Support updating of uuid during --assemble.

Signed-off-by: Neil Brown <neilb@suse.de>

1 files changed, 10 insertions, 1 deletions

diff --git a/mdadm.8 b/mdadm.8
index e4f60c1..6123ccc 100644
--- a/mdadm.8
+++ b/mdadm.8
@@ -610,6 +610,7 @@ Update the superblock on each device while assembling the array.  The
 argument given to this flag can be one of
 .BR sparc2.2 ,
 .BR summaries ,
+.BR uuid ,
 .BR resync ,
 .BR byteorder ,
 or
@@ -617,7 +618,7 @@ or
 
 The
 .B sparc2.2
-option will  adjust the superblock of an array what was created on a Sparc
+option will adjust the superblock of an array what was created on a Sparc
 machine running a patched 2.2 Linux kernel.  This kernel got the
 alignment of part of the superblock wrong.  You can use the
 .B "--examine --sparc2.2"
@@ -634,6 +635,14 @@ assembled.  This is not needed on 2.6 and later kernels as they make
 this adjustment automatically.
 
 The
+.B uuid
+option will change the uuid of the array.  If a UUID is given with the
+"--uuid" option that UUID will be used as a new UUID and with
+.B NOT
+be used to help identify the devices in the array.
+If no "--uuid" is given, a random uuid is chosen.
+
+The
 .B resync
 option will cause the array to be marked
 .I dirty