mdmon.8: minor manpage update

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

1 files changed, 5 insertions, 0 deletions

diff --git a/mdmon.8 b/mdmon.8
index 8a482b34..5275a69b 100644
--- a/mdmon.8
+++ b/mdmon.8
@@ -186,6 +186,11 @@ mounted there are special considerations when the root filesystem is
 mounted from an
 .I mdmon
 monitored device.
+Note that in general
+.I mdmon
+is needed even if the filesystem is mounted read-only as some
+filesystems can still write to the device in those circumstances, for
+example to replay a journal after an unclean shutdown.
 
 When the array is assembled by the
 .B initramfs