From: "Derrick Stolee via GitGitGadget" <gitgitgadget@gmail.com> To: git@vger.kernel.org Cc: peff@peff.net, avarab@gmail.com, git@jeffhostetler.com, jrnieder@google.com, steadmon@google.com, johannes.schindelin@gmx.de, Junio C Hamano <gitster@pobox.com>, Derrick Stolee <dstolee@microsoft.com> Subject: [PATCH v4 10/14] commit-graph: allow cross-alternate chains Date: Thu, 06 Jun 2019 07:15:37 -0700 (PDT) Message-ID: <62b3fca582814c2cee050bab07533409e22e2c3c.1559830527.git.gitgitgadget@gmail.com> (raw) In-Reply-To: <pull.184.v4.git.gitgitgadget@gmail.com> From: Derrick Stolee <dstolee@microsoft.com> In an environment like a fork network, it is helpful to have a commit-graph chain that spans both the base repo and the fork repo. The fork is usually a small set of data on top of the large repo, but sometimes the fork is much larger. For example, git-for-windows/git has almost double the number of commits as git/git because it rebases its commits on every major version update. To allow cross-alternate commit-graph chains, we need a few pieces: 1. When looking for a graph-{hash}.graph file, check all alternates. 2. When merging commit-graph chains, do not merge across alternates. 3. When writing a new commit-graph chain based on a commit-graph file in another object directory, do not allow success if the base file has of the name "commit-graph" instead of "commit-graphs/graoh-{hash}.graph". Signed-off-by: Derrick Stolee <dstolee@microsoft.com> --- Documentation/technical/commit-graph.txt | 40 +++++++++++++++++++++ commit-graph.c | 46 ++++++++++++++++++------ commit-graph.h | 1 + t/t5323-split-commit-graph.sh | 37 +++++++++++++++++++ 4 files changed, 114 insertions(+), 10 deletions(-) diff --git a/Documentation/technical/commit-graph.txt b/Documentation/technical/commit-graph.txt index d9c6253b0a..473032e476 100644 --- a/Documentation/technical/commit-graph.txt +++ b/Documentation/technical/commit-graph.txt @@ -266,6 +266,42 @@ The merge strategy values (2 for the size multiple, 64,000 for the maximum number of commits) could be extracted into config settings for full flexibility. +## Chains across multiple object directories + +In a repo with alternates, we look for the `commit-graph-chain` file starting +in the local object directory and then in each alternate. The first file that +exists defines our chain. As we look for the `graph-{hash}` files for +each `{hash}` in the chain file, we follow the same pattern for the host +directories. + +This allows commit-graphs to be split across multiple forks in a fork network. +The typical case is a large "base" repo with many smaller forks. + +As the base repo advances, it will likely update and merge its commit-graph +chain more frequently than the forks. If a fork updates their commit-graph after +the base repo, then it should "reparent" the commit-graph chain onto the new +chain in the base repo. When reading each `graph-{hash}` file, we track +the object directory containing it. During a write of a new commit-graph file, +we check for any changes in the source object directory and read the +`commit-graph-chain` file for that source and create a new file based on those +files. During this "reparent" operation, we necessarily need to collapse all +levels in the fork, as all of the files are invalid against the new base file. + +It is crucial to be careful when cleaning up "unreferenced" `graph-{hash}.graph` +files in this scenario. It falls to the user to define the proper settings for +their custom environment: + + 1. When merging levels in the base repo, the unreferenced files may still be + referenced by chains