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--- grow_md_raid1 [2023/09/29 17:56] – created steve
+++ grow_md_raid1 [2024/01/04 14:04] (current) – steve
@@ Line 6: / Line 6: @@
       * <wrap hi>parted --script /dev/sdc "mklabel gpt"</wrap>
       * <wrap hi>parted --script /dev/sdc "mkpart primary 0% 100%"</wrap>
-      * <wrap hi>parted --script /dev/sdc "set 1 raid on" # Repeat for /dev/sdd</wrap>
+      * <wrap hi>parted --script /dev/sdc "set 1 raid on" </wrap>
-  * Added them both to the RAID1:
+      * # Repeat for /dev/sdd
+  * Add them both to the RAID1:
       * <wrap hi>mdadm /dev/md0 --add /dev/sdc1 /dev/sdd1</wrap>
   * Fail one of the old drives:
       * <wrap hi>mdadm /dev/md0 -f /dev/sda1</wrap>
   * Wait for sync to finish:
-      * <wrap hi>watch cat /proc/mdstat</wrap>
+      * <wrap hi>watch -n 60 cat /proc/mdstat</wrap>
   * Fail the other old drive:
       * <wrap hi>mdadm /dev/md0 -f /dev/sdb1</wrap>
   * Wait for sync to finish:
-      * <wrap hi>watch cat /proc/mdstat</wrap>
+      * <wrap hi>watch -n 60 cat /proc/mdstat</wrap>
   * Remove the old drives from the array:
       * <wrap hi>mdadm /dev/md0 -r /dev/sda1 /dev/sdb1</wrap>
@@ Line 22: / Line 23: @@
       * <wrap hi>mdadm --grow /dev/md0 --size max</wrap>
   * Grow the filesystem:
-      * <wrap hi>resize2fs /dev/md0  # Or xfs_growfs, resize2fs, etc...</wrap>
+      * <wrap hi>resize2fs /dev/md0</wrap>
+      * # Or xfs_growfs, resize2fs, etc...
 ..and now I have a 14TB RAID1 instead of the initial 4TB.
+Originally from; [[https://unix.stackexchange.com/questions/665389/mdadm-adding-a-new-hard-disk-to-an-existing-raid1|StackExchange]]