From c2bc6e6ab0ade70c475a73d06326e677e70840d2 Mon Sep 17 00:00:00 2001 From: Derrick Stolee Date: Tue, 18 Jun 2019 11:14:32 -0700 Subject: commit-graph: create options for split files The split commit-graph feature is now fully implemented, but needs some more run-time configurability. Allow direct callers to 'git commit-graph write --split' to specify the values used in the merge strategy and the expire time. Update the documentation to specify these values. Signed-off-by: Derrick Stolee Signed-off-by: Junio C Hamano --- Documentation/git-commit-graph.txt | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) (limited to 'Documentation/git-commit-graph.txt') diff --git a/Documentation/git-commit-graph.txt b/Documentation/git-commit-graph.txt index 624470e198..365e145e82 100644 --- a/Documentation/git-commit-graph.txt +++ b/Documentation/git-commit-graph.txt @@ -26,7 +26,7 @@ OPTIONS Use given directory for the location of packfiles and commit-graph file. This parameter exists to specify the location of an alternate that only has the objects directory, not a full `.git` directory. The - commit-graph file is expected to be at `/info/commit-graph` and + commit-graph file is expected to be in the `/info` directory and the packfiles are expected to be in `/pack`. @@ -51,6 +51,25 @@ or `--stdin-packs`.) + With the `--append` option, include all commits that are present in the existing commit-graph file. ++ +With the `--split` option, write the commit-graph as a chain of multiple +commit-graph files stored in `/info/commit-graphs`. The new commits +not already in the commit-graph are added in a new "tip" file. This file +is merged with the existing file if the following merge conditions are +met: ++ +* If `--size-multiple=` is not specified, let `X` equal 2. If the new +tip file would have `N` commits and the previous tip has `M` commits and +`X` times `N` is greater than `M`, instead merge the two files into a +single file. ++ +* If `--max-commits=` is specified with `M` a positive integer, and the +new tip file would have more than `M` commits, then instead merge the new +tip with the previous tip. ++ +Finally, if `--expire-time=` is not specified, let `datetime` +be the current time. After writing the split commit-graph, delete all +unused commit-graph whose modified times are older than `datetime`. 'read':: -- cgit v1.2.3