I have a raid array that is currently formatted as XFS. I want to wipe the contents and switch to Ext4. From my googling, Ext4 on RAID needs stride and stripe-width options to be specified. But I cannot find any documentation showing how one finds these values for a given virtual drive.
Hoping somebody here knows where one can find the numbers to plug into an mkfs.ext4 command.
My controller is a Dell PERC H380 running in RAID 5.
TL;DR You have to calculate it based on your setup.
It says I need the “chunk size” of the RAID array. Where would I find that?
Can you get into the computer’s idrac? If so you’ll be able to look up how the raid was constructed under Storage>Virtual Disks
Alternatively you could get into the PERC BIOS to find the information when the computer is posting (Ctrl+R).
That shows the stripe element size. But I need something called “chunk size” according to the Ext4 mam page.
They should be the same thing; I know terminology can vary from place to place but I’ve come to the belief that:
stripe element size = strip size = chunk size
Distinct from stripe size, which is all the data carrying disks elements added up.
Okay. It seems most of my confusion here comes from different manuals and utilities using differing terminologies. Thank you.
