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-rw-r--r--Documentation/btrfs-check.asciidoc12
1 files changed, 9 insertions, 3 deletions
diff --git a/Documentation/btrfs-check.asciidoc b/Documentation/btrfs-check.asciidoc
index 327a45d6..7371a23c 100644
--- a/Documentation/btrfs-check.asciidoc
+++ b/Documentation/btrfs-check.asciidoc
@@ -25,8 +25,12 @@ OPTIONS
-s|--super <superblock>::
use <superblock>th superblock copy, valid values are 0 up to 2 if the
respective superblock offset is within the filesystem
+-b|--backup::
+use the first backup roots stored in the superblock that is valid
--repair::
try to repair the filesystem
+--readonly::
+run in read-only mode (default)
--init-csum-tree::
create a new CRC tree and recalculate all checksums
--init-extent-tree::
@@ -37,10 +41,12 @@ verify checksums of data blocks
indicate progress at various checking phases
--qgroup-report::
verify qgroup accounting and compare against filesystem accounting
---subvol-extents <subvolid>::
-show extent state for a subvolume
---tree-root <bytenr>::
+-E|--subvol-extents <subvolid>::
+show extent state for the given subvolume
+-r|--tree-root <bytenr>::
use the given bytenr for the tree root
+--chunk-root <bytenr>::
+use the given bytenr for the chunk tree root
EXIT STATUS
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