Btrfs commands + theme update

content/post/btrfs-commands/index.md

@@ -1,14 +1,31 @@
-+++
-title = "brtfs - Helpful commands"
-date = 2020-09-03T00:00:00
-+++
+---
+title: "Btrfs - Helpful commands"
+date: 2020-09-03T00:00:00
+subtitle: "Useful commands for the btrfs file system"
+summary: "Useful commands for the btrfs file system"
+---
+
+Quick collection of useful commands for maintaining a btrfs filesystem.
+
+Btrfs allows for easy management of software raids in RAID0, RAID1 and RAID10. RAID5 and RAID6 are implemented but not suggested for use. 
 
-Quick collection of useful commands for maintaining a btrfs filesystem
 
 {{% alert note %}}
 Btrfs (pronounced as "butter fuss", "better F S", "butter F S", "b-tree F S", or simply by spelling it out) is a file system based on the copy-on-write (COW) principle, initially designed at Oracle Corporation for use in Linux. The development of Btrfs began in 2007, and since August 2014 the file system's on-disk format has been marked as stable.[13]
 {{% /alert %}}
 
+## btrfs device statistics
+The btrfs device commands are used to check the status of the device, such as read / write errors and disk usage.
+See the current statistic. 
+```shell
+sudo btrfs device stats /path/to/fs
+```
+
+To see the current usage. 
+```shell
+sudo btrfs device usage /path/to/fs
+```
+
 ## btrfs scrub
 btrfs scrub is used to scrub a btrfs filesystem, which will read all data and metadata blocks from all devices and verify checksums. Automatically repair corrupted blocks if there’s a correct copy available.