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-rw-r--r--debug-tree.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/debug-tree.c b/debug-tree.c
index 94ffd8ee..f6bd5d8b 100644
--- a/debug-tree.c
+++ b/debug-tree.c
@@ -30,7 +30,15 @@
static int print_usage(void)
{
- fprintf(stderr, "usage: debug-tree [ -e ] device\n");
+ fprintf(stderr, "usage: btrfs-debug-tree [ -e ] [ -d ] [ -r ] [ -R ]\n");
+ fprintf(stderr, " [-b block_num ] device\n");
+ fprintf(stderr, "\t-e : print detailed extents info\n");
+ fprintf(stderr, "\t-d : print info of btrfs device and root tree dirs"
+ " only\n");
+ fprintf(stderr, "\t-r : print info of roots only\n");
+ fprintf(stderr, "\t-R : print info of roots and root backups\n");
+ fprintf(stderr, "\t-b block_num : print info of the specified block"
+ " only\n");
fprintf(stderr, "%s\n", BTRFS_BUILD_VERSION);
exit(1);
}