path: root/Documentation
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authorDavid Sterba <>2016-01-11 16:28:14 +0100
committerDavid Sterba <>2016-01-12 15:02:54 +0100
commit83a7413318f22dbac86274cd2ae173ed350b04d3 (patch)
tree9d0fa50622357dcde3d95a8de967c426c66176b2 /Documentation
parent23c51533aec69bef815b5db9eb5ec6755913eb6d (diff)
btrfs-progs: docs: document new mount option fragment
Signed-off-by: David Sterba <>
Diffstat (limited to 'Documentation')
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/btrfs-man5.asciidoc b/Documentation/btrfs-man5.asciidoc
index 2bb95767..d4323917 100644
--- a/Documentation/btrfs-man5.asciidoc
+++ b/Documentation/btrfs-man5.asciidoc
@@ -207,6 +207,14 @@ behavior only when a snapshot was created.
Disabling flushing may improve performance but is not crash-safe.
+(depends on compile-time option BTRFS_DEBUG, since: 4.4, default: off)
+A debugging helper to intentionally fragment given 'type' of block groups. The
+type can be 'data', 'metadata' or 'all'. This mount option should not be used
+outside of debugging environments and is not recognized if the kernel config
+option 'BTRFS_DEBUG' is not enabled.
(since: 3.0, default: off)