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Wednesday, August 29, 2018

Win2K & Win2003 - Data Currently Unavailable On Server

This past weekend we performed a DR test on quit a few servers and discovered a situation that was a wake up call for anyone still using Windows 2000 or Windows 2003. The issue is that when we ran a restore the IBM Spectrum Protect 8.1 server issued a warning on all the files for the particular node with the following message type…

ANE4035W (Session: 79, Node: ODC-WINCS-1-DR)  File '\\od-wincs-1\e$\834\c-oh\files-20170823-123000' currently unavailable on server.

The tape was in a readonly state and accessible by the library so it was not a tape unavailable problem. I then querried the file and ran some tests suggested by IBM in the following link

http://www-01.ibm.com/support/docview.wss?uid=swg21249032

The data is present and on tape but TSM will not restore it. (See the queries below) IBM would not help us because the OS is unsupported as is the TSM client. We could not restore the System State, System Services, or any of the Data to the DR replica. What we could do is access the data from a supported client level on a supported OS level (i.e. TSM Client 6.4 from a Windows 2008 server). We were unable to recover the Win2K/Win2003 servers during the DR test and unfortunately I know many companies out there still have some of these servers in their environment. It's time to upgrade! Your data is at risk!

tsm: OMATSM02>select * from backups where node_name='ODC-WINCS-1-DR' and FILESPACE_ID=1 and hl_name=upper('\834\c-oh\') and LL_NAME=upper('files-20170823-123000')

      NODE_NAME: ODC-WINCS-1-DR
FILESPACE_NAME: \\od-wincs-1\e$
   FILESPACE_ID: 1
          STATE: ACTIVE_VERSION
           TYPE: DIR
        HL_NAME: \834\C-OH\
        LL_NAME: FILES-20170823-123000
      OBJECT_ID: 11926208445
    BACKUP_DATE: 2018-08-10 03:04:37.000000
DEACTIVATE_DATE:
          OWNER:
     CLASS_NAME: WIN-DR-MC
    ACTUAL_SIZE:

tsm: OMATSM02>show bfo 11926208445

Bitfile Object: 11926208445
  Active
**Sub-bitfile 11926208445 is stored in the following aggregate(s)
Super-bitfile: 11926199674, Offset: 26157087, Length 735, Deduped: F


tsm: OMATSM02>show bfo 11926199674

Bitfile Object: 11926199674
**Super-bitfile 11926199674 contains following aggregated bitfiles,
Bitfile Id, offset, length, active state or owner, link bfid
11926199674   0             8732          Active
11926199676   8732          1527          Active
.
.
.
11926208946   26573407      5510          Active
11926208947   26578917      49168         Active

**Sub-bitfile 11926199674 is stored in the following aggregate(s)
  Super-bitfile: 11926199674, Offset: 0, Length 8732, Deduped: F

**Archival Bitfile Entry
  Bitfile Type: PRIMARY  Storage Format: 22
  Bitfile Size: 26631381  Number of Segments: 1, flags: 0
  Storage Pool ID: 33  Volume ID: 22903  Volume Name: L42803


tsm: OMATSM02>q vol L42803 f=d

                   Volume Name: L42803
             Storage Pool Name: WIN-DR-TAPE
             Device Class Name: IBM-LTO-4
            Estimated Capacity: 4.2 T
       Scaled Capacity Applied:
                      Pct Util: 100.0
                 Volume Status: Full
                        Access: Read-Only
        Pct. Reclaimable Space: 0.0
               Scratch Volume?: Yes
               In Error State?: No
      Number of Writable Sides: 1
       Number of Times Mounted: 227
             Write Pass Number: 1
     Approx. Date Last Written: 08/12/18   16:44:25
        Approx. Date Last Read: 08/25/18   22:06:34
           Date Became Pending:
        Number of Write Errors: 0
         Number of Read Errors: 0
               Volume Location:
Volume is MVS Lanfree Capable : No
Last Update by (administrator): CSMALL
         Last Update Date/Time: 08/25/18   20:29:37
          Begin Reclaim Period:
            End Reclaim Period:
  Drive Encryption Key Manager: IBM Spectrum Protect
       Logical Block Protected: No



tsm: OMATSM02>q libvol dr-libr L42803

Library Name     Volume Name     Status               Owner          Last Use      Home        Device
                                                                                   Element     Type
------------     -----------     ----------------     ----------     ---------     -------     ------
DR-LIBR          L42803          Private                             Data          1,089

Monday, August 06, 2018

Spectrum Protect Server 8.1.x Paging Space Issue

I thought I would pass this along...I have two Spectrum Protect 8.1.4 instances on the same AIX 7 LPAR that since their upgrade to this version has had frequent exhausting of paging space crashes. We reviewed and checked processes and figured it was an AIX issue. Upon deeper investigation I noticed there were some previous APARs for DB2 exhausting paging space due to a 64k block size. Investigating that further led me to the following APAR for Spectrum Protect 

IT23731: SPECTRUM PROTECT SERVER ON AIX MAY RUN INTO PAGING AND OUT OF MEMORY CONDITION

So to check I ran the following shell command to list the top 10 processes using memory/paging

# svmon -Pt 10 -O summary=basic,unit=MB

Unit: MB

----------------------------------------------------------------
     Pid Command          Inuse      Pin     Pgsp  Virtual
 4391072 db2sysc       74805.10     51.4 15266.27 72775.38
 7274744 db2sysc       71323.35     50.2 15579.61 71796.98
10486106 db2vend       71164.58     47.6 15084.41 71589.28
 4915692 dsmserv       15230.22     49.5  6629.03 20345.98
 2490670 dsmserv        1931.09     49.6   299.12  2197.74
 5701694 db2sysc         632.43     47.6     42.1   732.73
 8126714 db2sysc         569.93     47.6     29.1   665.60
 6553630 db2vend         561.76     47.6     37.0   660.47
 6422602 db2sysc         559.20     47.6     37.2   657.31
 4849682 db2sysc         559.20     47.6     37.2   657.31

So the db2sysc and dsm2vend along with the dsmserv are using up large amounts of paging.

Here is my using in topas

PAGING SPACE
Size,MB   64512
% Used     60
% Free     40
So what's the solution? Restart the TSM instance(s) until you can upgrade to 8.1.5