuse-delta option to git-pack-objects, see
git-pack-objects(1).
-F Pass the --no-reuse-object option to git-pack-objects, see
git-pack-objects(1).
-q Pass the -q option to git pack-objects. See git-pack-objects(1).
-n Do not update the server information with git
update-server-info. This option skips updating local catalog
files needed to publish this repository (or a direct copy of it)
over HTTP or FTP. See git-update-server-info(1).
--window=<n>, --depth=<n>
These two options affect how the objects contained in the pack
are stored using delta compression. The objects are first inter-
nally sorted by type, size and optionally names and compared
against the other objects within --window to see if using delta
compression saves space. --depth limits the maximum delta depth;
making it too deep affects the performance on the unpacker side,
because delta data needs to be applied that many times to get to
the necessary object. The default value for --window is 10 and
--depth is 50.
--window-memory=<n>
This option provides an additional limit on top of --window; the
window size will dynamically scale down so as to not take up
more than <n> bytes in memory. This is useful in repositories
with a mix of large and small objects to not run out of memory
with a large window, but still be able to take advantage of the
large window for the smaller objects. The size can be suffixed
with "k", "m", or "g". --window-memory=0 makes memory usage
unlimited, which is the default.
--max-pack-size=<n>
Maximum size of each output pack file. The size can be suffixed
with "k", "m", or "g". The minimum size allowed is limited to 1
MiB. If specified, multiple packfiles may be created. The
default is unlimited, unless the config variable pack.packSize-
Limit is set.
CONFIGURATION
By default, the command passes --delta-base-offset option to git
pack-objects; this typically results in slightly smaller packs, but the
generated packs are incompatible with versions of Git older than ver-
sion 1.4.4. If you need to share your repository with such ancient Git
versions, either directly or via the dumb http or rsync protocol, then
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GIT-REPACK(1)GIT-REPACK(1)
you need to set the configuration variable repack.UseDeltaBaseOffset to
"false" and repack. Access from old Git versions over the native proto-
col is unaffected by this option as the conversion is performed on the
fly as needed in that case.
AUTHOR
Written by Linus Torvalds <torvalds@osdl.org: mailto:torvalds@osdl.org>
DOCUMENTATION
Documentation by Ryan Anderson <ryan@michonline.com:
mailto:ryan@michonline.com>
SEE ALSOgit-pack-objects(1)git-prune-packed(1)GIT
Part of the git(1) suite
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