Re: mpt controller: use it to raid, or use raidframe?

[Ignatios Souvatzis <ignatios%cs.uni-bonn.de@localhost>]

On Tue, Jan 20, 2009 at 06:08:30PM -0500, Thor Lancelot Simon wrote:
> On Fri, Jan 16, 2009 at 01:08:56PM +0100, Ignatios Souvatzis wrote:
> > > 
> > > If this the Sun Fire X4140 I would try RAID 5 in hardware which
> > > is very fast (on the machine at work under Linux) and offers a
> > > lot of disk space.
> > 
> > If this is indeed the case, I can try it in the weekend.
> > Mmmm, ILOM :-)
> 
> This is an LSI controller which does RAID 5 but uses the mpt driver?

I've configured a RAID 1 on disks 4-7, but left 0-3 alone, and NetBSD sees
this:

mpt0 at pci4 dev 0 function 0: vendor 0x1000 product 0x0058
LNEB: Picked IRQ 16 with weight 0
mpt0: interrupting at ioapic0 pin 16
mpt0: Phy 0: Link Rate 3.0 Gbps
mpt0: Phy 1: Link Rate 3.0 Gbps
mpt0: Phy 2: Link Rate 3.0 Gbps
mpt0: Phy 3: Link Rate 3.0 Gbps
mpt0: Phy 4: Link Rate 3.0 Gbps
mpt0: Phy 5: Link Rate 3.0 Gbps
mpt0: Phy 6: Link Rate 3.0 Gbps
mpt0: Phy 7: Link Rate 3.0 Gbps
mpt0: Unknown async event: 0xb
scsibus0 at mpt0: 112 targets, 8 luns per target
sd0 at scsibus0 target 0 lun 0: <SEAGATE, ST914602SSUN146G, 0603> disk fixed
sd0: 136 GB, 14089 cyl, 24 head, 848 sec, 512 bytes/sect x 286739329 sectors
sd1 at scsibus0 target 1 lun 0: <SEAGATE, ST914602SSUN146G, 0603> disk fixed
sd1: 136 GB, 14089 cyl, 24 head, 848 sec, 512 bytes/sect x 286739329 sectors
sd2 at scsibus0 target 2 lun 0: <SEAGATE, ST914602SSUN146G, 0603> disk fixed
sd2: 136 GB, 14089 cyl, 24 head, 848 sec, 512 bytes/sect x 286739329 sectors
sd3 at scsibus0 target 3 lun 0: <SEAGATE, ST914602SSUN146G, 0603> disk fixed
sd3: 136 GB, 14089 cyl, 24 head, 848 sec, 512 bytes/sect x 286739329 sectors
sd4 at scsibus0 target 4 lun 0: <LSILOGIC, Logical Volume, 3000> disk fixed
sd4: 135 GB, 139236 cyl, 16 head, 128 sec, 512 bytes/sect x 285155328 sectors

> That sounds very odd to me.  What I have seen, though, are LSI controllers
> which use mpt if an optional RAID module is not present or not in use, but
> mfi -- the driver for "MegaRAID SAS" -- otherwise.
> The mfi driver has some nasty bugs.

next time I boot I'll watch what the BIOS configuration says.

        -is