Managing Shared Disks
Follow these steps to migrate virtual shared disk data to a twin-tailed
recoverable virtual shared disk.
- Bring down any application that uses the old virtual shared disks for the
duration of this migration.
- Suspend, stop, and unconfigure all virtual shared disks involved.
- Add the new physical disks to your hardware configuration, using the
instructions that came with them.
- Create the new volume groups, logical volumes, and virtual shared
- Perform test reads and writes to make sure you've successfully
created your new virtual shared disks.
- Copy your data from your existing (old) virtual shared disks to the
newly-defined virtual shared disks by copying the data directly from one
logical volume to the other, using the new volume group name. For
cplv [-v new_volume_group]-y new_logical_volume \
- After making sure that the data is copied to the new logical volume,
remove the old virtual shared disk.
- Issue a reset to make all the virtual shared disks in the configuration
active and start the IBM Recoverable Virtual Shared Disk subsystem.
- If you are using data striping, the process of creating the new hashed shared
disks also creates the underlying virtual shared disks.
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