Re: [EXTERNAL] Flashcopy dataset example

[Keith Gooding]

Bill,

ADRDSSU DATASET DUMP with the CONCURRENT(VIRTUALREQ) option will flash copy the 
dataset to a work dataset and then dump (backup) the work dataset. I have not 
tried this myself. You have to pre-define work datasets with a particular 
naming convention. See “virtual concurrent copy working space” in the Dfsmsdss 
Stirage Admin Guide.

Keith

Sent from my iPad

> On 18 Feb 2023, at 19:12, Pommier, Rex  wrote:
> 
> Bill,
> 
> Dump and restore is a different animal.  Dump creates a backup copy in DFDSS 
> format so it will NOT use flashcopy because it has to reformat the data into 
> the DFDSS format.  Restore takes the dump file and rebuilds the original 
> dataset.  COPY is what will use flashcopy if you're set up for it and have 
> the required software licenses.
> 
> Rex
> 
> -Original Message-
> From: IBM Mainframe Discussion List  On Behalf Of 
> Bill Giannelli
> Sent: Saturday, February 18, 2023 5:17 AM
> To: IBM-MAIN@LISTSERV.UA.EDU
> Subject: Re: [EXTERNAL] Flashcopy dataset example
> 
> hi rex,
> yes we have those utilities.
> But as far as your other questions, I have no idea. I am not a storage 
> systems guy.
> I think what I was after is the "dump" and "restore" commands.
> thanks
> Bill
> 
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Re: [EXTERNAL] Flashcopy dataset example

[Pommier, Rex]

Bill,

Dump and restore is a different animal.  Dump creates a backup copy in DFDSS 
format so it will NOT use flashcopy because it has to reformat the data into 
the DFDSS format.  Restore takes the dump file and rebuilds the original 
dataset.  COPY is what will use flashcopy if you're set up for it and have the 
required software licenses.

Rex

-Original Message-
From: IBM Mainframe Discussion List  On Behalf Of 
Bill Giannelli
Sent: Saturday, February 18, 2023 5:17 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: [EXTERNAL] Flashcopy dataset example

hi rex,
yes we have those utilities.
But as far as your other questions, I have no idea. I am not a storage systems 
guy.
I think what I was after is the "dump" and "restore" commands.
thanks
Bill

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Re: [EXTERNAL] Flashcopy dataset example

[Bill Giannelli]

hi rex,
yes we have those utilities.
But as far as your other questions, I have no idea. I am not a storage systems 
guy.
I think what I was after is the "dump" and "restore" commands.
thanks
Bill

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Re: [EXTERNAL] Flashcopy dataset example

[Pommier, Rex]

Bill,

A couple questions back.  Do you have DFDSS/DFSMS-dss/ADRDSSU?   Are you 
licensed on your DS8K for flashcopy?  Is the target disk volume involved in a 
PPRC replication scheme (global mirror or the like) with a secondary array?  If 
you answer yes to the first 2 questions and no to the third, this is an example 
that works for us.

//STEP005 EXEC  PGM=ADRDSSU,REGION=0M
//SYSPRINT DD  SYSOUT=*  
//SYSIN   DD  *  
  COPY DATASET( -
 INCLUDE(   -
 PVS.CL.AGENT - <<<< source dataset - is on 
a replicated volume but source doesn't matter to FC
 )) -
CANCELERROR  -   
CATALOG  -   
RENAMEUNCONDITIONAL( -   
 (PVS.CL.AGENT,  - 
  PVS.C6.AGENT.REX)) - <<<<< my target is on a disk not 
being replicated to our secondary site   
SPHERE   -   
TOL(ENQF)-   
TGTALLOC(SOURCE) -   
FR(REQ)  -  <<<<<<<  I'm telling DFDSS 
it has to use flashcopy
WAIT(2,2)

And here's the output of the job.

ADR101I (R/I)-RI01 (01), 2023.048 12:27:32 TASKID 001 HAS BEEN ASSIGNED TO 
COMMAND 'COPY '   
ADR109I (R/I)-RI01 (01), 2023.048 12:27:32 INITIAL SCAN OF USER CONTROL 
STATEMENTS COMPLETED 
ADR016I (001)-PRIME(01), 2023.048 12:27:32 RACF LOGGING OPTION IN EFFECT FOR 
THIS TASK   
ADR006I (001)-STEND(01), 2023.048 12:27:32 EXECUTION BEGINS 
 
ADR411W (001)-DDFLT(02), 2023.048 12:27:36 DATA SET PVS.CL.AGENT IN CATALOG 
CATALOG.PROD.USERCAT ON VOLUME S20254 WAS NOT
 SERIALIZED ON REQUEST  
 
ADR711I (001)-NEWDS(01), 2023.048 12:27:36 DATA SET PVS.CL.AGENT HAS BEEN 
ALLOCATED WITH NEWNAME PVS.C6.AGENT.REX USING STORCLAS 
 NORMAL, DATACLAS DCVSAMP, AND MGMTCLAS NOTMANAG
 
ADR730W (001)-CVSAM(01), 2023.048 12:27:36 CLUSTER PVS.CL.AGENT IS OPEN 
 
ADR806I (001)-T0MI (03), 2023.048 12:27:36 DATA SET PVS.CL.AGENT COPIED USING A 
FAST REPLICATION FUNCTION<<<<<<<<<<<<<<<<<<<<<< 
flashcopy used
ADR801I (001)-DDDS (01), 2023.048 12:27:36 DATA SET FILTERING IS COMPLETE. 1 OF 
1 DATA SETS WERE SELECTED: 0 FAILED SERIALIZATION
 AND 0 FAILED FOR OTHER REASONS 
 
