ADSM-L

Re: remarkeble Q EVENT

1996-08-26 11:19:42
Subject: Re: remarkeble Q EVENT
From: Dwight Cook <decook AT AMOCO DOT COM>
Date: Mon, 26 Aug 1996 10:19:42 -0500
Item Subject: remarkeble Q EVENT
     If you are not at 2.1.0.8 GO TO IT NOW ! ! ! ! !
     We've been running with only two 3590 tape drives in a 3494 atl and
     were experiencing difficulties with mount request denied messages
     where all (both) the tape drives were busy with reclamation (or two
     migration processes) and would see where a tape would fill and while
     the output tape was rewinding the request for a scratch would fail due
     to no drives available...(sigh!) anyway, life is much better in
     2.1.0.8... This is not your exact problem below but I would bet has
     something to do with it.... BUT I've noticed that in 2.1.0.8 with two
     tape drives active with two processes (say migration & recover or 2
     migs, etc) that a Q MOUNT will return NO TAPES MOUNTED where if you
     kill one process then a q mount will show a tape mounted... (sighx2)
     I think I'm turning up a lot of odd problems because the two servers
     we have here have up to 225GB/night tossed at them... within the last
     two weeks things have grown beyond belief and I'm finding myself with
     two ADSM servers running at 100% about 12  hours of the day and 80+%
     the rest of the time... (sighx5) heck, I just got through producing
     the numbers for 2 more tape drives / atl and now I'm thinking I need
     two more servers and two extra tape drives along with another couple
     hundred GB of dasd buffer pool... July we had @ 6TB of traffic on two
     servers (3.5TB & 2.6TB) and I would bet that august numbers will show
     7+terabytes of traffic.... (oh, my two servers are 59H & 591 w/ AIX
     4.1 & about 120GB&180GB diskpools) 24hour periods show up to 225GB of
     traffic with a majority (200GB) being backup/archive events
     Summary: get on 2.1.0.8 it is MUCH better than 2.1.0.3 in heavy load
     environments...
     later
          Dwight



______________________________ Reply Separator _________________________________
Subject: remarkeble Q EVENT
Author:  ADSM-L at unix,sh/dd.RFC-822=ADSM-L\@VM\.MARIST\.EDU
Date:    8/26/96 7:52 AM


Don't make ADSM fool on you:

q event * t=a gives the following output:

Scheduled Start          Actual Start             Schedule Name     Status
--------------------     --------------------     -------------     ---------
08/26/96   07:00:00      08/26/96   07:00:01      BACKUP_COPY       Completed
08/26/96   07:00:00      08/26/96   07:00:01      BACKUP_COPY       Completed
08/26/96   07:30:00      08/26/96   07:30:05      BACKUP_DB         Completed

So the BACKUP DATABASE and BACKUP STORAGEPOOL seems to completed successfully, B
,
looking in the actlog, you find the following:

08/26/96   07:00:01      ANR2750I Starting scheduled command BACKUP_COPY ( back
g
                          3494pool 3494pool.cp ).
08/26/96   07:00:01      ANR1210I Backup of primary storage pool 3494POOL to
copy
                          storage pool 3494POOL.CP started as process 149.
08/26/96   07:00:01      ANR2753I (BACKUP_COPY):ANR2110I BACKUP STGPOOL started
as
                          process
08/26/96   07:00:01      ANR2753I (BACKUP_COPY):149.
08/26/96   07:00:01      ANR2756I Scheduled command BACKUP_COPY started
                          successfully.
08/26/96   07:00:02      ANR1228I Removable volume 000521 is required for
storage
                          pool backup.
08/26/96   07:00:02      ANR8324I 3590 volume 000521 is expected to be mounted
                          (R/W).
08/26/96   07:00:02      ANR1401W Mount request denied for volume 000613 - mount
                          failed.
08/26/96   07:00:14      ANR1216E BACKUP STGPOOL: Process 149 terminated -
storage
                          media inaccessible.
08/26/96   07:00:14      ANR1214I Backup of primary storage pool 3494POOL to
copy
                          storage pool 3494POOL.CP has ended.  Files Backed Up:
                          0, Bytes Backed Up: 0, Unreadable Files: 0, Unreadable
                          Bytes: 0.

..........

08/26/96   07:30:05      ANR2750I Starting scheduled command BACKUP_DB ( backup
db
                          devclass=3494-3590 type=full ).
08/26/96   07:30:05      ANR2280I Full database backup started as process 150.
08/26/96   07:30:05      ANR2753I (BACKUP_DB):ANR2280I Full database backup star
d
                          as
08/26/96   07:30:05      ANR2753I (BACKUP_DB):process 150.
08/26/96   07:30:05      ANR1404W Scratch volume mount request denied - mount
                          failed.
08/26/96   07:30:05      ANR2751I Scheduled command BACKUP_DB completed
                          successfully.
08/26/96   07:30:31      ANR4578E Database backup/restore terminated - required
                          volume was not mounted.

Did I missed something and fool myself, or what?

(we are running ADSM V2.1.0.3 on a SP2 (AIX 4.1.4.0) using 3494 with 3590
units).

Regards,

Henk ten Have                   SARA, Academic Computing Services Amsterdam
Systems Programmer              Kruislaan 415
E-mail: hthta AT sara DOT nl           1098 SJ Amsterdam
Phone : +31205923000            The Netherlands
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