bitmap: Enforce maximum bitmap name length
We document that for qcow2 persistent bitmaps, the name cannot exceed
1023 bytes. It is inconsistent if transient bitmaps do not have to
abide by the same limit, and it is unlikely that any existing client
even cares about using bitmap names this long. It's time to codify
that ALL bitmaps managed by qemu (whether persistent in qcow2 or not)
have a documented maximum length.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20191114024635.11363-3-eblake@redhat.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
diff --git a/qapi/block-core.json b/qapi/block-core.json
index aa97ee2..0cf68fe 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -2042,7 +2042,7 @@
#
# @node: name of device/node which the bitmap is tracking
#
-# @name: name of the dirty bitmap
+# @name: name of the dirty bitmap (must be less than 1024 bytes)
#
# @granularity: the bitmap granularity, default is 64k for
# block-dirty-bitmap-add
