ADSM-L

Re: [ADSM-L] TDP for SQL gui takes 20 min to display inactive

2012-12-28 11:59:12
Subject: Re: [ADSM-L] TDP for SQL gui takes 20 min to display inactive
From: Alex Paschal <apaschal5 AT FRONTIER DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Fri, 28 Dec 2012 08:56:13 -0800
Hi, Steve.  If restoring a file takes multiple small volumes in one
pool, but only one large volume in another pool, TSM will choose the
pool with the fewest volumes/mounts required, even if the smaller
volumes are significantly faster.  This causes some problems with
restores choosing real tape over small file or VTL volumes.  Well, I say
that as if it's fact, but while I haven't seen that documented anywhere,
that's what I've observed.  I've also received hearsay confirmation from
various IBM sources that it is this way.  YMMV :-)  I think this might
have been addressed with the libtype=vtl, and I'd like to see
confirmation on that, but that wouldn't help you much with file class
volumes.

I recommend you check your actlog for the sessions in question to see if
they've been getting tape mounts during restores.  If so, try setting
your copypool unavailable to see if that alleviates the problem.
   update stgpool copypool access=unavailable

The other question is, why would the copypool volumes still be
available?  Is this only happening in the window between "backup
stgpool" and "move drmedia"?

On 12/27/2012 5:36 AM, Schaub, Steve wrote:
Thanks, Steve.
I checked, and the node does have backdel=y.  it almost acts like it is going 
to the copypool rather than the diskpool for the meta data, but that makes no 
sense.
-steve s

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Steven Harris
Sent: Saturday, December 22, 2012 1:39 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] TDP for SQL gui takes 20 min to display inactive

Hi Steve.

Check to make sure that the node has backdel=yes specified.  I had one SQL 
server that was on a legal hold for 4 years and the restore screen took that 
long to come up because of the large number of objects.  If backdel is set to 
no, the logs won't be getting deleted and that may account for the large number 
of objects you are seeing.

Regards

Steve

Steven Harris

TSM Admin
Canberra Australia.





On 22/12/2012 12:26 AM, Schaub, Steve wrote:
Tsm server 6.2.4.0
Tsm client 6.2.3.0
Tdp client 6.3.0.1
Windows 2003EE x64

Our DBA's are complaining that when they have to use the TDP gui to restore older 
databases by selecting "active/inactive", it sometimes takes 20+ minutes for 
the list of databases to refresh.

My first suspicion was that the meta data had somehow gotten off to tape, but I 
have confirmed the primary data is all on disk (ST03_DISK_P04), only copypool 
(ST03_TAPE_C04) is on tape.

Any ideas what would cause this behavior?

tsm: TSMBCP01>q occ archer_sql ARCHER\COMPOUND\meta*

Node Name  Type Filespace   FSID Storage    Number of  Physical   Logical
                  Name             Pool Name      Files     Space     Space
                                                         Occupied  Occupied
                                                             (MB)      (MB)
---------- ---- ---------- ----- ---------- --------- --------- ---------
ARCHER_SQL Bkup ARCHER\CO-    12 ST03_DISK-   142,148    555.27    662.44
                   MPOUND\m-        _P04
                   eta\0000
ARCHER_SQL Bkup ARCHER\CO-    12 ST03_TAPE-   141,452    374.17    374.17
                   MPOUND\m-        _C04
                   eta\0000


tsm: TSMBCP01>q stg st03_disk_p04

Storage      Device       Estimated    Pct    Pct  High  Low  Next Stora-
Pool Name    Class Name    Capacity   Util   Migr   Mig  Mig  ge Pool
                                                      Pct  Pct
-----------  ----------  ----------  -----  -----  ----  ---  -----------
ST03_DISK_-  DISK             100 G    2.5    2.5    70   50  ST03_TAPE_-
P04                                                           P04


Steve Schaub
Systems Engineer II, Windows Backup/Recovery BlueCross BlueShield of
Tennessee
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