from fork repos. + + 2. The expiry time should be set to a length of time such that every fork has + time to recompute their commit-graph chain to "reparent" onto the new base + file(s). + + 3. If the commit-graph chain is updated in the base, the fork will not have + access to the new chain until its chain is updated to reference those files. + (This may change in the future [5].) + Related Links ------------- [0] https://bugs.chromium.org/p/git/issues/detail?id=8 @@ -292,3 +328,7 @@ Related Links [4] https://public-inbox.org/git/20180108154822.54829-1-git@jeffhostetler.com/T/#u A patch to remove the ahead-behind calculation from 'status'. + +[5] https://public-inbox.org/git/f27db281-abad-5043-6d71-cbb083b1c877@gmail.com/ + A discussion of a "two-dimensional graph position" that can allow reading + multiple commit-graph chains at the same time. diff --git a/commit-graph.c b/commit-graph.c index 59c1067e70..39d986bb29 100644 --- a/commit-graph.c +++ b/commit-graph.c @@ -320,6 +320,9 @@ static struct commit_graph *load_commit_graph_v1(struct repository *r, const cha struct commit_graph *g = load_commit_graph_one(graph_name); free(graph_name); + if (g) + g->obj_dir = obj_dir; + return g; } @@ -385,8 +388,7 @@ static struct commit_graph *load_commit_graph_chain(struct repository *r, const oids = xcalloc(st.st_size / (the_hash_algo->hexsz + 1), sizeof(struct object_id)); while (strbuf_getline_lf(&line, fp) != EOF && valid) { - char *graph_name; - struct commit_graph *g; + struct object_directory *odb; if (get_oid_hex(line.buf, &oids[i])) { warning(_("invalid commit-graph chain: line '%s' not a hash"), @@ -395,14 +397,23 @@ static struct commit_graph *load_commit_graph_chain(struct repository *r, const break; } - graph_name = get_split_graph_filename(obj_dir, line.buf); - g = load_commit_graph_one(graph_name); - free(graph_name); + for (odb = r->objects->odb; odb; odb = odb->next) { + char *graph_name = get_split_graph_filename(odb->path, line.buf); + struct commit_graph *g = load_commit_graph_one(graph_name); - if (g && add_graph_to_chain(g, graph_chain, oids, i)) - graph_chain = g; - else - valid = 0; + free(graph_name); + + if (g) { + g->obj_dir = odb->path; + + if (add_graph_to_chain(g, graph_chain, oids, i)) + graph_chain = g; + else + valid = 0; + + break; + } + } } free(oids); @@ -1411,7 +1422,7 @@ static int write_commit_graph_file(struct write_commit_graph_context *ctx) if (ctx->split && ctx->base_graph_name && ctx->num_commit_graphs_after > 1) { char *new_base_hash = xstrdup(oid_to_hex(&ctx->new_base_graph->oid)); - char *new_base_name = get_split_graph_filename(ctx->obj_dir, new_base_hash); + char *new_base_name = get_split_graph_filename(ctx->new_base_graph->obj_dir, new_base_hash); free(ctx->commit_graph_filenames_after[ctx->num_commit_graphs_after - 2]); free(ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 2]); @@ -1486,6 +1497,9 @@ static void split_graph_merge_strategy(struct write_commit_graph_context *ctx) while (g && (g->num_commits <= split_strategy_size_mult * num_commits || num_commits > split_strategy_max_commits)) { + if (strcmp(g->obj_dir, ctx->obj_dir)) + break; + num_commits += g->num_commits; g = g->base_graph; @@ -1494,6 +1508,18 @@ static void split_graph_merge_strategy(struct write_commit_graph_context *ctx) ctx->new_base_graph = g; + if (ctx->num_commit_graphs_after == 2) { + char *old_graph_name = get_commit_graph_filename(g->obj_dir); + + if (!strcmp(g->filename, old_graph_name) && + strcmp(g->obj_dir, ctx->obj_dir)) { + ctx->num_commit_graphs_after = 1; + ctx->new_base_graph = NULL; + } + + free(old_graph_name); + } + ALLOC_ARRAY(ctx->commit_graph_filenames_after, ctx->num_commit_graphs_after); ALLOC_ARRAY(ctx->commit_graph_hash_after, ctx->num_commit_graphs_after); diff --git a/commit-graph.h b/commit-graph.h index 5c48c4f66a..10466bc064 100644 --- a/commit-graph.h +++ b/commit-graph.h @@ -48,6 +48,7 @@ struct commit_graph { uint32_t num_commits; struct object_id oid; char *filename; + const char *obj_dir; uint32_t num_commits_in_base; struct commit_graph *base_graph; diff --git a/t/t5323-split-commit-graph.sh b/t/t5323-split-commit-graph.sh index 5cb5663a30..cd4d5f05b6 100755 --- a/t/t5323-split-commit-graph.sh +++ b/t/t5323-split-commit-graph.sh @@ -90,6 +90,21 @@ test_expect_success 'add more commits, and write a new base graph' ' graph_read_expect 12 ' +test_expect_success 'fork and fail to base a chain on a commit-graph file' ' + test_when_finished rm -rf fork && + git clone . fork && + ( + cd fork && + rm .git/objects/info/commit-graph && + echo "$(pwd)"/../.git/objects >.git/objects/info/alternates && + test_commit new-commit && + git commit-graph write --reachable --split && + test_path_is_file $graphdir/commit-graph-chain && + test_line_count = 1 $graphdir/commit-graph-chain && + verify_chain_files_exist $graphdir + ) +' + test_expect_success 'add three more commits, write a tip graph' ' git reset --hard commits/3 && git merge merge/1 && @@ -132,4 +147,26 @@ test_expect_success 'add one commit, write a merged graph' ' graph_git_behavior 'merged commit-graph: commit 12 vs 6' commits/12 commits/6 +test_expect_success 'create fork and chain across alternate' ' + git clone . fork && + ( + cd fork && + git config core.commitGraph true && + rm -rf $graphdir && + echo "$(pwd)"/../.git/objects >.git/objects/info/alternates && + test_commit 13 && + git branch commits/13 && + git commit-graph write --reachable --split && + test_path_is_file $graphdir/commit-graph-chain && + test_line_count = 3 $graphdir/commit-graph-chain && + ls $graphdir/graph-*.graph >graph-files && + test_line_count = 1 graph-files && + git -c core.commitGraph=true rev-list HEAD >expect && + git -c core.commitGraph=false rev-list HEAD >actual && + test_cmp expect actual + ) +' + +graph_git_behavior 'alternate: commit 13 vs 6' commits/13 commits/6 + test_done -- gitgitgadget
next prev parent reply index Thread overview: 136+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-05-08 15:53 [PATCH 00/17] [RFC] Commit-graph: Write incremental files Derrick Stolee via GitGitGadget 2019-05-08 15:53 ` [PATCH 01/17] commit-graph: fix the_repository reference Derrick Stolee via GitGitGadget 2019-05-08 15:53 ` [PATCH 02/17] commit-graph: return with errors during write Derrick Stolee via GitGitGadget 2019-05-08 15:53 ` [PATCH 04/17] commit-graph: remove Future Work section Derrick Stolee via GitGitGadget 2019-05-08 15:53 ` [PATCH 03/17] commit-graph: collapse parameters into flags Derrick Stolee via GitGitGadget 2019-05-08 15:53 ` [PATCH 05/17] commit-graph: create write_commit_graph_context Derrick Stolee via GitGitGadget 2019-05-08 15:53 ` [PATCH 06/17] commit-graph: extract fill_oids_from_packs() Derrick Stolee via GitGitGadget 2019-05-08 15:53 ` [PATCH 07/17] commit-graph: extract fill_oids_from_commit_hex() Derrick Stolee via GitGitGadget 2019-05-08 15:53 ` [PATCH 08/17] commit-graph: extract fill_oids_from_all_packs() Derrick Stolee via GitGitGadget 2019-05-08 15:53 ` [PATCH 09/17] commit-graph: extract count_distinct_commits() Derrick Stolee via GitGitGadget 2019-05-08 15:53 ` [PATCH 10/17] commit-graph: extract copy_oids_to_commits() Derrick Stolee via GitGitGadget 2019-05-08 15:53 ` [PATCH 