btrfs-progs: Convert man page for btrfs-check.

Convert man page for btrfs-check.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>

Documentation/Makefile

@@ -21,7 +21,7 @@ MAN8_TXT += btrfs-filesystem.txt
 MAN8_TXT += btrfs-balance.txt
 MAN8_TXT += btrfs-device.txt
 MAN8_TXT += btrfs-scrub.txt
-#MAN8_TXT += btrfs-check.txt
+MAN8_TXT += btrfs-check.txt
 #MAN8_TXT += btrfs-rescue.txt
 #MAN8_TXT += btrfs-inspect-internal.txt
 #MAN8_TXT += btrfs-send.txt

Documentation/btrfs-check.txt

@@ -0,0 +1,45 @@
+btrfs-check(8)
+==============
+
+NAME
+----
+btrfs-check - check or repair a btrfs filesystem offline
+
+SYNOPSIS
+--------
+'btrfs check' [options] <device>
+
+DESCRIPTION
+-----------
+'btrfs check' is used to check or repair a btrfs filesystem offline.
+
+OPTIONS
+-------
+-s|--support <superblock>::
+use <superblock>th superblock copy.
+--repair::
+try to repair the filesystem.
+--init-csum-tree::
+create a new CRC tree.
+--init-extent-tree::
+create a new extent tree.
+
+EXIT STATUS
+-----------
+'btrfs check' returns a zero exist status if it succeeds. Non zero is
+returned in case of failure.
+
+AVAILABILITY
+------------
+'btrfs' is part of btrfs-progs. Btrfs filesystem is currently under heavy
+development,
+and not suitable for any uses other than benchmarking and review.
+Please refer to the btrfs wiki http://btrfs.wiki.kernel.org for
+further details.
+
+SEE ALSO
+--------
+`mkfs.btrfs`(8),
+`btrfs-scrub`(8),
+`btrfs-rescue`(8)
+`btrfsck`(8)