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-rw-r--r--Documentation/btrfs-image.txt3
-rw-r--r--btrfs-image.c1
2 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/btrfs-image.txt b/Documentation/btrfs-image.txt
index 7ee820c2..155194a1 100644
--- a/Documentation/btrfs-image.txt
+++ b/Documentation/btrfs-image.txt
@@ -48,6 +48,9 @@ Walk all the trees manually and copy any blocks that are referenced. Use this
option if your extent tree is corrupted to make sure that all of the metadata is
captured.
+-m::
+Restore for multiple devices, more than 1 device should be provided.
+
EXIT STATUS
-----------
*btrfs-image* will return 0 if no error happened.
diff --git a/btrfs-image.c b/btrfs-image.c
index 3ca3b400..c9dd0232 100644
--- a/btrfs-image.c
+++ b/btrfs-image.c
@@ -2446,6 +2446,7 @@ static void print_usage(void)
fprintf(stderr, "\t-o \tdon't mess with the chunk tree when restoring\n");
fprintf(stderr, "\t-s \tsanitize file names, use once to just use garbage, use twice if you want crc collisions\n");
fprintf(stderr, "\t-w \twalk all trees instead of using extent tree, do this if your extent tree is broken\n");
+ fprintf(stderr, "\t-m \trestore for multiple devices\n");
exit(1);
}