SCSI: First party detected bus hang Error

[sudhapage]

Hi all,

I am getting SCSI related error in my server.

Error:

SCSI: First party detected bus hang -- lbolt: 31534719, bus: 2
lbp->state: 5020
lbp->offset: 80
lbp->uPhysScript: b00000
From most recent interrupt:
ISTAT: 09, SIST0: 00, SIST1: 00, DSTAT: 84, DSPS: 00000001
lsp: 0000000000000000
lbp->owner: 00000000438fd100
bp->b_dev: 1f020000
scb->io_id: 205b23b
scb->cdb: 2a 00 00 1b 82 44 00 00 04 00
lbolt_at_timeout: 31534619, lbolt_at_start: 31534119
lsp->state: 5
scratch_lsp: 00000000438fd100
Pre-DSP script dump [0000000044042020]:
ffb48810 00b007e8 41000000 00b00290
78347a00 0000000a 78350800 00000000
Script dump [0000000044042040]:
0e000003 00b00540 80000000 00000000
870b0000 00b002d8 0a00000a 00b00548
SCSI: Resetting SCSI -- lbolt: 31534819, bus: 2
SCSI: Reset detected -- lbolt: 31534819, bus: 2

This error indicating any problem?

Please suggest.

Regards,
Sudhakaran.K

[Steven E. Protter]

Shalom,

Yes the error could be serious.

lbolt indicates a bad disk, or scsi routing problem caused by bad cables or other parts failure. Most often its a bad disk.

dmesg -

Wait at least 15 minutes

dmesg

If the message comes back, you will be probably replacing a disk.

SEP

[Sandman!]

Check disk "/dev/dsk/c2t0d0" for problems...may need to be replaced.

[sudhapage]

Hi Steven

In Dmesg, this error is repeating more than 1 month. But everthing is normal.

Hi Sandman

How you are able to tell the problem with /dev/dsk/c2t0d0?

herewith i am sending some outputs......

# ioscan -fnC disk
Class I H/W Path Driver S/W State H/W Type Description
======================================================================
disk 0 8/0.0.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c0t0d0 /dev/rdsk/c0t0d0
disk 1 8/0.1.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c0t1d0 /dev/rdsk/c0t1d0
disk 2 8/0.2.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c0t2d0 /dev/rdsk/c0t2d0
disk 3 8/0.4.0 sdisk CLAIMED DEVICE SEAGATE ST318436LC
/dev/dsk/c0t4d0 /dev/rdsk/c0t4d0
disk 5 8/0.6.0 sdisk CLAIMED DEVICE SEAGATE ST39175LC
/dev/dsk/c0t6d0 /dev/rdsk/c0t6d0
disk 6 8/0.10.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c0t10d0 /dev/rdsk/c0t10d0
disk 7 8/0.11.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c0t11d0 /dev/rdsk/c0t11d0
disk 8 8/0.12.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c0t12d0 /dev/rdsk/c0t12d0
disk 9 8/0.13.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c0t13d0 /dev/rdsk/c0t13d0
disk 10 8/0.14.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c0t14d0 /dev/rdsk/c0t14d0
disk 11 8/4.0.0 sdisk CLAIMED DEVICE IBM DGHS09Y
/dev/dsk/c1t0d0 /dev/rdsk/c1t0d0
disk 12 8/4.1.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c1t1d0 /dev/rdsk/c1t1d0
disk 13 8/4.2.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c1t2d0 /dev/rdsk/c1t2d0
disk 14 8/4.3.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c1t3d0 /dev/rdsk/c1t3d0
disk 15 8/4.11.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c1t11d0 /dev/rdsk/c1t11d0
disk 16 8/4.12.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c1t12d0 /dev/rdsk/c1t12d0
disk 17 8/4.13.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c1t13d0 /dev/rdsk/c1t13d0
disk 18 8/4.14.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c1t14d0 /dev/rdsk/c1t14d0
disk 19 8/8.0.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c2t0d0 /dev/rdsk/c2t0d0
disk 20 8/8.1.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c2t1d0 /dev/rdsk/c2t1d0
disk 21 8/8.2.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c2t2d0 /dev/rdsk/c2t2d0
disk 22 8/8.3.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c2t3d0 /dev/rdsk/c2t3d0
disk 23 8/8.11.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c2t11d0 /dev/rdsk/c2t11d0
disk 24 8/8.12.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c2t12d0 /dev/rdsk/c2t12d0
disk 25 8/8.13.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c2t13d0 /dev/rdsk/c2t13d0
disk 26 8/8.14.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c2t14d0 /dev/rdsk/c2t14d0
disk 27 10/8.1.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c6t1d0 /dev/rdsk/c6t1d0
disk 28 10/8.2.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c6t2d0 /dev/rdsk/c6t2d0
disk 30 10/8.4.0 sdisk CLAIMED DEVICE SEAGATE ST318275LC
/dev/dsk/c6t4d0 /dev/rdsk/c6t4d0
disk 31 10/8.5.0 sdisk CLAIMED DEVICE SEAGATE ST318436LC
/dev/dsk/c6t5d0 /dev/rdsk/c6t5d0
disk 32 10/8.10.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c6t10d0 /dev/rdsk/c6t10d0
disk 33 10/8.11.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c6t11d0 /dev/rdsk/c6t11d0
disk 34 10/8.12.0 sdisk CLAIMED DEVICE SEAGATE ST34371W
/dev/dsk/c6t12d0 /dev/rdsk/c6t12d0
disk 35 10/8.13.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c6t13d0 /dev/rdsk/c6t13d0
disk 36 10/8.14.0 sdisk CLAIMED DEVICE SEAGATE ST34573WC
/dev/dsk/c6t14d0 /dev/rdsk/c6t14d0
disk 37 10/12/5.2.0 sdisk CLAIMED DEVICE TOSHIBA CD-ROM XM-5701
TA
/dev/dsk/c7t2d0 /dev/rdsk/c7t2d0
#

