HP 3PAR StoreServ 7450 Storage Service Guide

C Node Rescue
Automatic Node-to-Node Rescue
Automatic node-to-node rescue is started automatically when a node is removed then replaced in
a storage system and when there is at least one node in the cluster, perform either auto node-to-node
rescue.
Auto node rescue also requires that an Ethernet cable be connected to the node to be rescued
prior to insertion, along with the currently configured Ethernet connections on the running nodes.
NOTE: Always perform the automatic node rescue procedures unless otherwise instructed.
NOTE: When performing automatic node-to-node rescue, there may be instances where a node
is to be rescued by another node that has been inserted but has not been detected. If this happens,
issue the CLI command, startnoderescue –node <nodenum>. Before you do, you must have
the rescue IP address. This is the IP address that is allocated to the node being rescued and must
be on the same subnet as the SP.
Use the showtask -d command to view detailed status regarding the node rescue:
root@1400461-0461# showtask -d
Id Type Name Status Phase Step ----StartTime---
----FinishTime---- Priority User
4 node_rescue node_0_rescue done --- --- 2012-04-10 13:42:37 PDT 2012-04-10
13:47:22 PDT n/a sys:3parsys
Detailed status:
2012-04-10 13:42:37 PDT Created task.
2012-04-10 13:42:37 PDT Updated Running node rescue for node 0 as 1:8915
2012-04-10 13:42:44 PDT Updated Using IP 169.254.136.255
2012-04-10 13:42:44 PDT Updated Informing system manager to not autoreset node 0.
2012-04-10 13:42:44 PDT Updated Resetting node 0.
2012-04-10 13:42:53 PDT Updated Attempting to contact node 0 via NEMOE.
2012-04-10 13:42:53 PDT Updated Setting boot parameters.
2012-04-10 13:44:08 PDT Updated Waiting for node 0 to boot the node rescue kernel.
2012-04-10 13:44:54 PDT Updated Kernel on node 0 has started. Waiting for node
to retrieve install details.
2012-04-10 13:45:14 PDT Updated Node 32768 has retrieved the install details.
Waiting for file sync to begin.
2012-04-10 13:45:36 PDT Updated File sync has begun. Estimated time to complete
this step is 5 minutes on a lightly loaded system.
2012-04-10 13:47:22 PDT Updated Remote node has completed file sync, and will
reboot.
2012-04-10 13:47:22 PDT Updated Notified NEMOE of node 0 that node-rescue is done.
2012-04-10 13:47:22 PDT Updated Node 0 rescue complete.
2012-04-10 13:47:22 PDT Completed scheduled task.
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