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Conference ssdevo::hsz40_product

Title:HSZ40 Product Conference
Moderator:SSDEVO::EDMONDS
Created:Mon Apr 11 1994
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:902
Total number of notes:3319

798.0. "Overlapped commands attempted on HSZ40 based mirror set" by KERNEL::BROOKER () Thu Mar 06 1997 15:47

Customer has on-going problems with hangs and crashes.  I entered the fray
shortly after a KZPAA was swapped (I don't know the reasoning behind this).

The system consists of a two Alphaserver2000 systems in a scsi cluster running
6.2 patched with ALPSCSI02_070.  In the middle is a dual redundant pair of
HSZ40's running V27Z.  Yesterday one of the systems crashed with an INCONSTATE
FBC (at SYS$DKDRIVER+10F0).  I could find no known probs that matched the
symptoms for this crash but one of the disk units, DKB101 had logged 57 errors
(all exactly the same) at the time of the crash.  The unit is a Mirror set of
two RZ26L drives.  I pulled a binary of the errors downline and put them through

SWEAT X3.0 and got the following error (see below).  The only other mention of
the "Overlapped commands attempted" error (ASC = 4E, ASCQ = 00) was in ASK_SSAG
note 4711 but that doesn't seem to apply here.  Since I have the patch installed

which fixes the problem of missing extended sense data I have concluded (with
Chris Loanes help) that this error was returned from the controller and not the
unit, since there is no extended sense detailing which specific physical drive
had suffered the problem.

As usual, all/any help gratefully accepted.

** X3.0 ******************** Entry        1 ********************************
 ERROR SEQUENCE 28114.                       Logged On: SID 00000467
 Date/Time  5-MAR-1997 15:50:49.90                         Sys_Type 00000009
 SCS Node:  TOM      AlphaServer 2000 4/275
 Device Error Entry
 I/O Sub-System, Unit TOM$DKB101
        UCB$L_ERTCNT          00000010
        UCB$L_ERTMAX          00000010
        CDRP$Q_IOSB           00000000
                              00000000
                                        %NONAME-W-NOMSG, Message number 00000000

        UCB$L_STS             08021810
                                        Online
                                        Software Valid
                                        Unload At Dismount
        UCB$B_DEVCLASS              01
        UCB$B_DEVTYPE               99
        CDRP$L_PID            0031008D
        CDRP$L_BOFF           00000400
        CDRP$L_BCNT           00000200
        CDRP$L_MEDIA          0005198B
        UCB$L_ERRCNT          00000001
        UCB$L_OPCNT           001247B4
        ORB$L_OWNER           00010004
        UCB$L_CHAR            1C4D4008
                                        Directory Structured
                                        File Oriented
                                        Sharable
                                        Available
                                        Mounted
                                        Error Logging
                                        Capable Of Input
                                        Capable Of Output
                                        Random Access
        Slave                       00
        CDRP$L_FUNC           0000200C
                                        Read Physical Block
        Device Name           TOM$DKB
        Device Type
        Revision                    02
        HW Revision           5A373256
                                        "V27Z"
        Error Type                  05
                                        Extended Sense Data Received
        SCSI Target ID              01
        SCSI Lun                    00
        SCSI Sub-Lun                01
        SCSI Port Status      00000001
                                        %SYSTEM-S-NORMAL, normal successful comp

letion
        SCSI Command Block    8B190508
                                  0001
        SCSI Status                 02
                                        Check Condition
        Remaining Bytes             12
        Err Code & Valid            70
                                        Error during Current Command
                                        Sense Data Info Field NOT Valid
        Segment                     00
        Sense Flags                 0B
                                        Aborted Command
        Information Bytes     00000000
        Addnl Length                0A
                                        10 Additional Sense bytes
        Command specific      00000000
        ASCW                      004E
                                        ASC = 4E, ASCQ = 00
                                        Overlapped commands attempted

T.RTitleUserPersonal
Name
DateLines
798.1SSDEVO::T_GONZALESThu Mar 20 1997 13:012
    The errlog indicates an abort condition. were there any other
    entires previous to this entry?