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Diffstat (limited to 'doc/development/git_object_deduplication.md')
| -rw-r--r-- | doc/development/git_object_deduplication.md | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/doc/development/git_object_deduplication.md b/doc/development/git_object_deduplication.md index 1a864ef81f0..a6b359769f8 100644 --- a/doc/development/git_object_deduplication.md +++ b/doc/development/git_object_deduplication.md @@ -18,8 +18,8 @@ GitLab implements Git object deduplication. ### Understanding Git alternates -At the Git level, we achieve deduplication by using [Git -alternates](https://git-scm.com/docs/gitrepository-layout#gitrepository-layout-objects). +At the Git level, we achieve deduplication by using +[Git alternates](https://git-scm.com/docs/gitrepository-layout#gitrepository-layout-objects). Git alternates is a mechanism that lets a repository borrow objects from another repository on the same machine. @@ -44,8 +44,8 @@ reliable decide if an object is no longer needed. ### Git alternates in GitLab: pool repositories -GitLab organizes this object borrowing by [creating special **pool -repositories**](../administration/repository_storage_types.md) which are hidden from the user. We then use Git +GitLab organizes this object borrowing by [creating special **pool repositories**](../administration/repository_storage_types.md) +which are hidden from the user. We then use Git alternates to let a collection of project repositories borrow from a single pool repository. We call such a collection of project repositories a pool. Pools form star-shaped networks of repositories @@ -99,9 +99,8 @@ are as follows: ### Assumptions -- All repositories in a pool must use [hashed - storage](../administration/repository_storage_types.md). This is so - that we don't have to ever worry about updating paths in +- All repositories in a pool must use [hashed storage](../administration/repository_storage_types.md). + This is so that we don't have to ever worry about updating paths in `object/info/alternates` files. - All repositories in a pool must be on the same Gitaly storage shard. The Git alternates mechanism relies on direct disk access across |