help with partitioning - huge stripesize

[Marko Cupać]

Hi,

I've got HP ProLiant DL320g5p server with HP Smart Array E200 RAID
controller and 4X300Gb SAS disks.

I'd like to use it for hosting jails on ZFS, but no matter how I create
zpool, I always get a warning about non-native block size:

block size: 8192B configured, 1048576B native

I know it is optimal for ZFS to have direct access to disks, but HP
Smart Array E200 apparently does not support JBOD mode. I tried to
configure both single RAID-5 logical volume and four RAID-0
logical volumes, in both cases diskinfo gives me the following:

	512         	# sectorsize
	299966445568	# mediasize in bytes (279G)
	585871964   	# mediasize in sectors
	1048576     	# stripesize
	643072      	# stripeoffset
	71798       	# Cylinders according to firmware.
	255         	# Heads according to firmware.
	32          	# Sectors according to firmware.
	PA6C90R9SXK07P	# Disk ident.

With hardware I have, is it better to create single RAID-5 logical
volume in HP Smart Array E200 and let ZFS think it deals with single
physical drive, or four  RAID-0 logical volumes and let ZFS think it
deals with four physical drives?

Can I just ignore warning about non-native block size? If not, how can
I make it go away?

Thank you in advance,
-- 
Before enlightenment - chop wood, draw water.
After  enlightenment - chop wood, draw water.

Marko Cupać
https://www.mimar.rs/