ADSM-L

Re: Trouble with using 8mm tape drives

1996-06-13 15:47:45
Subject: Re: Trouble with using 8mm tape drives
From: Chet Martel <cmartel AT PEACH.FRUIT DOT COM>
Date: Thu, 13 Jun 1996 14:47:45 -0500
If I am not misreading your intentions it sounds like you are trying to do
space management
which is NOT supported on AIX 4.1 in ADSM V2.  According to a REAME file I
have.  I
correlate HSM with space mgt.  As of matter of fact if you try to install
space management on a 4.1.4 system it blows away your vfs file in etc and
you get wacko messages.

At 12:28 PM 6/13/96 -0500, you wrote:
>
>Hello,
>
>I hope I can get some help with this.
>
>I am running AIX 4.1.4 with ADSM V 2.x (which I had to pull down from the ftp
>site, lslpp reports 2.1).  I am trying to demonstrate whether the HSM
>functionality will work for what we want in our environment.  We are not
>particularly interested in the backup/archive functions at this point, other
>than to backup the space managed filesystem (only one in this test
>environment).
>
>While I have been able to successfully migrate files disk to disk, when I
>attempt to backup either a space managed or non-space managed file system using
>ADSM, I continually get I/O errors and failure.
>
>Now I admit that it is perfectly possible that I have missed something that
>should have been obvious in the documentation, but try as I might, I can't find
>what it might be.
>
>Scenario --
>
>        Configure tape device to AIX using SMIT. (variable block size, should
>          it be fixed at some value?  I couldn't find anything in the docs
>           about it one way or the other.)
>        Configure ADSM tape device using SMIT.
>        Do all the defining of devices, libraries (manual), etc. necessary
>          to make ADSM aware of the drive.
>        Label a bunch of tapes using ADSM
>-->     Select Backup/Archive client.
>        Select Backup
>        Select Backup by File Specfication
>        Select all files in the filesystem by selecting all files (including
>          subdirectories).
>        Select backup.
>->      Mount a tape in the drive (I do run dsmadmc -mountmode to watch
>things).
>        See the message of
>          "8mm VOLX mounted in drive TAPEDRIVE01 (/dev/mt0)
>        See the "Waiting for media mount" window go away.
>        Either
>           a- see anywhere from a few hundred KB to a few MB written
>           b- see nothing written
>        See message -
>          I/O error on drive TAPEDRIVE01 (/dev/mt0) (OP=WRITE, CC=205, KEY=FF,
>          ASC=FF, ASCQ=FF).
>        Either -
>          a- window with "Detected System Error" message and backup stops or
>          b- window with "Waiting for Media Mount " message and dismounted tape
>             message and request for another tape and cycle back to ->
>          c- decide that having failed on x tapes I'm through messing around
>                and wait for the mount request to time out
>        Delete all volumes I've tried to use and cycle back to --> after
>          frustrating myself looking for any hint in the documentation
>
>I have seen the same messages using
>        1- an IBM provided (with the system) 8200 8mm tape drive (OK, it's an
>           old system -- what do you want for a test environment?)
>        2- a generic 8200 8mm tape drive
>        3- a generic 8505 8mm tape drive
>
>I have had no difficulty reading and writing the same tapes on the same tape
>drives using system software (i.e. tar or dd).
>
>So, please, am I missing something I should have seen or is this something that
>needs to be fixed?  Is there a later version of ADSM (which supports the HSM
>client under AIX 4.1) which I need?  We have to have AIX 4.1 for the larger
>than 2 GB filesystems (can you imagine managing 100 GB of space managed disk, 2
>GB at a time?).
>
>If anyone can help with this problem I would be glad to send you virtual
>brownies or cookies or other simulated rewards.  It will also let me get on
>with doing other things here at work, and thus feeling productive again.
>
>Janet Curtis
>
>
>Sr. Systems Programmer
>Administrative Computing Services and Utah Supercomputing Institute
>University of Utah
>
>udpjcc AT usi.utah DOT edu
>
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