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JOINMIRRSET [ Mirrored Disk/iX User's Guide ] MPE/iX 5.0 Documentation


Mirrored Disk/iX User's Guide

JOINMIRRSET 

The new VOLUTIL JOINMIRRSET command joins a mirrored volume set that was
previously split through the VSCLOSE ;SPLIT command.  It also starts a
repair in the direction specified by the SOURCE parameter.  Ideally, all
user volumes and backup volumes belonging to the original volume set are
mounted; however, volumes may be unavailable for a variety of reasons:
disk error, power failure, operator error.  Refer to "Troubleshooting,"
in chapter 4 of this manual.

The user volumes should typically be selected as the source volumes since
they contain the most recent copy of the data; however, the volumes
chosen as the source volumes must be complete (that is, there can be no
disabled or missing volumes).  If the user volumes are incomplete and
cannot be used as the source, the backup volumes can alternatively be
chosen; however, this results in losing any changes made to the user
volumes since the split.

This command is part of the VOLUTIL utility program.  Pressing CTRLY or
Break has no effect on this command.

Task 

Rejoins a previously split mirrored volume set and starts repairs.

Syntax 

JOINMIRRSET [SNAME=] volumesetname {SOURCE= {USER  }}
                                   {        {BACKUP}}
Parameters 

volumesetname         The volume set name of the split-volume set to be
                      joined.  Required. 

SOURCE                The volume set half to be used as the source
                      volumes for the repair.  Required. 

                      USER                  Use user volumes as source,
                                            backup volumes as
                                            destination.

                      BACKUP                Use backup volumes as source,
                                            user volumes as destination.

                      The volume set half specified as the source must be
                      complete, or the join fails.  If any of the
                      destination volumes are missing, the partner source
                      volume is suspended (if SOURCE=USER), and no repair
                      is done for the pair.

                      If SOURCE=USER is specified, users can continue to
                      access the volume set while the join is initiated
                      and the repair takes place.

                      If SOURCE=BACKUP is specified, all users must be
                      logged off the volume set prior to executing this
                      command so that the user volumes can be implicitly
                      closed during the join.

Example 

This example shows how to use the VOLUTIL JOINMIRRSET command.
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|                                               |
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|      volutil:JOINMIRRSET PROD_SET SOURCE=USER |
|                                               |
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MPE/iX 5.0 Documentation