View source for Configuring Ext4 Storage Pool with correct Disk Alignment

== Calculating the Stride and Stripe-width ==
* '''''Ext4 Block Size''''' = default 4KiB (not needed to change this value)
* '''''Stride''''' = RAID Chunk Size / Ext4 Block Size (Chunk Size also known as Stripe Size)
* '''''Stripe-width''''' = Number of physical data disks * Stride
=== Examples ===
==== '''RAID 0:''' 2 Disks & Stripe Size - 64 KiB ==== 
:* Ext4 BS = 4KiB
:* Stride = 64 KiB / 4KiB = 16
:* Stripe-width = 2 * 16 = 32
 mkfs.ext4 -b 4096 -E stride=16,stripe-width=32 <dev>
 # or simply:
 mkfs.ext4 -E stride=16,stripe-width=32 <dev>

====  '''RAID 1:''' 2 Disks & Stripe Size - 128 KiB ==== 
:* Ext4 BS = 4KiB
:* Stride = 128 KiB / 4KiB = 32
:* Stripe-width = 1 * 32 = 32
 mkfs.ext4 -b 4096 -E stride=32,stripe-width=32 <dev>
 # or simply:
 mkfs.ext4 -E stride=32,stripe-width=32 <dev>

===='''RAID 5:''' 4 Disks & Stripe Size - 512 KiB ====
:* Ext4 BS = 4KiB
:* Stride = 512 KiB / 4KiB = 128
:* Stripe-width = 3 * 128 = 384
 mkfs.ext4 -b 4096 -E stride=128,stripe-width=384 <dev>
 # or simply:
 mkfs.ext4 -E stride=128,stripe-width=384 <dev>

==== '''RAID 6:''' 10 Disks & Stripe Size - 1 MiB ====
:* Ext4 BS = 4KiB
:* Stride = 1024 KiB / 4KiB = 256
:* Stripe-width = 8 * 256 = 2048  
 mkfs.ext4 -b 4096 -E stride=256,stripe-width=2048 <dev>
 # or simply:
 mkfs.ext4 -E stride=256,stripe-width=2048 <dev>