# lvlnboot -v
Boot Definitions for Volume Group /dev/vg01:
Physical Volumes belonging in Root Volume Group:
/dev/dsk/c0t0d0 (8/0.0.0)
/dev/dsk/c0t1d0 (8/0.1.0)
/dev/dsk/c0t2d0 (8/0.2.0)
/dev/dsk/c0t10d0 (8/0.10.0)
/dev/dsk/c0t11d0 (8/0.11.0)
/dev/dsk/c0t12d0 (8/0.12.0)
/dev/dsk/c0t13d0 (8/0.13.0)
/dev/dsk/c0t14d0 (8/0.14.0)
/dev/dsk/c1t1d0 (8/4.1.0)
/dev/dsk/c1t2d0 (8/4.2.0)
/dev/dsk/c1t3d0 (8/4.3.0)
/dev/dsk/c1t11d0 (8/4.11.0)
/dev/dsk/c1t12d0 (8/4.12.0)
/dev/dsk/c1t13d0 (8/4.13.0)
/dev/dsk/c1t14d0 (8/4.14.0)
/dev/dsk/c2t0d0 (8/8.0.0)
/dev/dsk/c2t2d0 (8/8.2.0)
/dev/dsk/c2t3d0 (8/8.3.0)
/dev/dsk/c6t10d0 (10/8.10.0)
/dev/dsk/c6t11d0 (10/8.11.0)
/dev/dsk/c6t12d0 (10/8.12.0)
/dev/dsk/c6t13d0 (10/8.13.0)
/dev/dsk/c6t14d0 (10/8.14.0)
/dev/dsk/c6t1d0 (10/8.1.0)
/dev/dsk/c6t2d0 (10/8.2.0)
/dev/dsk/c2t11d0 (8/8.11.0)
/dev/dsk/c2t12d0 (8/8.12.0)
/dev/dsk/c2t13d0 (8/8.13.0)
/dev/dsk/c2t14d0 (8/8.14.0)
/dev/dsk/c2t1d0 (8/8.1.0)
/dev/dsk/c1t0d0 (8/4.0.0) -- Boot Disk
No Boot Logical Volume configured
No Root Logical Volume configured
No Swap Logical Volume configured
No Dump Logical Volume configured

Boot Definitions for Volume Group /dev/vg00:
Physical Volumes belonging in Root Volume Group:
/dev/dsk/c0t4d0 (8/0.4.0) -- Boot Disk
/dev/dsk/c6t4d0 (10/8.4.0) -- Boot Disk
Boot: lvol1 on: /dev/dsk/c0t4d0
/dev/dsk/c6t4d0
Root: lvol3 on: /dev/dsk/c0t4d0
/dev/dsk/c6t4d0
Swap: lvol2 on: /dev/dsk/c0t4d0
Dump: lvol2 on: /dev/dsk/c0t4d0, 0

# pvdisplay /dev/dsk/c2t0d0
--- Physical volumes ---
PV Name /dev/dsk/c2t0d0
VG Name /dev/vg01
PV Status available
Allocatable yes
VGDA 2
Cur LV 2
PE Size (Mbytes) 16
Total PE 255
Free PE 1
Allocated PE 254
Stale PE 0
IO Timeout (Seconds) default
Autoswitch On

# strings /etc/lvmtab
/dev/vg01
ok^;A
/dev/dsk/c0t0d0
/dev/dsk/c0t1d0
/dev/dsk/c0t2d0
/dev/dsk/c0t10d0
/dev/dsk/c0t11d0
/dev/dsk/c0t12d0
/dev/dsk/c0t13d0
/dev/dsk/c0t14d0
/dev/dsk/c1t1d0
/dev/dsk/c1t2d0
/dev/dsk/c1t3d0
/dev/dsk/c1t11d0
/dev/dsk/c1t12d0
/dev/dsk/c1t13d0
/dev/dsk/c1t14d0
/dev/dsk/c2t0d0
/dev/dsk/c2t2d0
/dev/dsk/c2t3d0
/dev/dsk/c6t10d0
/dev/dsk/c6t11d0
/dev/dsk/c6t12d0
/dev/dsk/c6t13d0
/dev/dsk/c6t14d0
/dev/dsk/c6t1d0
/dev/dsk/c6t2d0
/dev/dsk/c2t11d0
/dev/dsk/c2t12d0
/dev/dsk/c2t13d0
/dev/dsk/c2t14d0
/dev/dsk/c2t1d0
/dev/dsk/c1t0d0
/dev/vg00
ok^;A
/dev/dsk/c0t4d0
/dev/dsk/c6t4d0


If you want some more outputs also i will send it to you. Kindly suggest.

[SVB]

the "bp->b_dev: 1f020000" points to c2t0d0 (02-00-00)

Do you have any EMS messages in your syslog?

Also try a diskinfo -v /dev/rdsk/c2t0d0 and post the output.

[Annelise Wilken]

Hi Sudhakaran,

Whenever I've seen lbolt messages I've always had to replace a disk - even though I've checked all logical volumes etc for stale extents and done the regular disk checking stuff - invariably I've not found any errors - so I raised a call with HP and sent them various stm info files and they came and replaced a disk .... everytime! Raise a support call and get the disk swapped.