WHATSNEW: Mention MR 4212

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Sun Oct 26 09:10:57 UTC 2025 on atb-devel-224

diff --git a/WHATSNEW.txt b/WHATSNEW.txt
index 5447e383b27fce125144286340a4578ca49e0d07..66be80f64f28d10ac6a3fa34418865ccef56703f 100644 (file)
--- a/WHATSNEW.txt
+++ b/WHATSNEW.txt
@@ -34,6 +34,22 @@ log changes to the following attributes:
 For the JSON logs, changes to these will be logged with the "action"
 field set to "Auth info change".
 
+
+vfs_streams_xattr can hold larger streams
+-----------------------------------------
+
+On Linux the size of a single extended attribute is limited to 65536
+bytes of size. For some file systems, this is also the overall limit
+of space for xattrs, but for example xfs can hold more than that 64k
+of extended xattrs, although the individual xattr is still limited to
+64k. Setting
+
+streams_xattr:max xattrs per stream = 1
+
+to a higher value than 1 will allow Samba to shard the stream to more
+than one xattr. It has an artificial limit of 16 for a maximum stream
+length of 1MB.
+
 REMOVED FEATURES
 ================