From 74d288e05c2d0cb97186f51049813b3e5b5bb0cd Mon Sep 17 00:00:00 2001
From: Dimitri John Ledkov <xnox@ubuntu.com>
Date: Wed, 18 Oct 2017 13:15:59 +0100
Subject: New upstream release.

---
 Documentation/btrfs-check.asciidoc | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

(limited to 'Documentation/btrfs-check.asciidoc')

diff --git a/Documentation/btrfs-check.asciidoc b/Documentation/btrfs-check.asciidoc
index 28ed9dd7..fbf48847 100644
--- a/Documentation/btrfs-check.asciidoc
+++ b/Documentation/btrfs-check.asciidoc
@@ -3,7 +3,7 @@ btrfs-check(8)
 
 NAME
 ----
-btrfs-check - check or repair an unmounted btrfs filesystem
+btrfs-check - check or repair a btrfs filesystem
 
 SYNOPSIS
 --------
@@ -13,7 +13,9 @@ DESCRIPTION
 -----------
 
 The filesystem checker is used to verify structural integrity of a filesystem
-and attempt to repair it if requested. The filesystem must be unmounted.
+and attempt to repair it if requested.  It is recommended to unmount the
+filesystem prior to running the check, but it is possible to start checking a
+mounted filesystem (see '--force').
 
 By default, *btrfs check* will not modify the device but you can reaffirm that
 by the option '--readonly'.
@@ -60,7 +62,7 @@ show extent state for the given subvolume
 -p|--progress::
 indicate progress at various checking phases
 
---qgroup-report::
+-Q|--qgroup-report::
 verify qgroup accounting and compare against filesystem accounting
 
 -r|--tree-root <bytenr>::
@@ -120,6 +122,12 @@ needs to re-read blocks when needed. This may increase run time.
 NOTE: 'lowmem' mode does not work with '--repair' yet, and is still considered
 experimental.
 
+--force::
+allow to work on a mounted filesystem. Note that this should work fine on a
+quiescent or read-only mounted filesystem but may crash if the device is
+changed externally, eg. by the kernel module.  Repair without mount checks is
+not supported right now.
+
 EXIT STATUS
 -----------
 *btrfs check* returns a zero exit status if it succeeds. Non zero is
-- 
cgit v1.2.3

