CLI Guide

Table Of Contents

Description

Metro node examines path state information for LUNs on arrays. If the path state information is inconsistent, metro node

banishes the LUN, and makes it inaccessible.

Use this command to unbanish a banished LUN (storage volume).

Banished storage volumes (LUNs)

LUNs (storage volumes) are banished when metro node detects an unexpected configuration of array controllers or paths to

arrays. Under normal active/passive operation, one controller for any given LUN is active, the other is passive.

If the path to the active controller fails, the passive path transitions to active. The transition must wait for the failed active

controller to drain its pending I/Os. This transient state may be seen during disk replacement, hot sparing, and disk failure.

If the system detects a LUN in this state, it waits 20 seconds for the LUN to return to normal. If the LUN does not return to the

expected state, the system banishes the LUN.

Example

In the following example:

●

The list-banished command shows a volume is banished from director 1-1-A

● The unbanish command unbanishes the volume.

● The list-banished command shows the change:

VPlexcli:/> storage-volume list-banished --director director-1-1-A

There is 1 banished storage-volume on director 'director-1-1-A':

Symm0487_0C1B

VPlexcli:/clusters/cluster-1/storage-elements/storage-volumes/Symm0487_0C1B> storage-

volume unbanish --director director-1-1-A

director-1-1-A Unbanished.

VPlexcli:/clusters/cluster-1/storage-elements/storage-volumes/Symm0487_0C1B> storage-

volume list-banished --director director-1-1-A

There are no banished storage-volumes on director 'director-1-1-A'.