We provided format <path>|<device> in command line. But btrfs device stats doesn't work if device is not mounted.
Also fix some tailing whitespace. Signed-off-by: Chen Hanxiao <chenhanx...@cn.fujitsu.com> --- Documentation/btrfs-device.txt | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/Documentation/btrfs-device.txt b/Documentation/btrfs-device.txt index 66be6b3..3868fd4 100644 --- a/Documentation/btrfs-device.txt +++ b/Documentation/btrfs-device.txt @@ -83,14 +83,14 @@ Check device to see if it has all of it's devices in cache for mounting. *scan* [(--all-devices|-d)|<device> [<device>...]]:: Scan devices for a btrfs filesystem. + -If one or more devices are passed, these are scanned for a btrfs filesystem. +If one or more devices are passed, these are scanned for a btrfs filesystem. If no devices are passed, btrfs uses block devices containing btrfs filesystem as listed by blkid. -Finally, if '--all-devices' or '-d' is passed, all the devices under /dev are +Finally, if '--all-devices' or '-d' is passed, all the devices under /dev are scanned. *stats* [-z] <path>|<device>:: -Read and print the device IO stats for all devices of the filesystem +Read and print the device IO stats for all mounted devices of the filesystem identified by <path> or for a single <device>. + `Options` -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
