Technical Staff Blog

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CIS Networking group is planning to make changes to the 10G switches, cit-cs-r14-sw-1 and cit-cs-r14-sw-2.  The switch config change requires a reboot.  They will be changing and rebooting the cit-cs-r14-sw-1 on Tuesday, June 21st at 5:30am and cit-cs-r14-sw-2 on Thursday, June 23rd at 6:00am.  The GPFS NSD nodes are connected to these switches.  Fortunately, the NSD nodes are redundant pairs and each pair has one member connected to each switch.  The switch reboot will not take down the GPFS filesystem.  We will shut down GPFS on the NSD nodes that are affected by the reboot and let its partner take over.  Once the reboot is done, we will bring back the affected NSD nodes into the GPFS cluster.