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| Title: | ase |
|
| Moderator: | SMURF::GROSSO |
|
| Created: | Thu Jul 29 1993 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 2114 |
| Total number of notes: | 7347 |
I was wondering if anyone could expand a bit on the various SCSI CAM
discussions that have been weaving their way through this conference.
I understand that the SCSI CAM - Unit reserved is caused by an ase
member on a shared SCSI bus trying to access a device that's reserved
by another machine. What I'm trying to figure out is if there's any
way to narrow the search on the offending machine to a specific process.
The reason I ask is that I have a customer who is seeing about 4000 of
these a day. I had him check for the advfsd and snmp daemons as a possible
source of the attempted accesses, but neither one was configured. he has
a fairly complex mix of processes and such on both machines in the ase
and wants to know how to narrow the problem down a little further.
Here's the hex output from one of the SCSI CAM uerf errors:
----- EVENT INFORMATION -----
EVENT CLASS ERROR EVENT
OS EVENT TYPE 199. CAM SCSI
SEQUENCE NUMBER 62544.
OPERATING SYSTEM DEC OSF/1
OCCURRED/LOGGED ON Tue Mar 18 11:44:22 1997
OCCURRED ON SYSTEM casper
SYSTEM ID x00060009 CPU TYPE: DEC 2100
SYSTYPE x00000000
----- UNIT INFORMATION -----
CLASS x0000 DISK
SUBSYSTEM x0000 DISK
BUS # x0002
x0080 LUN x0
TARGET x0
----- CAM STRING -----
ROUTINE NAME cdisk_op_spin
----- CAM STRING -----
Unit Reserved
----- CAM STRING -----
ERROR TYPE Information Message Detected
_(recovered)
----- CAM STRING -----
DEVICE NAME DEC HSZ4
----- CAM STRING -----
Active CCB at time of error
----- CAM STRING -----
CCB request completed with an error
ERROR - os_std, os_type = 11, std_type = 10
----- ENT_CCB_SCSIIO -----
*MY ADDR x1FE30328
CCB LENGTH x00C0
FUNC CODE x01
CAM_STATUS x0004 CAM_REQ_CMP_ERR
PATH ID 2.
TARGET ID 0.
TARGET LUN 0.
CAM FLAGS x000004C0
CAM_DIR_NONE
CAM_SIM_QFRZDIS
*PDRV_PTR x1FE30028
*NEXT_CCB x00000000
*REQ_MAP x00000000
VOID (*CAM_CBFCNP)() x00478A50
*DATA_PTR x00000000
DXFER_LEN x00000000
*SENSE_PTR x1FE30050
SENSE_LEN xA0
CDB_LEN x06
SGLIST_CNT x0000
CAM_SCSI_STATUS x0018 SCSI_STAT_RESERVATION_CONFLICT
SENSE_RESID x00
RESID x00000000
CAM_CDB_IO x000000000000000000000000
CAM_TIMEOUT x00000014
MSGB_LEN x0000
VU_FLAGS x0000
TAG_ACTION x00
RECORD ENTRY DUMP:
RECORD HEADER
0000: F45002B0 00060009 00060501 332EC666 *..P.........f..3*
0010: 70736163 00007265 00000000 00000000 *casper..........*
0020: 00000001 00000000 000000C7 00800002 *................*
0030: FFFFFFFF 00000000 *........ *
RECORD BODY
0038: 000000C7 00000000 00000000 00000000 *................*
0048: 00000007 00000000 A1216F80 FFFFFFFF *.........o!.....*
0058: 00000005 00000000 00000102 0000000E *................*
0068: 00000010 00000000 00581128 FFFFFC00 *........(.X.....*
0078: 00000001 00000000 73696463 706F5F6B *........cdisk_op*
0088: 6970735F 0000006E 00000100 0000000E *_spin...........*
0098: 00000010 00000000 00581138 FFFFFC00 *........8.X.....*
00A8: 00000001 00000000 74696E55 73655220 *........Unit Res*
00B8: 65767265 00000064 00000106 00000029 *erved.......)...*
00C8: 00000030 00000000 00582AF8 FFFFFC00 *0........*X.....*
00D8: 00000001 00000000 6F666E49 74616D72 *........Informat*
00E8: 206E6F69 7373654D 20656761 65746544 *ion Message Dete*
00F8: 64657463 65722820 65766F63 29646572 *cted (recovered)*
0108: 00000000 00000000 00000101 0000000D *................*
