ZFS Advice

[Wes Morgan]

On Wed, 6 Aug 2008, Adam McDougall wrote:

> Wes Morgan wrote:
>> On Wed, 6 Aug 2008, Peter Schuller wrote:
>> 
>>>> The AoC-SAT2-MV8 is based on the "Marvell Hercules-2 Rev. C0 SATA host
>>>> controller", which seems to be AKA 88SX6081, which is listed as
>>>> supported by the ata driver in 7.0-RELEASE.  Has anyone had any ZFS
>>>> experience with it?
>>> 
>>> Yes; it has been working quite fine for me with 7 up to a 
>>> release-candidate.
>>> In 7.0-RELEASE you must disable the hptrr driver because it eats the 
>>> device.
>>> See:
>>>
>>>   http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/120615
>>>   http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/120842
>>> 
>>> When I say "working fine", this is with 8 SATA drives (6 of them in a 
>>> raidz2,
>>> two of them for other stuff) and not having any issues like corruption,
>>> timeouts or whatever else people have had with shaky controllers.
>>> 
>>> However, I cannot speak to performance because it's a PCI-X card that I've
>>> plugged into a PCI slow, so throughput is limited by the PCI bus (and the
>>> machine is otherwise not the fastest to begin with).
>>> 
>>> Note that this is on 32 bit; haven't been able to try it on 64 bit because 
>>> I
>>> the PCI-X card wouldn't work on the motherboard (again PCI, so it's
>>> hit-and-miss) where I would otherwise have tried it.
>>> 
>>> I'd love to find a buyable PCI-E version that also worked in FreeBSD... 
>>> I'll
>>> see if the link in your post contains any such hints.
>> 
>> Hmmm... That PCI-X card is interesting. Supermicro also lists this:
>> 
>> http://www.supermicro.com/products/accessories/addon/AOC-USAS-L8i.cfm
>> 
>> http://www.lsi.com/storage_home/products_home/standard_product_ics/sas_ics/lsisas1068e/index.html 
>> 
>> Not much onboard ram, but it's PCI-E and even SAS. CDW lists it for $155. 
>> That would be cheaper than buying a new board with a PCI-X slot or two, and 
>> would even handle SAS drives. Claims to be based on the "LSISAS 1068E SAS 
>> controller". Any idea if that is supported? I don't see it listed in the 
>> mfi man page. LSI has a Linux driver for download. That card looks like it 
>> would be just what I need.
>> _______________________________________________
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>> 
> mpt2 at pci0:8:0:0:        class=0x010000 card=0x31501000 chip=0x00581000 
> rev=0x04 hdr=0x00
>   vendor     = 'LSI Logic (Was: Symbios Logic, NCR)'
>   device     = 'SAS 3000 series, 8-port with 1068E -StorPort'
>   class      = mass storage
>   subclass   = SCSI
> mpt2: <LSILogic SAS/SATA Adapter> port 0xa800-0xa8ff mem 
> 0xfcbfc000-0xfcbfffff,0xfcbe0000-0xfcbeffff irq 17 at device 0.0 on pci8
>
> da1 at mpt2 bus 0 target 0 lun 0
> da1: <SEAGATE ST914602SSUN146G 0603> Fixed Direct Access SCSI-5 device
> da1: 300.000MB/s transfers
> da1: Command Queueing Enabled
> da1: 140009MB (286739329 512 byte sectors: 255H 63S/T 17848C)
> da2 at mpt2 bus 0 target 1 lun 0
> da2: <SEAGATE ST914602SSUN146G 0603> Fixed Direct Access SCSI-5 device
> da2: 300.000MB/s transfers
> da2: Command Queueing Enabled
> da2: 140009MB (286739329 512 byte sectors: 255H 63S/T 17848C)
> da3 at mpt2 bus 0 target 2 lun 0
> da3: <SEAGATE ST914602SSUN146G 0603> Fixed Direct Access SCSI-5 device
> da3: 300.000MB/s transfers
> da3: Command Queueing Enabled
> da3: 140009MB (286739329 512 byte sectors: 255H 63S/T 17848C)
> da4 at mpt2 bus 0 target 3 lun 0
> da4: <SEAGATE ST914602SSUN146G 0603> Fixed Direct Access SCSI-5 device
> da4: 300.000MB/s transfers
> da4: Command Queueing Enabled
> da4: 140009MB (286739329 512 byte sectors: 255H 63S/T 17848C)
> da5 at mpt2 bus 0 target 4 lun 0
> da5: <SEAGATE ST914602SSUN146G 0603> Fixed Direct Access SCSI-5 device
> da5: 300.000MB/s transfers
> da5: Command Queueing Enabled
> da5: 140009MB (286739329 512 byte sectors: 255H 63S/T 17848C)
> da6 at mpt2 bus 0 target 5 lun 0
> da6: <SEAGATE ST914602SSUN146G 0603> Fixed Direct Access SCSI-5 device
> da6: 300.000MB/s transfers
> da6: Command Queueing Enabled
> da6: 140009MB (286739329 512 byte sectors: 255H 63S/T 17848C)
> da7 at mpt2 bus 0 target 6 lun 0
> da7: <SEAGATE ST914602SSUN146G 0603> Fixed Direct Access SCSI-5 device
> da7: 300.000MB/s transfers
> da7: Command Queueing Enabled
> da7: 140009MB (286739329 512 byte sectors: 255H 63S/T 17848C)
> da8 at mpt2 bus 0 target 7 lun 0
> da8: <SEAGATE ST914602SSUN146G 0603> Fixed Direct Access SCSI-5 device
> da8: 300.000MB/s transfers
> da8: Command Queueing Enabled
> da8: 140009MB (286739329 512 byte sectors: 255H 63S/T 17848C)


Excellent! How is your experience with the performance and reliability of 
the card?