11/17] commit-graph: extract write_commit_graph_file() Derrick Stolee via GitGitGadget 2019-05-08 15:53 ` [PATCH 12/17] Documentation: describe split commit-graphs Derrick Stolee via GitGitGadget 2019-05-08 17:20 ` SZEDER Gábor 2019-05-08 19:00 ` Derrick Stolee 2019-05-08 20:11 ` Ævar Arnfjörð Bjarmason 2019-05-09 4:49 ` Junio C Hamano 2019-05-09 12:25 ` Derrick Stolee 2019-05-09 13:45 ` Derrick Stolee 2019-05-09 15:48 ` Ævar Arnfjörð Bjarmason 2019-05-09 17:08 ` Derrick Stolee 2019-05-09 21:45 ` Ævar Arnfjörð Bjarmason 2019-05-10 12:44 ` Derrick Stolee 2019-05-08 15:53 ` [PATCH 13/17] commit-graph: lay groundwork for incremental files Derrick Stolee via GitGitGadget 2019-05-08 15:53 ` [PATCH 14/17] commit-graph: load split commit-graph files Derrick Stolee via GitGitGadget 2019-05-08 15:54 ` [PATCH 15/17] commit-graph: write " Derrick Stolee via GitGitGadget 2019-05-08 15:54 ` [PATCH 16/17] commit-graph: add --split option Derrick Stolee via GitGitGadget 2019-05-08 15:54 ` [PATCH 17/17] fetch: add fetch.writeCommitGraph config setting Derrick Stolee via GitGitGadget 2019-05-09 8:07 ` Ævar Arnfjörð Bjarmason 2019-05-09 14:21 ` Derrick Stolee 2019-05-08 19:27 ` [PATCH 00/17] [RFC] Commit-graph: Write incremental files Ævar Arnfjörð Bjarmason 2019-05-22 19:53 ` [PATCH v2 00/11] " Derrick Stolee via GitGitGadget 2019-05-22 19:53 ` [PATCH v2 01/11] commit-graph: document commit-graph chains Derrick Stolee via GitGitGadget 2019-05-22 19:53 ` [PATCH v2 02/11] commit-graph: prepare for " Derrick Stolee via GitGitGadget 2019-05-22 19:53 ` [PATCH v2 03/11] commit-graph: rename commit_compare to oid_compare Derrick Stolee via GitGitGadget 2019-05-22 19:53 ` [PATCH v2 05/11] commit-graph: add base graphs chunk Derrick Stolee via GitGitGadget 2019-05-22 19:53 ` [PATCH v2 04/11] commit-graph: load commit-graph chains Derrick Stolee via GitGitGadget 2019-05-22 19:53 ` [PATCH v2 06/11] commit-graph: rearrange chunk count logic Derrick Stolee via GitGitGadget 2019-05-22 19:53 ` [PATCH v2 08/11] commit-graph: add --split option to builtin Derrick Stolee via GitGitGadget 2019-05-27 11:28 ` SZEDER Gábor 2019-05-22 19:53 ` [PATCH v2 07/11] commit-graph: write commit-graph chains Derrick Stolee via GitGitGadget 2019-05-22 19:53 ` [PATCH v2 09/11] commit-graph: merge " Derrick Stolee via GitGitGadget 2019-05-23 0:43 ` Ævar Arnfjörð Bjarmason 2019-05-23 13:00 ` Derrick Stolee 2019-05-22 19:53 ` [PATCH v2 10/11] commit-graph: allow cross-alternate chains Derrick Stolee via GitGitGadget 2019-05-22 19:53 ` [PATCH v2 11/11] commit-graph: expire commit-graph files Derrick Stolee via GitGitGadget 2019-06-03 16:03 ` [PATCH v3 00/14] Commit-graph: Write incremental files Derrick Stolee via GitGitGadget 2019-06-03 16:03 ` [PATCH v3 01/14] commit-graph: document commit-graph chains Derrick Stolee via GitGitGadget 2019-06-05 17:22 ` Junio C Hamano 2019-06-05 18:09 ` Derrick Stolee 2019-06-06 12:10 ` Philip Oakley 2019-06-06 17:09 ` Derrick Stolee 2019-06-06 21:59 ` Philip Oakley 2019-06-03 16:03 ` [PATCH v3 02/14] commit-graph: prepare for " Derrick Stolee via GitGitGadget 2019-06-03 16:03 ` [PATCH v3 03/14] commit-graph: rename commit_compare to oid_compare Derrick Stolee via GitGitGadget 2019-06-03 16:03 ` [PATCH v3 04/14] commit-graph: load commit-graph chains Derrick Stolee via GitGitGadget 2019-06-03 16:03 ` [PATCH v3 05/14] commit-graph: add base graphs chunk Derrick Stolee via GitGitGadget 2019-06-03 16:03 ` [PATCH v3 06/14] commit-graph: rearrange chunk count logic Derrick Stolee via GitGitGadget 2019-06-03 16:03 ` [PATCH v3 07/14] commit-graph: write commit-graph chains Derrick