CMMVC8483E: The host I/O group cannot be removed because at least one volume in the I/O group(s) being removed from the host has received I/O within the defined volume protection period.

Explanation

If volume protection is enabled, but any volume mapped to the host in the removal candidate I/O group has received I/O recently (within the defined volume protection time period), the host I/O group removal command, rmhostiogrp, fails.

This behavior is not affected by the force parameter of the command. The force parameter deletes from a host the I/O groups that have volume mappings. The force parameter does not overrride the volume protection policing.

Removing a host I/O group behaves the same way as does removing a host in that the policing behavior allows the removal of an I/O group if the host is offline, and if one other host is mapped to the volume. The policing policy does not allow removing the I/O group if the host is the only host mapped to the volume and the volume is busy.

User Response

1. Ensure that the host I/O group is intended to be unmapped. If you selected the wrong host I/O group , repeat the removal command with the correct host I/O group.
2. To unmap the volumes in the host I/O group and remove the I/O group, ensure that no host I/O is sent to the volumes, wait the time specified in the vdisk_protection_time field in the lssystem command since the last I/O was received, then retry the host I/O group removal command.
3. To disable volume protection and its warnings, disable the vdisk_protection-enabled field in the chsystem command.