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--- computing:storage:linux_software_raid [2012/05/21 12:53]
gcooper
+++ computing:storage:linux_software_raid [2019/10/25 10:42] (current)
gcooper
@@ Line 16: / Line 16: @@
 <file>
-mdadm --detail --scan
+mdadm --detail --scan --verbose
 </file>
@@ Line 22: / Line 22: @@
 <file>
-fdisk /dev/sda
+fdisk -l /dev/sda
 </file>
+or
+<file>
+sgdisk -p /dev/sda
+</file>
+**Copy Patition Scheme**: https://askubuntu.com/questions/57908/how-can-i-quickly-copy-a-gpt-partition-scheme-from-one-hard-drive-to-another/333923
+:!: Verify ''sfdisk'' recognizes your source partitions.  If not, try ''sgdisk''.
 Using fdisk, create matching partitions on various drives (block devices) of type **fd  Linux raid autodetect** that will be assembled into arrays.
@@ Line 39: / Line 49: @@
 </file>
-Once you partition the first drive, use sfdisk to duplicate partitions from that first drive to other drives:
+:!: Be careful not to write to the **wrong disk** or you will have a **very bad day**!
+Once you partition the first drive, use ''sfdisk'' or ''sgdisk'' to replicate partitions from that first drive to other drives:
+<file>
+sfdisk -d /dev/sda | sfdisk /dev/sdb
+</file>
+or
 <file>
-sfdisk -d /dev/sda | sfdisk /dev/sd[bcd]
+sgdisk /dev/sda -R /dev/sdb
+sgdisk -G /dev/sdb
 </file>
@@ Line 66: / Line 85: @@
 <file>
-mdadm --detail --scan
+mdadm --detail --scan --verbose
 mdadm --add /dev/md0 /dev/sdb1

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