update sources to 12.2.7

[ceph.git] / ceph / doc / dev / rbd-export.rst

diff --git a/ceph/doc/dev/rbd-export.rst b/ceph/doc/dev/rbd-export.rst
index 0d34d611b64f416979e045d2c074179140104e8b..2edb637f6ef15539103842c0deff46b99388519c 100644 (file)
--- a/ceph/doc/dev/rbd-export.rst
+++ b/ceph/doc/dev/rbd-export.rst
@@ -65,6 +65,14 @@ Image Stripe count
 - le64: length of appending data (8)
 - le64: image striping count
 
+ImageMeta Key and Value
+-----------------------
+
+- u8: 'M'
+- le64: length of appending data (length of key + length of value + 4 * 2)
+- string: image-meta key
+- string: image-meta value
+
 Final Record
 ~~~~~~~~~~~~
 
@@ -75,9 +83,21 @@ End
 
 
 Diffs records
-~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~
+
 Record the all snapshots and the HEAD in this section. 
 
+Snap Protection status
+----------------------
+
+Record the snapshot's protection status if `--export-format=2`.
+- u8: 'p'
+- le64: length of appending data (8)
+- u8: snap protection status (0 for false, 1 for true)
+
+Others
+------
+
 - le64: number of diffs
 - Diffs ...