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Diffstat (limited to 'doc/dev/delayed-delete.rst')
| -rw-r--r-- | doc/dev/delayed-delete.rst | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/doc/dev/delayed-delete.rst b/doc/dev/delayed-delete.rst new file mode 100644 index 00000000..bf5f65a4 --- /dev/null +++ b/doc/dev/delayed-delete.rst @@ -0,0 +1,12 @@ +========================= + CephFS delayed deletion +========================= + +When you delete a file, the data is not immediately removed. Each +object in the file needs to be removed independently, and sending +``size_of_file / stripe_size * replication_count`` messages would slow +the client down too much, and use a too much of the clients +bandwidth. Additionally, snapshots may mean some objects should not be +deleted. + +Instead, the file is marked as deleted on the MDS, and deleted lazily. |