Re: odd dmesg scsi error with aic7902 controller

On Thu, 2004-03-18 at 17:41, Sven Willenberger wrote:
> Have just moved to supermicro 1U boxes using 80-pin SCA drives (Seagate
> ST336607LC) and U320 adaptec on-board controllers (aic7902) and the 
> error shown in the dmesg below crops up during bootup.
> 
> The odd thing is that it only occurs if 2 or more drives are connected;
> if only 1 drive is physically attached, the boot up sequence is smooth.
> These boxes are not yet in production and I hesitate to do so if the
> error message is an indication of future problems. This same message
> does occur in FreeBSD 4.9-Release also. The following dmesg snippet
> comes from a 5.2.1-Release system:
> 
> .
> Waiting 15 seconds for SCSI devices to settle
> ahd0: Invalid Sequencer interrupt occurred.
> >>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<<
> ahd0: Dumping Card State at program address 0x216 Mode 0x0
> Card was paused
> HS_MAILBOX[0x0] INTCTL[0x80]:(SWTMINTMASK) SEQINTSTAT[0x0]
> SAVED_MODE[0x11] DFFSTAT[0x33]:(CURRFIFO_NONE|FIFO0FREE|FIFO1FREE)
> SCSISIGI[0x0]:(P_DATAOUT) SCSIPHASE[0x0] SCSIBUS[0x0]
> LASTPHASE[0x1]:(P_DATAOUT|P_BUSFREE) SCSISEQ0[0x0]
> SCSISEQ1[0x12]:(ENAUTOATNP|ENRSELI) SEQCTL0[0x0]
> SEQINTCTL[0x6]:(INTMASK1|INTMASK2)
> SEQ_FLAGS[0x0] SEQ_FLAGS2[0x0] SSTAT0[0x0] SSTAT1[0x0]
> SSTAT2[0x0] SSTAT3[0x0] PERRDIAG[0x0]
> SIMODE1[0xa4]:(ENSCSIPERR|ENSCSIRST|ENSELTIMO)
> LQISTAT0[0x0] LQISTAT1[0x0] LQISTAT2[0x0] LQOSTAT0[0x0]
> LQOSTAT1[0x0] LQOSTAT2[0x0]
> 
> SCB Count = 16 CMDS_PENDING = 0 LASTSCB 0xffff CURRSCB 0x9 NEXTSCB
> 0xff80
> qinstart = 38 qinfifonext = 41
> QINFIFO: 0xe 0x9 0xf
> WAITING_TID_QUEUES:
> Pending list:
>  15 FIFO_USE[0x0] SCB_CONTROL[0x40]:(DISCENB) SCB_SCSIID[0x17]
>   9 FIFO_USE[0x0] SCB_CONTROL[0x40]:(DISCENB) SCB_SCSIID[0x7]
>  14 FIFO_USE[0x0] SCB_CONTROL[0x48]:(STATUS_RCVD|DISCENB)
> SCB_SCSIID[0x7]
> Total 3
> Kernel Free SCB list: 1 2 3 4 5 6 7 8 10 11 12 13 0
> Sequencer Complete DMA-inprog list:
> Sequencer Complete list:
> Sequencer DMA-Up and Complete list:
> 
> ahd0: FIFO0 Free, LONGJMP == 0x8000, SCB 0xf
> SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS)
> SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
> SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
> SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
> HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
> ahd0: FIFO1 Free, LONGJMP == 0x8063, SCB 0x9
> SEQIMODE[0x3f]:(ENCFG4TCMD|ENCFG4ICMD|ENCFG4TSTAT|ENCFG4ISTAT|ENCFG4DATA|ENSAVEPTRS)
> SEQINTSRC[0x0] DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
> SG_CACHE_SHADOW[0x2]:(LAST_SEG) SG_STATE[0x0] DFFSXFRCTL[0x0]
> SOFFCNT[0x0] MDFFSTAT[0x5]:(FIFOFREE|DLZERO) SHADDR = 0x00, SHCNT = 0x0
> HADDR = 0x00, HCNT = 0x0 CCSGCTL[0x10]:(SG_CACHE_AVAIL)
> LQIN: 0x8 0x0 0x0 0xf 0x0 0x1 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
> 0x0 0x0 0x0 0x0
> ahd0: LQISTATE = 0x0, LQOSTATE = 0x0, OPTIONMODE = 0x52
> ahd0: OS_SPACE_CNT = 0x20 MAXCMDCNT = 0x1
> 
> SIMODE0[0xc]:(ENOVERRUN|ENIOERR)
> CCSCBCTL[0x4]:(CCSCBDIR)
> ahd0: REG0 == 0xb660, SINDEX = 0x10e, DINDEX = 0x104
> ahd0: SCBPTR == 0xf, SCB_NEXT == 0xff80, SCB_NEXT2 == 0xffc8
> CDB 12 20 0 80 88 a6
> STACK: 0x211 0x2 0x0 0x0 0x0 0x0 0x0 0x0
> >>>>>>>>>>>>>>>>>
> ses0 at ahd0 bus 0 target 6 lun 0
> ses0: <SUPER GEM318 0> Fixed Processor SCSI-2 device
> ses0: 3.300MB/s transfers
> ses0: SAF-TE Compliant Device
> GEOM: create disk da0 dp=0xc86c8850
> GEOM: create disk da1 dp=0xc86cd050
> Copied 18 bytes of sense data offset 12: 0x70 0x0 0x6 0x0 0x0 0x0 0x0
> 0xa 0x0 0x0 0x0 0x0 0x29 0x2 0x2 0x0 0x0 0x0
> SMP: AP CPU #2 Launched!
> SMP: AP CPU #1 Launched!
> SMP: AP CPU #3 Launched!
> Copied 18 bytes of sense data offset 12: 0x70 0x0 0x6 0x0 0x0 0x0 0x0
> 0xa 0x0 0x0 0x0 0x0 0x29 0x2 0x2 0x0 0x0 0x0
> da0 at ahd0 bus 0 target 0 lun 0
> da0: <SEAGATE ST336607LC 0007> Fixed Direct Access SCSI-3 device
> da0: 320.000MB/s transfers (160.000MHz, offset 63, 16bit), Tagged
> Queueing Enabled
> da0: 35003MB (71687372 512 byte sectors: 255H 63S/T 4462C)
> da1 at ahd0 bus 0 target 1 lun 0
> da1: <SEAGATE ST336607LC 0007> Fixed Direct Access SCSI-3 device
> da1: 320.000MB/s transfers (160.000MHz, offset 63, 16bit), Tagged
> Queueing Enabled
> da1: 35003MB (71687372 512 byte sectors: 255H 63S/T 4462C)
> 
As a followup to this issue, I have been in contact with Seagate
regarding this issue. Their recommendations were to check for IRQ
conflicts, bad cabling, disabling SMP (not!) etc. Installing IBM/Hitachi
U320 drives does not result in this boot up message so I believe that
the suggestions listed are not the culprit. This would leave possibly
the scsi probe function as having a timing(?) issue or some
incompatibility issues between Seagate and Supermicro. All firmware/bios
were as up to date as is possible. I have not had the wherewithal to see
if the Seagate drives actually suffer during normal use on these systems
as I am reluctant to put any real workload (read "production") on them.

Barring any further investigation, I would recommend the fix to the
Seagate issue is to use drives other than Seagate with this particular
hardware setup (as I have had a few off-list responses from others with
similar problems).

Sven