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-rw-r--r--Documentation/btrfs-show-super.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/btrfs-show-super.txt b/Documentation/btrfs-show-super.txt
index e06157f5..62da6259 100644
--- a/Documentation/btrfs-show-super.txt
+++ b/Documentation/btrfs-show-super.txt
@@ -31,6 +31,10 @@ Specify which mirror to print out.
<super_mirror> is between 0 and 2.
If several '-i <super_mirror>' are given, only the last one is valid.
+-F::
+Attempt to print the superblock even if no superblock magic is found. May end
+badly.
+
EXIT STATUS
-----------
*btrfs-show-super* will return 0 if no error happened.