[Info-vax] more confusion with AUTOGEN, PAGE and SWAP files

Phillip Helbig---undress to reply helbig at astro.multiCLOTHESvax.de
Sun Aug 7 06:23:04 EDT 2011


AGEN$PARAM.REPORT says:

Including parameters from: SYS$SYSTEM:MODPARAMS.DAT

Including parameters from:  SYS$SYSTEM:AGEN$COMMON.DAT

so it looks like all intended parameters are available.  (BTW, why the 
extra space in the second line?)

I have these values specified in the parameter files:

SYS$SYSROOT:[SYSEXE]MODPARAMS.DAT;11

PAGEFILE2_NAME="DISK$SWAPPAGE_110:[SYS110.SYSEXE]PAGEFILE2.SYS"
MIN_PAGEFILE2_SIZE=2101200
SWAPFILE2_NAME="DISK$SWAPPAGE_110:[SYS110.SYSEXE]SWAPFILE2.SYS"
MIN_SWAPFILE2_SIZE=36500

******************************
SYS$COMMON:[SYSEXE]AGEN$COMMON.DAT;9

PAGEFILE1_NAME="SYS$SYSTEM:PAGEFILE.SYS"
PAGEFILE1_SIZE=0          ! tell AUTOGEN not to resize primary page file
SWAPFILE1_NAME="SYS$SYSTEM:SWAPFILE.SYS"
SWAPFILE1_SIZE=0          ! tell AUTOGEN not to resize primary swap file

However, running AUTOGEN with TESTFILES swaps (sorry!) the names of the 
page files:

    Page file calculations:

        PAGEFILE1_SIZE information (for DISK$SWAPPAGE_110:[SYS110.SYSEXE]PAGEFILE2.SYS;1):
           Feedback information.
             Old value was 2101200, New value is 2101200
              Maximum observed usage: 128
           PAGEFILE1 will not be modified. The file size is within 10%

        PAGEFILE2_SIZE information (for SYS$SYSTEM:PAGEFILE.SYS):
           Feedback information.
             Old value was 20500, New value is 2101200
              Maximum observed usage: 112
           PAGEFILE2_SIZE will be modified to hold 2101200 blocks

but not for the swap files:

    Swap file calculations:

        SWAPFILE1_SIZE information (for SYS$SYSTEM:SWAPFILE.SYS):
           Feedback information.
             Old value was 20500, New value is 20480
              Maximum observed usage: 0
        Override Information - parameter calculation has been overridden.
           The calculated value was 29200.  The new value is 20480.
           SWAPFILE1_SIZE calculation has been set to current size by user.
           SWAPFILE1 will not be modified. The file size is within 10%

        SWAPFILE2_SIZE information (for DISK$SWAPPAGE_110:[SYS110.SYSEXE]SWAPFILE2.SYS;1):
           Feedback information.
             Old value was 36500, New value is 36500
              Maximum observed usage: 0
        Override Information - parameter calculation has been overridden.
           The calculated value was 29200.  The new value is 36500.
           SWAPFILE2_SIZE is not allowed to be less than 36500.
           SWAPFILE2 will not be modified. The file size is within 10%

Why are the names of the page files swapped but not the names of the
swap files? 

Obviously, I don't want the files on the system disk touched by AUTOGEN; 
that's the whole point of this exercise.  What is wrong?

Note that for SWAPFILE2_SIZE is says that it won't be modified since the 
file size is within 10%, but this isn't true for 29200 and 36500.  OK, 
it should not be modified since the calculated size is less than the 
minimum size.  So, is the message about 10% a bug?  (Maybe it appears 
whenever the size won't be modified, for whatever reason?)

The above example is from a node which just rebooted.  However, other 
nodes which didn't reboot behave in the same way.




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