Adds explanation to help message and man page how to use `filesystem resize'
to resize only a single device not all devices of a file system.
Signed-off-by: Hubert Kario <ka...@wit.edu.pl>
---
patch to apply cleanly requires my previous patches adding advanced help
functionality
btrfs.c | 10 +++++++---
man/btrfs.8.in | 6 ++++--
2 files changed, 11 insertions(+), 5 deletions(-)
diff --git a/btrfs.c b/btrfs.c
index bd6f6f8..a28a573 100644
--- a/btrfs.c
+++ b/btrfs.c
@@ -98,10 +98,14 @@ static struct Command commands[] = {
NULL
},
{ do_resize, 2,
- "filesystem resize", "[+/-]<newsize>[gkm]|max <filesystem>\n"
+ "filesystem resize", "[<devid>:][+|-]<newsize>[gkm]|max
<filesystem>\n"
"Resize the file system. If 'max' is passed, the filesystem\n"
- "will occupe all available space on the device.",
- NULL
+ "will occupy all available space on the device.",
+ "[<devid>:][+|-]<newsize>[gkm]|max <filesystem>\n"
+ "Resize the file system. If no <devid> is specified, change
is\n"
+ "applied to every device in file system. If devid is
specified\n"
+ "the change in size is applied only to selected device.\n"
+ "To get device numbers use `btrfs filesystem show\' command."
},
{ do_show_filesystem, 999,
"filesystem show", "[<uuid>|<label>]\n"
diff --git a/man/btrfs.8.in b/man/btrfs.8.in
index cba2de1..afb9824 100644
--- a/man/btrfs.8.in
+++ b/man/btrfs.8.in
@@ -19,7 +19,7 @@ btrfs \- control a btrfs filesystem
.PP
\fBbtrfs\fP \fBfilesystem sync\fP\fI <path> \fP
.PP
-\fBbtrfs\fP \fBfilesystem resize\fP\fI [+/\-]<size>[gkm]|max <filesystem>\fP
+\fBbtrfs\fP \fBfilesystem resize\fP\fI [<devid>:][+|\-]<size>[gkm]|max
<filesystem>\fP
.PP
\fBbtrfs\fP \fBdevice scan\fP\fI [<device> [<device>..]]\fP
.PP
@@ -138,9 +138,11 @@ Force a sync for the filesystem identified by \fI<path>\fR.
.\" Some wording are extracted by the resize2fs man page
.\"
-\fBfilesystem resize\fR\fI [+/\-]<size>[gkm]|max <path>\fR
+\fBfilesystem resize\fR\fI [<devid>:][+|\-]<size>[gkm]|max <path>\fR
Resize a filesystem identified by \fI<path>\fR.
The \fI<size>\fR parameter specifies the new size of the filesystem.
+To change size of only one device the device id can be specified before
\fI:\fR.
+Device identifiers are printed by \fBfilesystem show\fR command.
If the prefix \fI+\fR or \fI\-\fR is present the size is increased or decreased
by the quantity \fI<size>\fR.
If no units are specified, the unit of the \fI<size>\fR parameter defaults to
--
1.7.4
--
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