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-rw-r--r--man/mkfs.btrfs.8.in9
1 files changed, 9 insertions, 0 deletions
diff --git a/man/mkfs.btrfs.8.in b/man/mkfs.btrfs.8.in
index a3f15034..548e754f 100644
--- a/man/mkfs.btrfs.8.in
+++ b/man/mkfs.btrfs.8.in
@@ -15,6 +15,7 @@ mkfs.btrfs \- create a btrfs filesystem
[ \fB\-s\fP\fI sectorsize\fP ]
[ \fB\-r\fP\fI rootdir\fP ]
[ \fB\-K\fP ]
+[ \fB\-O\fP\fI feature1,feature2,...\fP ]
[ \fB\-h\fP ]
[ \fB\-V\fP ]
\fI device\fP [ \fIdevice ...\fP ]
@@ -77,6 +78,14 @@ Specify a directory to copy into the newly created fs.
\fB\-K\fR, \fB\-\-nodiscard \fR
Do not perform whole device TRIM operation by default.
.TP
+\fB\-O\fR, \fB\-\-features \fIfeature1,feature2,...\fR
+A list of filesystem features turned on at mkfs time. Not all features are
+supported by old kernels.
+
+To see all run
+
+\fBmkfs.btrfs -O list-all\fR
+.TP
\fB\-V\fR, \fB\-\-version\fR
Print the \fBmkfs.btrfs\fP version and exit.
.SH UNIT