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 |
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Rejoins a previously split mirrored volume set and starts repairs.
Syntax |
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JOINMIRRSET [SNAME=] volumesetname {SOURCE= {USER
BACKUP}}
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Parameters |
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- 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 |
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This example shows how to use the VOLUTIL JOINMIRRSET command.
volutil:JOINMIRRSET PROD_SET SOURCE=USER
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