SCF Reference Manual for the Storage Subsystem (G06.28+, H06.05+, J06.03+)

The ADD DISK Command Fails
An ADD DISK command can fail if a record for the given name exists or if the SMF Master Process
already has a definition for a virtual disk of the given name.
For example, if SCF successfully adds the configuration record but then cannot define the process
by using the SMF Master Process, SCF attempts to delete the configuration records. If this action
fails, SCF puts out a message to warn that configuration records remain although there is no
definition in the SMF Master Process.
This inconsistency can also occur if a processor failure happens after the configuration records are
added but before the defining with the SMF Master Process is done.
To recover, delete the incorrect entry. See “Deleting a Virtual Disk” (page 150). If the DELETE
command fails, alter the STARTSTATE attribute to STOPPED to ensure that the process does not
unexpectedly start.
Storage Subsystem Message 9026
If you get storage subsystem message 9026 while adding a storage pool process or virtual disk,
the error is caused by an inconsistency between SMF and the system configuration database (the
storage pool or virtual disk is defined in SMF but is not defined in the system configuration
database). In this case, you can:
• Add the storage pool or virtual disk without using the SMF attributes.
• Add the storage pool or virtual disk using the same attributes that are defined in SMF.
Altering Virtual Disk Attribute Values
The “ALTER DISK Command” (page 228) changes configured attributes for a virtual disk.
Considerations for ALTER DISK and Virtual Disks
• The process must be in the STOPPED state or not running before you can change its
configuration.
• Changes take effect when you restart the process.
• All configuration changes related to SMF require that:
TMF must be running on the system.◦
◦ The SMF master process ($ZSMS) must be in the STARTED state.
◦ The CATALOGLOCATION volume of the SMF Master Process must be in the STARTED
state and enabled by TMF.
Example
1. Display detailed information about the configured attributes of the disk you want to alter:
-> INFO $VDISK00, DETAIL
An asterisk (*) marks those attributes you can alter.
2. Stop the disk process:
-> STOP $VDISK00
3. Change one or more Virtual Disk Attributes for the “ALTER DISK Command” (page 228). For
example, this command changes the maximum size of the audited name table:
-> ALTER $VDISK00, ANTCAPACITY 1000000
4. Verify the change is entered into the system configuration database:
-> INFO $VDISK00, DETAIL
Configuring a Virtual Disk 149