Stolee via GitGitGadget 2019-06-03 16:03 ` [PATCH v3 08/14] commit-graph: add --split option to builtin Derrick Stolee via GitGitGadget 2019-06-03 16:03 ` [PATCH v3 09/14] commit-graph: merge commit-graph chains Derrick Stolee via GitGitGadget 2019-06-03 16:03 ` [PATCH v3 10/14] commit-graph: allow cross-alternate chains Derrick Stolee via GitGitGadget 2019-06-03 16:03 ` [PATCH v3 11/14] commit-graph: expire commit-graph files Derrick Stolee via GitGitGadget 2019-06-03 16:04 ` [PATCH v3 13/14] commit-graph: verify chains with --shallow mode Derrick Stolee via GitGitGadget 2019-06-03 16:04 ` [PATCH v3 12/14] commit-graph: create options for split files Derrick Stolee via GitGitGadget 2019-06-03 16:04 ` [PATCH v3 14/14] commit-graph: clean up chains after flattened write Derrick Stolee via GitGitGadget 2019-06-06 14:15 ` [PATCH v4 00/14] Commit-graph: Write incremental files Derrick Stolee via GitGitGadget 2019-06-06 14:15 ` [PATCH v4 01/14] commit-graph: document commit-graph chains Derrick Stolee via GitGitGadget 2019-06-06 14:15 ` [PATCH v4 02/14] commit-graph: prepare for " Derrick Stolee via GitGitGadget 2019-06-06 15:19 ` Philip Oakley 2019-06-06 21:28 ` Junio C Hamano 2019-06-07 12:44 ` Derrick Stolee 2019-06-06 14:15 ` [PATCH v4 03/14] commit-graph: rename commit_compare to oid_compare Derrick Stolee via GitGitGadget 2019-06-06 14:15 ` [PATCH v4 04/14] commit-graph: load commit-graph chains Derrick Stolee via GitGitGadget 2019-06-06 22:20 ` Junio C Hamano 2019-06-07 12:53 ` Derrick Stolee 2019-06-06 14:15 ` [PATCH v4 05/14] commit-graph: add base graphs chunk Derrick Stolee via GitGitGadget 2019-06-07 18:15 ` Junio C Hamano 2019-06-06 14:15 ` [PATCH v4 06/14] commit-graph: rearrange chunk count logic Derrick Stolee via GitGitGadget 2019-06-07 18:23 ` Junio C Hamano 2019-06-06 14:15 ` [PATCH v4 08/14] commit-graph: add --split option to builtin Derrick Stolee via GitGitGadget 2019-06-07 21:57 ` Junio C Hamano 2019-06-11 12:51 ` Derrick Stolee 2019-06-11 19:45 ` Junio C Hamano 2019-06-06 14:15 ` [PATCH v4 07/14] commit-graph: write commit-graph chains Derrick Stolee via GitGitGadget 2019-06-06 14:15 ` [PATCH v4 09/14] commit-graph: merge " Derrick Stolee via GitGitGadget 2019-06-06 14:15 ` Derrick Stolee via GitGitGadget [this message] 2019-06-06 17:00 ` [PATCH v4 10/14] commit-graph: allow cross-alternate chains Philip Oakley 2019-06-06 14:15 ` [PATCH v4 11/14] commit-graph: expire commit-graph files Derrick Stolee via GitGitGadget 2019-06-06 14:15 ` [PATCH v4 12/14] commit-graph: create options for split files Derrick Stolee via GitGitGadget 2019-06-06 18:41 ` Ramsay Jones 2019-06-06 14:15 ` [PATCH v4 13/14] commit-graph: verify chains with --shallow mode Derrick Stolee via GitGitGadget 2019-06-06 14:15 ` [PATCH v4 14/14] commit-graph: clean up chains after flattened write Derrick Stolee via GitGitGadget 2019-06-06 16:57 ` [PATCH v4 00/14] Commit-graph: Write incremental files Junio C Hamano 2019-06-07 12:37 ` Derrick Stolee 2019-06-07 18:38 ` [PATCH v5 00/16] " Derrick Stolee via GitGitGadget 2019-06-07 18:38 ` [PATCH v5 01/16] commit-graph: document commit-graph chains Derrick Stolee via GitGitGadget 2019-06-07 18:38 ` [PATCH v5 02/16] commit-graph: prepare for " Derrick Stolee via GitGitGadget 2019-06-07 18:38 ` [PATCH v5 04/16] commit-graph: load " Derrick Stolee via GitGitGadget 2019-06-10 21:47 ` Junio C Hamano 2019-06-10 23:41 ` Derrick Stolee 2019-06-07 18:38 ` [PATCH v5 03/16] commit-graph: rename commit_compare to oid_compare Derrick Stolee via GitGitGadget 2019-06-07 18:38 ` [PATCH v5 05/16] commit-graph: add base graphs chunk Derrick