Adding MDisks to storage pools using the CLI
You can use the command-line interface (CLI) to add managed disks (MDisks) to storage pools.
Before you begin
- If the MDisk does not contain any extents in use by a volume
- If you can first migrate the extents in use onto other free extents within the group
About this task
If you are using a flash drive managed disk on your system, ensure that you are familiar with the flash drive configuration rules.
- Adding MDisks to a storage pool using the addmdisk command
- Creating a storage pool using the mkmdiskgrp -mdisk command
These tests include checks of the MDisk identity, capacity, status and the ability to perform both read and write operations. If these tests fail or exceed the time allowed, the MDisks are not added to the group. However, with the mkmdiskgrp -mdisk command, the storage pool is still created even if the tests fail, but it does not contain any MDisks. If tests fail, confirm that the MDisks are in the correct state and that they have been correctly discovered.
- The MDisk is not visible to all system nodes in the clustered system.
- The MDisk identity has changed from a previous discovery operation.
- The MDisk cannot perform read or write operations.
- The status of the MDisk can be either degraded paths, degraded ports, excluded, or offline.
- The MDisk does not exist.
- The disk controller system on which the MDisk resides is failing.
- A SAN fabric or cable fault condition exists that is preventing reliable communication with the MDisk.
Procedure
To add MDisks to storage pools, complete the following steps.