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Re: Promise Supertrak 8350

On Fri, May 11, 2007 at 10:18:09AM -0500, debisp2007@braingia.org wrote:
> Has anyone had any luck (good or bad) with the Promise Supertrak 8350
> specifically related to an Etch install?  I can't seem to get the
> installer to recognize the disks as being in an array.
> The SATA site at linuxmafia seems to think that this
> card should/might be supported generally for Linux:
> http://linuxmafia.com/faq/Hardware/sata.html

that page[1] says the Promise 8350 is a real hardware raid card, and that it
might use the Marvell driver[2].

[1] http://linuxmafia.com/faq/Hardware/sata.html#promise-ex8300

  "(link) Promise SuperTrak EX8300 8-port SATA-II PCI-X card and
   SuperTrak EX8350 8-port SATA-II PCI Express card \u2014 real
   hardware RAID(?). Uses Intel IOP331 I/O processor (XScale family)
   and Marvell 88SX6081 SATA chipset.  Press releases says there's a
   "full open source Linux driver" \u2014 which might be the Marvell
   driver(?). EX8500 card was demoed on 2005-08-23."

oddly, the info on the Marvell driver says that it is fakeraid - i.e. not
hardware raid at all, just software raid with minimal support in the card.
you're better off using linux software raid than fakeraid, even if it does
happen to be directly supported with a linux driver.

[2] http://linuxmafia.com/faq/Hardware/sata.html#marvell

  "(link) Marvell Technology Group Ltd. 88SX7xxx, 88SX6xxx ("Hercules
   II") and 88SX5xxx/88SX48 ("Hercules I") chip series chips \u2014
   fakeraid. The 88SX50xx series supports TCQ, but not NCQ or port
   multipliers. The 88SX60x1 series supports TCQ, NCQ, and port
   multipliers. libata driver "sata_mv" became available 2005-06 (beta
   quality as of 2007-02).

   For Marvell chipsets 88SX5040, 88SX5041, 88SX5080, and 88SX5081
   "Hercules I" (all SATA-I); and 88SX6041 4-port & 88SX6081 8-port
   "Hercules II" (both SATA-II), there is a "mvSata" driver from Marvell
   International Ltd. Like Garzik's libata "sata_mv" driver, Marvell's
   "mvSata" driver uses the kernel's SCSI layers.

   As of May 2005's v. 3.4.1, that driver changed from proprietary
   licensing to GPLv2; probably the best revised source code is now
   Carlos Vidal's file tree, which also has precompiled kernels for
   Fedora Core and a HOWTO that should generalise well to other
   distributions. A patch may be necessary to run this driver properly
   on newer 2.6 kernels.

   Supermicro's ftp site offers proprietary drivers for Marvell 4-port
   and 8-part SATA chips, written by Adaptec."

if i had to bet, i'd bet that the info about the marvell driver is correct
while the info about the card is wrong.  i.e. it's fakeraid.

> I've poked around looking for updated docs on how to build a custom
> boot/install CD for etch but everything I've seen appears pretty much
> tailored to Sarge and even Woody.
> Any pointers to help get this card working would be appreciated.

two suggestions:

1. throw away the card and get a real hardware raid card. adaptec 2820
or 3ware or something. that page has a pretty good explanation of the
difference and a list of real hardware raid cards supported by linux.

2. use linux software raid.  the debian install disks can handle this.


craig sanders <cas@taz.net.au>

BOFH excuse #123:

user to computer ratio too high.

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