As you say using RAID for ZFS is a bad idea, so ideally change the hardware.
If not see if your RAID controller has a stripe size option to help or
just ignore the warning, its just a warning as it will be non-optimal
performance.
On 12/10/2015 12:46, Marko Cupać wrote:
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,
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