Stolee via GitGitGadget 2019-06-07 18:38 ` [PATCH v5 06/16] commit-graph: rearrange chunk count logic Derrick Stolee via GitGitGadget 2019-06-07 18:38 ` [PATCH v5 07/16] commit-graph: write commit-graph chains Derrick Stolee via GitGitGadget 2019-06-07 18:38 ` [PATCH v5 08/16] commit-graph: add --split option to builtin Derrick Stolee via GitGitGadget 2019-06-07 18:38 ` [PATCH v5 09/16] commit-graph: merge commit-graph chains Derrick Stolee via GitGitGadget 2019-06-07 18:38 ` [PATCH v5 10/16] commit-graph: allow cross-alternate chains Derrick Stolee via GitGitGadget 2019-06-07 18:38 ` [PATCH v5 11/16] commit-graph: expire commit-graph files Derrick Stolee via GitGitGadget 2019-06-07 18:38 ` [PATCH v5 13/16] commit-graph: verify chains with --shallow mode Derrick Stolee via GitGitGadget 2019-06-07 18:38 ` [PATCH v5 12/16] commit-graph: create options for split files Derrick Stolee via GitGitGadget 2019-06-07 18:38 ` [PATCH v5 14/16] commit-graph: clean up chains after flattened write Derrick Stolee via GitGitGadget 2019-06-07 18:38 ` [PATCH v5 15/16] commit-graph: test octopus merges with --split Derrick Stolee via GitGitGadget 2019-06-07 18:38 ` [PATCH v5 16/16] commit-graph: test --split across alternate without --split Derrick Stolee via GitGitGadget 2019-06-17 15:02 ` [PATCH] commit-graph: normalize commit-graph filenames Derrick Stolee 2019-06-17 15:07 ` Derrick Stolee 2019-06-17 18:07 ` [PATCH v2] " Derrick Stolee 2019-06-18 18:14 ` [PATCH v6 00/18] Commit-graph: Write incremental files Derrick Stolee via GitGitGadget 2019-06-18 18:14 ` [PATCH v6 01/18] commit-graph: document commit-graph chains Derrick Stolee via GitGitGadget 2019-06-18 18:14 ` [PATCH v6 03/18] commit-graph: rename commit_compare to oid_compare Derrick Stolee via GitGitGadget 2019-06-18 18:14 ` [PATCH v6 02/18] commit-graph: prepare for commit-graph chains Derrick Stolee via GitGitGadget 2019-06-18 18:14 ` [PATCH v6 04/18] commit-graph: load " Derrick Stolee via GitGitGadget 2019-06-18 18:14 ` [PATCH v6 05/18] commit-graph: add base graphs chunk Derrick Stolee via GitGitGadget 2019-06-18 18:14 ` [PATCH v6 06/18] commit-graph: rearrange chunk count logic Derrick Stolee via GitGitGadget 2019-06-18 18:14 ` [PATCH v6 07/18] commit-graph: write commit-graph chains Derrick Stolee via GitGitGadget 2019-06-18 18:14 ` [PATCH v6 08/18] commit-graph: add --split option to builtin Derrick Stolee via GitGitGadget 2019-06-18 18:14 ` [PATCH v6 09/18] commit-graph: merge commit-graph chains Derrick Stolee via GitGitGadget 2019-06-18 18:14 ` [PATCH v6 10/18] commit-graph: allow cross-alternate chains Derrick Stolee via GitGitGadget 2019-06-18 18:14 ` [PATCH v6 11/18] commit-graph: expire commit-graph files Derrick Stolee via GitGitGadget 2019-06-18 18:14 ` [PATCH v6 13/18] commit-graph: verify chains with --shallow mode Derrick Stolee via GitGitGadget 2019-06-18 18:14 ` [PATCH v6 12/18] commit-graph: create options for split files Derrick Stolee via GitGitGadget 2019-06-18 18:14 ` [PATCH v6 14/18] commit-graph: clean up chains after flattened write Derrick Stolee via GitGitGadget 2019-06-18 18:14 ` [PATCH v6 15/18] commit-graph: test octopus merges with --split Derrick Stolee via GitGitGadget 2019-06-18 18:14 ` [PATCH v6 16/18] commit-graph: test --split across alternate without --split Derrick Stolee via GitGitGadget 2019-06-18 18:14 ` [PATCH v6 18/18] commit-graph: test verify across alternates Derrick Stolee via GitGitGadget 2019-06-18 18:14 ` [PATCH v6 17/18] commit-graph: normalize commit-graph filenames Derrick Stolee via GitGitGadget
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