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Conference vaxaxp::vmsnotes

Title:	VAX and Alpha VMS
Notice:	This is a new VMSnotes, please read note 2.1
Moderator:	VAXAXP::BERNARDO

Created:	Wed Jan 22 1997
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	703
Total number of notes:	3722

218.0. "HSD10 and RZ29" by LISVAX::RIBEIRO_N (NELSON RIBEIRO @XIP) Wed Feb 19 1997 05:35

I known that this may having nothing to do with this conference but this is just
an idea i have about a certain problem and i would like to have some opinions on
it.

A costumer has logged a call complaining about this problem: 
        VAX4000
            - DSSI0-System Disk (v6.2)
            - DSSI1-----------------
                                    |
                                    HSD10
                                    |   -RZ29 \_DIA2 (mirror)
                                    |   -RZ29 /
                                    |   -RZ29 \_DIA3 (mirror)
                                    |   -RZ29 /
                                    |
        VAX4000                     |
            - DSSI0-SysDisk (v6.2)  |
            - DSSI1-----------------

Every time the system is starting up the DIA2 disk-set starts doing something
like a rebuild; the leds of both disk of the set start blinking for about one
hour. At the OS level, the VMS doesn't detect anything unusual. To VMS is like
nothing is happening. 
So i figure that the problem is at the controller level. Am i right?

The DIA2 set has some communs files like for instance the authorize file and i
few others, and the other set has a database that is closed before any shutdown
operation.
In conclusion, the DIA2 set has some open files everytime the system is going
down and the DIA3 set doesn't.
Can this be the problem?

There is already been an intervention at the costuer site to change the
controller and to swap disks, but the problem is still happening.

Any ideas, anyone?

Thanks,
NelsonR.

T.R Title User Personal
Name Date Lines

218.1 Let's see what the controller says CSC32::M_DIFABIO MOVL #OPINION,EXE$GL_BLAKHOLE Fri Feb 21 1997 19:08 14

T.R	Title	User	Personal Name	Date	Lines
218.1	Let's see what the controller says	CSC32::M_DIFABIO	MOVL #OPINION,EXE$GL_BLAKHOLE	`Fri Feb 21 1997 19:08`	14
	Nelson, Since VMS does cause the action to occur, open files is not likely. That would be true for a Host Based Shadowset, not a controller based mirrorset. It might be interesting to set host/dup to the HSD10 while the action is occurring and look at the mirrorset there. $ set host/dup/server=mscp$dup/task=params 'hsd10_nodename' HSD10> SHO DIA2 HSD10> SHO MIRROR I don't have an HSD10 handy to see what else we would want, but I can get one if needed. Let's see what the above commands show first. Mark d.

    Nelson,
       Since VMS does cause the action to occur, open files is not likely.
    That would be true for a Host Based Shadowset, not a controller based
    mirrorset. It might be interesting to set host/dup to the HSD10 while
    the action is occurring and look at the mirrorset there.
    
    $ set host/dup/server=mscp$dup/task=params 'hsd10_nodename'
    HSD10> SHO DIA2
    HSD10> SHO MIRROR
    
      I don't have an HSD10 handy to see what else we would want, but I
    can get one if needed. Let's see what the above commands show first.
    
                    Mark d.