Message: CA Disk does not have any datasets existing on the volume
Article ID: 137432
Updated On:
Products
Issue/Introduction
Hello,
We believe we're having a problem with DMS right now. We use CA-1 for tape management, which recognizes CA-Disk tapes as EDM. When I look at some of the tapes/keys in DMS some of the tapes report that there are many files on the tape, however when we try to display them DMS reports back that there are no files on the tape. I'll copy a screen from CA-1 and from DMS to show what I'm talking about:
From CA-1
--------------------------- VOLSER INQUIRY DISPLAY --------------------------
COMMAND ===> I DATE: 09/20/2019
19.263
VOLSER = 297733 ACTVOL= SMSMC= BLANKS
DSN = SYSXN.ENG.XDC005R.LOCL DSN17= .ENG.XDC005R.LOCL
EXPDT = PERMANENT ACCT= HEXZEROS
FLAG1 = 40 FLAG2 = 40 FLAG3 = 20 BATCHID= 00 =
FLAG4 = 00 FLAG5 = 00 FLAG6 = 00 HOOKID = 44 = CLOSE IO
EDMID = DMS1 WMC = 00000 WWID = - -
CDATE = 12/30/2016 CJOB = XDC005RM CTIME = 1614 CPGM = ADSMI002
LDATE = 12/30/2016 LJOB = XDC005RM LTIME = 1614 LPGM = ADSMI002
CSTEP = DMS CDDNAME= ARCHIVEC CUNIT = 4566 LUNIT = 4566
OUTDATE= ZEROS OUTCODE= SLOT = 0000000 TRERRC = 00000
BTHDATE= 04/25/2006 VENDOR = BLANKS COUNT = 00047 TWERRC = 00000
DATECLN= ZEROS USECLN = 00000 CLNCNT = 000 TRERRI = 00000
VOLSEQ = 0001 ROBTY = VIBM ROBID = 002 TWERRI = 00000
1STVOL = NEXTVOL= PREVVOL= PRERRC = 00000
NUMDSNB= 00000 1STDSNB= 00000000 LSTDSNB= 00000000 PWERRC = 00000
LABEL = SL DEN = 38KC TRTCH = 36X2 PRERRI = 00000
RECFM = U LRECL = 000000 BLKSIZE= 032760 PWERRI = 00000
AUDATE = 12/30/2016 AUTIME = 1614 BESKEY = 00000 BLKCNT = 0000013786
AUCODE = 02 AUFLAG1= 00 CPUID = HRC2 USERID = XDC005R
VOLPERC= 001 FILPERC= 001 COMPRES= 075 BYTEPRC= 099 CTLGCNT= 000
From DMS
DMS036C ------ CA Disk Single Archive Volume Display No datasets found on vol
COMMAND INPUT ===>
Available options:
Press: ENTER to return 1 to disable archvols
2 to enable archvols 3 to display contents
-------------------------------------------------------------------
Archive volser(s): 297733
Archvols key: 297733 Key of next volume:
Copy key: (NONE) Device type: 3490 DYNA
Archive data set name: SYSXN.ENG.XDC005R.LOCL
-------------------------------------------------------------------
Creation time: 16:14:06 Number of data sets: 130
Creation date: 30DEC2016 Number of blocks: 13786
Expiration date: PERMANENT Number of kilobytes: 438895
Volume count: 1 NUMBER OF FEET USED:" 171
-------------------------------------------------------------------
ARCHVOLS IS A COPY ARCHVOLS IS ENABLED
Environment
Release : 12.5
Component : CA Disk Backup and Restore
Resolution
First, here are some basics of DSNINDEX and ARCHVOLS records.
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In the majority of CA Disk tapes being created, multiple data sets will be written to a tape.
For each of the data sets written, a DSNINDEX record is created.
For the tape created, an ARCHVOLS record is created for the Primary [PRIM] and the COPY (if one is created).
All DSNINDEX records have a field showing the PRIM ARCHVOLS volser.
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If CA Disk has determined that a data set will require more than one tape to hold it,
then CA Disk will write that data set to as many tapes as needed.
When writing that data set is completed, the last tape is closed with no other data sets written to it.
For the data set that was written to multiple tapes, a single DSNINDEX record is created.
This record will list the first DASD volser where this data set resided.
That DSNINDEX record will also list the first ARCHVOLS volser.
An ARCHVOLS record is created for every tape created in this multi-volume chain.
In each of these ARCHVOLS, there is a "Seq No" field that shows the sequence number of that tape
and a "Next Chain" field that lists the next volser in the ARCHVOLS chain.
There is no field that "points up" the chain, only the one field that "points down" the chain.
[If COPY tapes are also created, a chain of COPY ARCHVOLS are created just as the PRIM ARCHVOLS are created.]
NOTE: When the ARCHVOLS is closed the statistics fields are updated: Num of DSNs, Block Count, Byte Count.
These fields are never updated thereafter.
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Please see KB 20048 for info about: How Does CA Disk Determine Tape Utilization,
which explains more about multi-volume ARCHVOLS.
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A simple utility will report the ARCHVOLS records and the DSNINDEX records contained on an ARCHVOLS.
This utility is:
//STEP1 EXEC LISTD
//SYSIN DD *
Example commands are:
LISTV [list all ARCHVOLS records]
LISTV VOL=nnnnnn [list a single ARCHVOLS record]
LISTV VOL=(nnnnnn,nnnnnn,PR*, etc.) [list several ARCHVOLS or those that match the pattern]
LISTD VOL=nnnnnn [list DSNINDEX records on a tape]
LISTD VOL=PR*,DUPLICATES [list DSNINDEX records on these tapes including duplicate data set name entries]
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Please look in the CA Disk User Guide, ch 10, FILES Maintenance, Topic: LISTV Flags.
This displays the vital information that CA Disk has recorded about the ARCHVOLS, such things as:
First Byte:
x'40' - Volume is a copy of another volume
x'04' - Volume is full (next data set did not fit)
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If researching a multi-volume ARCHVOLS, run just the LISTV command to get all the ARCHVOLS records together.
Then, you can search to easily find each of the records in a chain, from one to the next, to the next, etc.
When you get all the ARCHVOLS records together, you can see all the "chain" fields to make sense of all this.
An error message example...
LISTD VOL=nnnnnn
ADSDM484 3543 NO RECORDS SELECTED
This can be an easy mistake to make by running a LISTD on a COPY ARCHVOLS.
This error message is because the DSNINDEX records have only the PRIM ARCHVOLS noted in the records.
The ARCHVOLS of the COPY volume does not point to the PRIM.
Also, look for the message, "ARCHVOLS IS A COPY".
If the KEY CHAIN field is blank, this is because this is the last volume in the chain [or the only volume].
Run a LISTV on the record to see the FLAG FIELDS to confirm.
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Additional Information
Here is an example of a LISTV report of the last volume (#5) in a multi-volume chain...
12019.263 SEP 20,
2019 A R C H
I V E V O L U M E S
PAGE 1
FRIDAY 12.07 PM
CA DISK r12.5
ARCHIV WRITTEN DATA BLOCK
K/M/G/T ID VOL FLAGS COPY TRUE
SEQ DEVICE KEY
KEY DATA SET NAME TIME DATE
EXPDATE SETS COUNT
BYTES RC CNT 1 2 3 KEY
VOL NO TYP UNIT CHAIN
------
---------------------------- ------------- -------- ------- --------- -------
-- --- ------ ------ ------ --- -------- ------
B00004 PW.TS.BK 0137 2019.219
1999.365 1 323127
9.86G 61 5 048B00 B00004
5 3490DYN1
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