Differences

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--- raid [2009/09/30 06:43] – 172.26.0.166
+++ raid [2009/11/02 14:20] – 172.26.0.166
@@ Line 8: / Line 8: @@
   * Rows 0 - 2 are SATA, connected to the hardware 3ware RAID card
   * Row 3 are IDE
 ===== Software RAID =====
 The Linux kernel has the ''md'' (mirrored devices) driver for software RAID devices.  There are currently two 80 GB IDE hard drives connected to the server, ''/dev/hda'' and ''/dev/hdd''.  These were set up as five RAID devices during the install of Rocks/CentOS.
@@ Line 50: / Line 49: @@
 unused devices: <none></code>
+==== Repair RAID ====
+Setting a disk faulty/failed:
+# mdadm --fail /dev/md0 /dev/hdc1
+DO NOT run this every on a raid0 or linear device or your data is toasted!
+Removing a faulty disk from an array:
+# mdadm --remove /dev/md0 /dev/hdc1
+Clearing any previous raid info on a disk (eg. reusing a disk from another decommissioned raid array)
+# mdadm --zero-superblock /dev/hdc1
+Adding a disk to an array
+# mdadm --add /dev/md0 /dev/hdc1
 === To Do list: ===
@@ Line 84: / Line 102: @@
   * Which port is inactive or missing? (p1, p5, etc)
-<note important>The controller supports hot swapping but you **must** remove a faulty drive through the ''tw_cli'' tool before you can swap drives.</note>
+<note warning>The controller supports hot swapping but you **must** remove a faulty drive through the ''tw_cli'' tool before you can swap drives.</note>
 Remove the faulty port: