diff options
| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
| commit | 19fcec84d8d7d21e796c7624e521b60d28ee21ed (patch) | |
| tree | 42d26aa27d1e3f7c0b8bd3fd14e7d7082f5008dc /src/doc/Commitdir.txt | |
| parent | Initial commit. (diff) | |
| download | ceph-19fcec84d8d7d21e796c7624e521b60d28ee21ed.tar.xz ceph-19fcec84d8d7d21e796c7624e521b60d28ee21ed.zip | |
Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/doc/Commitdir.txt')
| -rw-r--r-- | src/doc/Commitdir.txt | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/doc/Commitdir.txt b/src/doc/Commitdir.txt new file mode 100644 index 000000000..05c727be6 --- /dev/null +++ b/src/doc/Commitdir.txt @@ -0,0 +1,24 @@ +OLD + + +How Directory Committing Works: + +Each CDir has: + version - current version of directory + committing_version - which version was sent to stable storage + last_committed_version - last version to be safely stored + +Each Inode has: + parent_dir_version - what dir version i was in when i was dirtied. (*) + + (*) note that if you change an inode, mark_dirty() again, even if it's already dirty! + + +How committing works: + +A call to commit_dir(dir, context) will ensure tha the _current_ version is stored safely on disk before the context is finished. + +When a commit completes, inodes in the directory are checked. If they are dirty and belonged to the _committed_ (or earlier) version, then they are marked clean. If they belong to a newer version, then they are _still dirty_. + + + |