0118: 00000010 00000000 00592780 FFFFFC00 *.........'Y.....*
0128: 00000001 00000000 20434544 20202020 *........DEC *
0138: 345A5348 00000000 00000100 0000001C *HSZ4............*
0148: 00000020 00000000 00582B78 FFFFFC00 * .......x+X.....*
0158: 00000001 00000000 69746341 43206576 *........Active C*
0168: 61204243 69742074 6F20656D 72652066 *CB at time of er*
0178: 00726F72 00000000 00000100 00000024 *ror.........$...*
0188: 00000028 00000000 005806A0 FFFFFC00 *(.........X.....*
0198: 00000001 00000000 20424343 75716572 *........CCB requ*
01A8: 20747365 706D6F63 6574656C 69772064 *est completed wi*
01B8: 61206874 7265206E 00726F72 00000000 *th an error.....*
01C8: 00000001 000000C0 000000C0 00000025 *............%...*
01D8: 1FE30328 FFFFFC00 00000002 00000000 *(...............*
01E8: 1FE30328 FFFFFC00 040100C0 00000200 *(...............*
01F8: 000004C0 00000000 1FE30028 FFFFFC00 *........(.......*
0208: 00000000 00000000 00000000 00000000 *................*
0218: 00478A50 FFFFFC00 00000000 00000000 *P.G.............*
0228: 00000000 00000000 1FE30050 FFFFFC00 *........P.......*
0238: 000006A0 00000000 00000018 00000000 *................*
0248: 00000000 00000000 00000000 00000000 *................*
0258: 00000014 00000000 00000000 00000000 *................*
0268: 00000000 00000000 1FE30018 00000000 *................*
0278: DEC00DEC 00000000 00000000 00000000 *................*
0288: 00000000 00000000 7F8C0140 00A00001 *........@.......*
0298: 00000000 00000000 00000000 00000000 *................*
02A8: 00000000 5E3C7E25 *....%~<^^ *
and here's the -o full output from one:
----- EVENT INFORMATION -----
EVENT CLASS ERROR EVENT
OS EVENT TYPE 199. CAM SCSI
SEQUENCE NUMBER 20862.
OPERATING SYSTEM DEC OSF/1
OCCURRED/LOGGED ON Thu Mar 27 14:44:37 1997
OCCURRED ON SYSTEM kramer
SYSTEM ID x00060009 CPU TYPE: DEC 2100
SYSTYPE x00000000
----- UNIT INFORMATION -----
CLASS x0000 DISK
SUBSYSTEM x0000 DISK
BUS # x0002
x0080 LUN x0
TARGET x0
----- CAM STRING -----
ROUTINE NAME cdisk_op_spin
----- CAM STRING -----
Unit Reserved
----- CAM STRING -----
ERROR TYPE Information Message Detected
_(recovered)
----- CAM STRING -----
DEVICE NAME DEC HSZ4
----- CAM STRING -----
Active CCB at time of error
----- CAM STRING -----
CCB request completed with an error
ERROR - os_std, os_type = 11, std_type = 10
----- ENT_CCB_SCSIIO -----
*MY ADDR x1FE19728
CCB LENGTH x00C0
FUNC CODE x01
CAM_STATUS x0004 CAM_REQ_CMP_ERR
PATH ID 2.
TARGET ID 0.
TARGET LUN 0.
CAM FLAGS x000004C0
CAM_DIR_NONE
CAM_SIM_QFRZDIS
*PDRV_PTR x1FE19428
*NEXT_CCB x00000000
*REQ_MAP x00000000
VOID (*CAM_CBFCNP)() x00478AB0
*DATA_PTR x00000000
DXFER_LEN x00000000
*SENSE_PTR x1FE19450
SENSE_LEN xA0
CDB_LEN x06
SGLIST_CNT x0000
CAM_SCSI_STATUS x0018 SCSI_STAT_RESERVATION_CONFLICT
SENSE_RESID x00
RESID x00000000
CAM_CDB_IO x000000000000000000000000
CAM_TIMEOUT x00000014
MSGB_LEN x0000
VU_FLAGS x0000
TAG_ACTION x00
Is there any way for us mere mortals to look at this and be able to tell
a customer which process might be causing the problem?
thanx.
John McDonald
Atlanta CSC
[Posted by WWW Notes gateway]
| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 1971.1 | | KITCHE::schott | Eric R. Schott USG Product Management | Sat Mar 29 1997 13:49 | 9 |
| You might run trace on the machines on selected processes to see
if you catch who is doing it....I would guess if it is happening
regularly, it is some management application daemon...
you can find trace on:
http://www-unix.zk3.dec.com/tuning/tools/tools.html
|