Ade Lovett wrote:
On Nov 10, 2005, at 05:30 , Ricardo A. Reis wrote:
Reducing the problem to the relevant pieces:
ahd0: <Adaptec AIC7902 Ultra320 SCSI adapter> port
0x2400-0x24ff,0x2000-0x20ff mem 0xdd200000-0xdd201fff irq 32 at device
2.0 on pci3
ahd0: [GIANT-LOCKED]
aic7902: Ultra320 Wide Channel A, SCSI Id=7, PCI-X 67-100Mhz, 512 SCBs
ahd1: <Adaptec AIC7902 Ultra320 SCSI adapter> port
0x2c00-0x2cff,0x2800-0x28ff mem 0xdd202000-0xdd203fff irq 33 at device
2.1 on pci3
ahd1: [GIANT-LOCKED]
aic7902: Ultra320 Wide Channel B, SCSI Id=7, PCI-X 67-100Mhz, 512 SCBs
[...]
da0 at ahd0 bus 0 target 0 lun 0
da0: <SEAGATE ST373307LC 0006> Fixed Direct Access SCSI-3 device
da0: 320.000MB/s transfers (160.000MHz, offset 63, 16bit), Tagged
Queueing Enabled
da0: 70007MB (143374744 512 byte sectors: 255H 63S/T 8924C)
da1 at ahd0 bus 0 target 1 lun 0
da1: <SEAGATE ST373307LC 0006> Fixed Direct Access SCSI-3 device
da1: 320.000MB/s transfers (160.000MHz, offset 63, 16bit), Tagged
Queueing Enabled
da1: 70007MB (143374744 512 byte sectors: 255H 63S/T 8924C)
Trying to mount root from ufs:/dev/da0s1a
Adaptec HBAs and Seagate drives have a long and intensely painful
history of not working well together. Adaptec blames Seagate. Seagate
blames Adaptec. Throw in the myriad of subtly different AIC controllers
that are commonplace on 1U and 2U rackmount servers, and things get even
more entertaining.
You essentially have 3 options
4 options.
0) Upgrade to Seagate 10K.7 drive firmware level 0008. That seems to
help. One "ahd sequencer error" message still appears at boot, but after
that it seems to work (with your fingers crossed).
-Amit
1) replace the HBA -- somewhat difficult to do if it's embedded and you
need the PCIX slots for something else.
2) replace the drives -- IBM/Hitachi are fine choices here. Make sure
to tell whomever you purchase systems from that you'll not accept
Seagate drives in the future.
3) inside the adaptec bios, drop the drives to U160 speed, making sure
that *both* packetizing *and* QAS are turned OFF. You'll lose a little
bit of performance (but not all that much, Seagate drives really are
garbage), and get some semblance of stability.
-aDe
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