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Subject: Re: Controller for ZFS
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From: Borja Marcos <borjam@sarenet.es>
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Date: Thu, 14 Nov 2013 13:26:08 +0100
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To: Tom Evans <tevans.uk@googlemail.com>
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On Nov 14, 2013, at 12:56 PM, Tom Evans wrote:

>> The only problem: beware if you are using a built-in backplane in the =
server, some manufacturers insist on using different
>> cabling schemes for different controllers and you could run into =
stupid problems because of that.
>>=20
>> FreeBSD 10 identifies one of my cards as this one:
>> mps0: <LSI SAS2008> port 0x7c00-0x7cff mem =
0xd4ff0000-0xd4ffffff,0xd4f80000-0xd4fbffff irq 80 at device 0.0 on =
pci67
>> mps0: Firmware: 07.15.08.00, Driver: 16.00.00.00-fbsd
>=20
> This is quite old firmware, do you not have problems with this
> (particularly large drives or SSDs)? I believe I am using 15, and the
> latest is 16.

No problems so far,

2013-08-12.13:02:13 zpool create cashopul raidz /dev/da0.nop =
/dev/da1.nop /dev/da2.nop /dev/da3.nop /dev/da4.nop /dev/da5.nop


borjam@pruebassd:/home/borjam % zpool status cashopul
  pool: cashopul
 state: ONLINE
  scan: scrub repaired 0 in 0h3m with 0 errors on Fri Sep 20 07:05:42 =
2013
config:

	NAME        STATE     READ WRITE CKSUM
	cashopul    ONLINE       0     0     0
	  raidz1-0  ONLINE       0     0     0
	    da0     ONLINE       0     0     0
	    da1     ONLINE       0     0     0
	    da2     ONLINE       0     0     0
	    da3     ONLINE       0     0     0
	    da4     ONLINE       0     0     0
	    da5     ONLINE       0     0     0

errors: No known data errors


Even though the disks are OCZ Vertex 4's

root@pruebassd:/home/borjam # camcontrol devlist
<DP BP12G+ 1.00>                   at scbus0 target 3 lun 0 (pass0,ses0)
<ATA OCZ-VERTEX4 1.5>              at scbus0 target 4 lun 0 (pass1,da0)
<ATA OCZ-VERTEX4 1.5>              at scbus0 target 5 lun 0 (pass2,da1)
<ATA OCZ-VERTEX4 1.5>              at scbus0 target 7 lun 0 (pass3,da2)
<ATA OCZ-VERTEX4 1.5>              at scbus0 target 9 lun 0 (pass4,da3)
<ATA OCZ-VERTEX4 1.5>              at scbus0 target 10 lun 0 (pass5,da4)
<ATA OCZ-VERTEX4 1.5>              at scbus0 target 11 lun 0 (pass6,da5)


Of course, the slots assignment in the backplane becomes random.=20

Do you recommend more recent firmware versions, though? I was playing =
with this for a while and it really
was tiresome to be loading different firmware versions.

Thanks,




Borja.