Rewrote the whole website to get rid on a heavy theme

content/blog/commands/mdadm.md

@@ -0,0 +1,42 @@
+---
+title: "mdadm"
+linkTitle: "mdadm"
+date: 2011-11-15
+description: >
+  mdadm
+---
+
+## Watch the array status
+
+{{< highlight sh >}}
+watch -d -n10 mdadm --detail /dev/md127
+{{< /highlight >}}
+
+## Recovery from livecd
+
+{{< highlight sh >}}
+mdadm --examine --scan >> /etc/mdadm.conf
+mdadm --assemble --scan /dev/md/root
+mount /dev/md127 /mnt  # or vgscan...
+{{< /highlight >}}
+
+If auto detection does not work, you can still assemble an array manually :
+{{< highlight sh >}}
+mdadm --assemble /dev/md0 /dev/sda1 /dev/sdb1 
+{{< /highlight >}}
+
+## Resync an array
+
+First rigorously check the output of `cat /proc/mdstat`
+{{< highlight sh >}}
+mdadm --manage --re-add /dev/md0 /dev/sdb1
+{{< /highlight >}}
+
+## Destroy an array
+
+{{< highlight sh >}}
+mdadm --stop /dev/md0
+mdadm --zero-superblock /dev/sda
+mdadm --zero-superblock /dev/sdb
+{{< /highlight >}}
+