Explanation
If volume protection is enabled, and the host being
deleted is mapped to any volume that has received I/O within the defined
volume protection time period, the host deletion command fails. This
policing behavior protects I/O integrity.
This policing behavior:
- Does not occur when multiple hosts are mapped to the same volume,
and the host being removed is already offline
- Is not overridden by using the force flag
- Prevents the last host being removed regardless of whether the
host is online or not, which improves the policing behaviour for clustered
hosts
User Response
- Ensure that you intend to remove the host. If you selected the
wrong host, repeat the command with the correct host.
- To remove the host, ensure that no host I/O is sent to any volume
mapped to the host, wait the time that is specified in the vdisk_protection_time
field in the lssystem command, then retry the volume
removal command.
- Alternatively, to disable volume protection warnings and behavior,
disable the vdisk_protection-enabled field using the chsystem command,
then retry the host removal command.