Date: Wed, 5 Aug 1998 00:51:14 +0200 (MET DST) From: Willem Jan Withagen <wjw@surf.IAE.nl> To: scsi@FreeBSD.ORG Subject: Do AHC and LUN's have a problem Message-ID: <199808042251.AAA19913@surf.IAE.nl>
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Hi,
We've got this Hardware RAID controller which gives out different RAID on
different LUN's. So I've added the following to our scsiconf.c:
{
T_DIRECT, T_FIXED, T_FIXED, "DTC", "DTC-*" , "*",
"sd", SC_MORE_LUS
},
Hoping that this is the correct incantation of the magic. Especially the
T_* stuff was not all to clear to me.
Dmesg says:
spocky /kernel: ahc0 <Adaptec 2940 Ultra SCSI host adapter> rev 0 int a irq 11 on pci0:10:0
spocky /kernel: ahc0: aic7880 Wide Channel, SCSI Id=7, 16 SCBs
spocky /kernel: (ahc0:2:0): "DTC DTC-8230 0122" type 0 fixed SCSI 2
spocky /kernel: sd0(ahc0:2:0): Direct-Access 20671MB (42335040 512 byte sectors)
spocky /kernel: (ahc0:2:1): "DTC DTC-8230 0122" type 0 fixed SCSI 2
spocky /kernel: sd1(ahc0:2:1): Direct-Access 20000MB (40960000 512 byte sectors)
Problem now is that this RAIDcontroller has worked flawless until I switched
on Multiple LUN's. And even then it only starts trouble when I start using
the second LUN. As long as I'm only using the first LUN (0) everything is
happy.
BUT as soon as I start using the second disk, be it for swap, or run fsck
Ik getting hit by this continuous stream of:
spocky /kernel: sd0(ahc0:2:0): SCB 0x3 - timed out while idle, LASTPHASE == 0x1, SCSISIGI == 0xe6
spocky /kernel: SEQADDR = 0x4 SCSISEQ = 0x12 SSTAT0 = 0x27 SSTAT 1 = 0xb
spocky /kernel: sd0(ahc0:2:0): SCB 3: Immediate reset. Flags = 0x1
spocky /kernel: sd0(ahc0:2:0): no longer in timeout
spocky /kernel: ahc0: Issued Channel A Bus Reset. 2 SCBs aborted
spocky /kernel: sd1(ahc0:2:1): UNIT ATTENTION asc:29,0
spocky /kernel: sd1(ahc0:2:1): Power on, reset, or bus device reset occurred
spocky /kernel: , retries:3
spocky /kernel: sd0(ahc0:2:0): UNIT ATTENTION asc:29,0
spocky /kernel: sd0(ahc0:2:0): Power on, reset, or bus device reset occurred
spocky /kernel: , retries:3
This time I don't think it has to do with the termination.
It occurs on both 10Mhz and 5 Mhz, and the most significant issue agains
termination is that I have to start using the second LUN.
Connection between the AHC and the box is an external cable with termination
done by "the box" and the AHC
Now this could be the RAID controller. But it could also be the AHC driver.
This system still runs source straight from the 2.2.6 CD.
Is any of the above fixed by going to the most recent -stable?
Or are there other things to look at? Getting another controller is sort of
hard, but if really pressed it might be possible.
--WjW
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