Am Sat 12 Dec 2009 23:38:00 CET schrieb uprooter <uprooter@xxxxxxxxx>:
Hello. I'm struggling a IBM x336 machine with FustionMPT LSI53C1030.
This controller can't do radi0 so I disabled raid in the BIOS.
Problem is that disks are detected wrong and IO is very slow
hdparm -t gives only 37MB/s
dmesg shows that both disks are recognized as FAST-20 while it should be
FAST-160. also cache is disabled.
Well, the cache is easy, it isn't disabled, it's set to read through
(the correct setting for enterprise disks). That's what write
disabled, read enabled means.
I've googled around for hours, saw many problems related to the MPT being
slow when compiled into the kernel in old versions (I have tried module) but
I'm using using 2.6.31.
Here are some logs:
6 23:35:16 localhost kernel: Fusion MPT base driver 3.04.07
6 23:35:16 localhost kernel: Copyright (c) 1999-2008 LSI Corporation
6 23:35:16 localhost kernel: Fusion MPT SPI Host driver 3.04.07
6 23:35:16 localhost kernel: mptspi 0000:04:01.0: PCI INT A -> GSI 28
(level, low) -> IRQ 28
6 23:35:16 localhost kernel: mptbase: ioc0: Initiating bringup
6 23:35:16 localhost kernel: ata1.00: ATAPI: DV-18E, 2.0D, max UDMA/33
6 23:35:16 localhost kernel: ata1.00: configured for UDMA/33
6 23:35:16 localhost kernel: scsi 0:0:0:0: CD-ROM TEAC DV-18E
2.0D PQ: 0 ANSI: 5
6 23:35:16 localhost kernel: sr0: scsi3-mmc drive: 24x/24x cd/rw xa/form2
cdda tray
6 23:35:16 localhost kernel: Uniform CD-ROM driver Revision: 3.20
6 23:35:16 localhost kernel: sr 0:0:0:0: Attached scsi CD-ROM sr0
6 23:35:16 localhost kernel: Switched to high resolution mode on CPU 3
6 23:35:16 localhost kernel: Switched to high resolution mode on CPU 1
6 23:35:16 localhost kernel: Switched to high resolution mode on CPU 2
6 23:35:16 localhost kernel: Switched to high resolution mode on CPU 0
6 23:35:16 localhost kernel: ioc0: LSI53C1030 C0: Capabilities={Initiator}
6 23:35:16 localhost kernel: scsi2 : ioc0: LSI53C1030 C0, FwRev=01032821h,
Ports=1, MaxQ=222, IRQ=28
6 23:35:16 localhost kernel: Fusion MPT FC Host driver 3.04.07
6 23:35:16 localhost kernel: Fusion MPT SAS Host driver 3.04.07
6 23:35:16 localhost kernel: Fusion MPT misc device (ioctl) driver 3.04.07
6 23:35:16 localhost kernel: mptctl: Registered with Fusion MPT base driver
6 23:35:16 localhost kernel: mptctl: /dev/mptctl @ (major,minor=10,220)
6 23:35:16 localhost kernel: Fusion MPT LAN driver 3.04.07
6 23:35:16 localhost kernel: mptlan: ioc0: PortNum=0, ProtocolFlags=08h
(Itlb)
6 23:35:16 localhost kernel: mptlan: ioc0: Hmmm... LAN protocol seems to be
disabled on this adapter port!
....
scsi: waiting for bus probes to complete ...
Nov 26 23:35:16 localhost kernel: scsi 2:0:0:0: Direct-Access IBM
IC35L146UCDY10-0 S27N PQ: 0 ANSI: 3
Nov 26 23:35:16 localhost kernel: target2:0:0: Beginning Domain Validation
Nov 26 23:35:16 localhost kernel: target2:0:0: Domain Validation skipping
write tests
Nov 26 23:35:16 localhost kernel: target2:0:0: Ending Domain Validation
Nov 26 23:35:16 localhost kernel: target2:0:0: FAST-20 WIDE SCSI 40.0 MB/s
ST (50 ns, offset 8)
This is more curious, it seems to indicate that the disk is reporting
its max transfer period as 50ns. Try raising it by echoing 25 to
min_period and then 1 to revalidate to force a renegotiation.
James
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