Date: Mon, 12 Oct 2015 13:46:14 +0200 From: Marko =?UTF-8?B?Q3VwYcSH?= <marko.cupac@mimar.rs> To: freebsd-stable@freebsd.org Subject: help with partitioning - huge stripesize Message-ID: <20151012134614.0a95076b@efreet.kappastar.com>
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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, --=20 Before enlightenment - chop wood, draw water. After enlightenment - chop wood, draw water. Marko Cupa=C4=87 https://www.mimar.rs/
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