RE: savf files

[Colin Williams <colin.williams@xxxxxxxxxxxx>]

Al,

Very true. 

In fact I have used that fact in the past to knock up a utility to
distribute a save file to a client's as400 via a DDM file. 

Very handy!

cheers
Colin.W

http://as400blog.blogspot.com
 
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-----Original Message-----
From: Al Barsa [mailto:barsa@xxxxxxxxxxxxxxxxxxx] 
Sent: 18 February 2005 13:54
To: Midrange Systems Technical Discussion
Subject: Re: savf files



A save file (*SAVF) is simply a single membered unkeyed physical file that
is 528 bytes in length.  The OVRSAVF command allows you to read the file in
a program, although you can't muck with the contents, because IBM writes a
checksum byte at the end, and if you've mucked with it, it won't restore. On
the other hand, if you want to lock it up so no one can restore from it, you
can change it, but only if you know how to change it back exactly.

Al

Al Barsa, Jr.
Barsa Consulting Group, LLC

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The nifty thing about the iSeries is that if you use SAVLIB to save an
entire library, you can use RSTOBJ and pluck a single object out of the save
and restore it!

So, if the save file (or backup tape) has a library in it (on it) you can
restore the entire library, or just selected objects.

My perception of a save file is that IBM wrote a 'device driver' called a
save file.  When you do saves/restores to a save file, your job will
sometimes show SAVFWAIT as the status-- similar to TAPEWAIT for a physical
device.  I think the operating system sees a save file is another tape
device!

You can also save the save file data (SAVSAVFDTA (??)) from the file to a
physical tape device.  This transfers the contents of the save file to the
tape file.  Once you've done this, you can restore from tape as if the save
had been to the tape device in the first place!

--Paul E Musselman
PaulMmn@xxxxxxxxxxxxxxxxxxxx
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