第 39 章 Modifying Link Loss Behavior

过程 39.1. Determining The State of a Remote Port

1. To determine the state of a remote port, run the following command:

   $ cat
   /sys/class/fc_remote_port/rport-H:B:R/port_state

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2. This command will return Blocked when the remote port (along with devices accessed through it) are blocked. If the remote port is operating normally, the command will return Online.
3. If the problem is not resolved within dev_loss_tmo seconds, the rport and devices will be unblocked and all I/O running on that device (along with any new I/O sent to that device) will be failed.

过程 39.2. Changing dev_loss_tmo

• To change the dev_loss_tmo value, echo in the desired value to the file. For example, to set dev_loss_tmo to 30 seconds, run:

  $ echo 30 >
  /sys/class/fc_remote_port/rport-H:B:R/dev_loss_tmo

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