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-rw-r--r--man/btrfs.8.in19
1 files changed, 19 insertions, 0 deletions
diff --git a/man/btrfs.8.in b/man/btrfs.8.in
index b9b89130..6f92f916 100644
--- a/man/btrfs.8.in
+++ b/man/btrfs.8.in
@@ -19,6 +19,8 @@ btrfs \- control a btrfs filesystem
.PP
\fBbtrfs\fP \fBfilesystem resize\fP\fI [+/\-]<size>[gkm]|max <filesystem>\fP
.PP
+\fBbtrfs\fP \fBfilesystem label\fP\fI <dev> [newlabel]\fP
+.PP
\fBbtrfs\fP \fBfilesystem defrag\fP\fI [options] <file>|<dir> [<file>|<dir>...]\fP
.PP
\fBbtrfs\fP \fBsubvolume find-new\fP\fI <subvolume> <last_gen>\fP
@@ -164,6 +166,23 @@ can expand the partition before enlarging the filesystem and shrink the
partition after reducing the size of the filesystem.
.TP
+\fBbtrfs\fP \fBfilesystem label\fP\fI <dev> [newlabel]\fP
+Show or update the label of a filesystem. \fI<dev>\fR is used to identify the
+filesystem.
+If a \fInewlabel\fR optional argument is passed, the label is changed. The
+following costraints exist for a label:
+.IP
+- the maximum allowable lenght shall be less or equal than 256 chars
+.IP
+- the label shall not contain the '/' or '\\' characters.
+
+NOTE: Currently there are the following limitations:
+.IP
+- the filesystem has to be unmounted
+.IP
+- the filesystem should not have more than one device.
+.TP
+
\fBfilesystem show\fR [<uuid>|<label>]\fR
Show the btrfs filesystem with some additional info. If no UUID or label is
passed, \fBbtrfs\fR show info of all the btrfs filesystem.