I agree with Roger.
TSM is a complicated and vast subject. Trying to condense it into a few
paragraphs or scatter it in different places is not going to work.
I would like to have back the pdf version of the Administrator's Guide (to
be able to highlight it, read it offline etc).
Or at least, have the information contained in the Administrator's Guide,
reviewed, updated and consolidated in one place in the Knowledge Center.
I think that everything that was in the Administrator's Guide is important
and should be kept, unless it's obviously obsoleted.
Giacomo Testa
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Roger Deschner
Sent: 09 April 2016 20:46
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Preempt
This would appear to be a bug, so submit it to IBM as a bug.
The doc (Administrator's Guide) is very clear on this issue. "The server can
preempt server or client operations for a higher priority operation when a
mount point is in use and no others are available, or access to a specific
volume is required." It then goes on to list Restore as a high-priority
operation that can preempt Backup among other lower-priority operations, for
either a mount point or a volume.
Preemption SHOULD work similarly to, and at the same speed as, CANCEL
PROCESS. Preemption should happen as soon as the backup of an object (which
could be large) is completed. Then the BACKUP STG command should be
cancelled to allow the Restore to have access to the resources it needs. I
have watched a Reclamation process get cancelled by a Restore, sometimes to
my surprise ("Where did it go?") until I discovered the Restore which
preempted it.
Yet another proof of the value of the Administrator's Guide manual. You can
find this - sort of - in the online doc, but a direct search does not bring
it up, and it's broken apart into pieces so that it's difficult to gain a
comprehensive understanding. This is a very specific case where the
Administrator's Guide manual is very much superior to the online web-based
doc which sort-of contains the same information. Keep and update the
Administrator's Guide!
Roger Deschner University of Illinois at Chicago rogerd AT uic DOT edu
======I have not lost my mind -- it is backed up on tape somewhere.=====
On Fri, 8 Apr 2016, Hans Christian Riksheim wrote:
>Hi Pam,
>
>yes it is. At first I thought the backup stg was cancelled but that it
>was in the middle of a backing up a large object. But that was not the
>case. It was moving object after object to copy stg while the restore
>was waiting for that tape. After one hour backup stg continued with
>another primary volume and the restore session could use it.
>
>Hans Chr.
>
>On Fri, Apr 8, 2016 at 5:40 PM, Pagnotta, Pamela (CONTR) <
>Pamela.Pagnotta AT hq.doe DOT gov> wrote:
>
>> Han,
>>
>> Is it waiting for a tape that is in use in the backup operation?
>> Restores should have top priority, as far as I know.
>>
>> Regards,
>>
>> Pam Pagnotta
>> Sr. System Engineer
>> Criterion Systems, Inc./ActioNet
>> Contractor to US. Department of Energy Office of the CIO/IM-622
>> Office: 301-903-5508
>> Mobile: 301-335-8177
>>
>>
>> -----Original Message-----
>> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf
>> Of
>> Hans Christian Riksheim
>> Sent: Friday, April 08, 2016 11:28 AM
>> To: ADSM-L AT VM.MARIST DOT EDU
>> Subject: [ADSM-L] Preempt
>>
>> Shouldn't a restore have first priority for a tape volume? I have a
restore
>> waiting an hour for a backup stg operation. The option NOPREEMPT is at
>> default(No).
>>
>> Hans Chr.
>>
>
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