ADR454I (001)-DDDS (01), 2023.048 12:27:36 THE FOLLOWING DATA SETS WERE 
SUCCESSFULLY PROCESSED   
  PVS.CL.AGENT  
 
ADR006I (001)-STEND(02), 2023.048 12:27:36 EXECUTION ENDS   
 
ADR013I (001)-CLTSK(01), 2023.048 12:27:36 TASK COMPLETED WITH RETURN CODE 0004 
 
ADR012I (SCH)-DSSU (01), 2023.048 12:27:36 DFSMSDSS PROCESSING COMPLETE. 
HIGHEST RETURN CODE IS 0004 FROM:   
 TASK001
 

The reason I asked about the disk replication is that out of the box, flashcopy 
is prohibited to send the target dataset to a replicated volume.  I believe 
there some hoops that can be jumped through to make this happen (at least I 
seem to remember reading about this at some point) but normally that's 
prohibited.  If everything is set up properly, you don't need the FR(REQ) or 
FR(anything) and DFDSS will use FC when it can and if it can't it'll do the 
copy in the traditional way.

HTH

Rex

-Original Message-
From: IBM Mainframe Discussion List  On Behalf Of 
Bill Giannelli
Sent: Friday, February 17, 2023 10:27 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: [EXTERNAL] Flashcopy dataset example

Can anyone provide an example on how to use flashcopy to copy, or backup, an 
individual dataset?
thanks
Bill

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Re: Flashcopy dataset example

[Colin Paice]

My article is used with MQ ( and DB2) pages sets where backups are taken
while the pagesets are in use ( so called fuzzy backup)
To recover a page set, you restore the backup and restart DB2/MQ and they
read the logs and update the page sets.

On Fri, 17 Feb 2023 at 17:21, Bill Giannelli 
wrote:

> I was looking for a point-in-time backup of a dataset
>
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Re: Flashcopy dataset example

[Bill Giannelli]

I was looking for a point-in-time backup of a dataset

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Re: Flashcopy dataset example

[Colin Paice]

Bill,

I wrote a blog post on this
many years ago.   I think you want ADRDSSU with Fastreplication


*How it works.*
The storage control unit has a list of all "tracks" used by a dataset.
To copy a dataset by fast replication the hardware just copies this list -
this takes seconds.
As the original dataset is updated, the list of  its "tracks" is updated.
The copy's list stays constant.  Over time the list of the original and
copy diverge.

Making the fastcopy does not use any disk space.  As the original dataset
is updated the number of "tracks" in use will increase.

To make a DR backup - you have to copy it off the DISK subsystem onto
another subsystem ( or tape, or FTP it).   This can take a long time ( many
minutes or hours)
Colin

On Fri, 17 Feb 2023 at 16:27, Bill Giannelli 
wrote:

> Can anyone provide an example on how to use flashcopy to copy, or backup,
> an individual dataset?
> thanks
> Bill
>
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Re: [External] : Flashcopy dataset example

[Bill Giannelli]

ok, that's scary!

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Re: [External] : Flashcopy dataset example

[Lionel B. Dyck]

Just for fun I asked ChatGPT your question and here is its answer - ymmv:

--

Storage systems. The specific syntax for the FlashCopy command to copy a 
dataset on IBM storage will depend on the storage system and software that you 
are using.

Here is an example of the FlashCopy command syntax for an IBM DS8000 storage 
system:

Copy code
FlashCopy SOURCE dataset_name TARGET copy_dataset_name
In this command, replace "dataset_name" with the name of the source dataset 
that you want to copy, and replace "copy_dataset_name" with the name you want 
to give to the copy of the dataset.

--

Lionel B. Dyck <><
Website: https://www.lbdsoftware.com
Github: https://github.com/lbdyck

“Worry more about your character than your reputation. Character is what you 
are, reputation merely what others think you are.”   - - - John Wooden

-Original Message-
From: IBM Mainframe Discussion List  On Behalf Of 
Bill Giannelli
Sent: Friday, February 17, 2023 10:54 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: [External] : Flashcopy dataset example

thank you for your response.
But I was looking for copying by dataset name to a created backup dataset.
Also, to be able to specify a list of datasets to one backup dataset.
We used to do this with EMCSNAP.
But we have moved from EMC dasd to IBM.
thanks
Bill

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Re: [External] : Flashcopy dataset example

[Bill Giannelli]

thank you for your response.
But I was looking for copying by dataset name to a created backup dataset.
Also, to be able to specify a list of datasets to one backup dataset.
We used to do this with EMCSNAP.
But we have moved from EMC dasd to IBM.
thanks
Bill

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Re: [External] : Flashcopy dataset example

[Jon Nolting]

We use something like this when the virtual address will changed.  We also put 
these commands into execs



flashcopy a246 0 end to b246 0 end

flashcopy a246 0 end to b246 0 end label SGB246





Jon Nolting

System Administrator

Engineering IT



jon.nolt...@oracle.com

425-295-1733 (Cell)



-Original Message-
From: IBM Mainframe Discussion List  On Behalf Of 
Bill Giannelli
Sent: Friday, February 17, 2023 8:27 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: [External] : Flashcopy dataset example



Can anyone provide an example on how to use flashcopy to copy, or backup, an 
individual dataset?

thanks

Bill



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Flashcopy dataset example

[Bill Giannelli]

Can anyone provide an example on how to use flashcopy to copy, or backup, an 
individual dataset?
thanks
Bill

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