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Upgrading disk controller firmware

You can upgrade disk controller firmware without performing a system reboot or unloading the VxVM drivers.

First obtain the appropriate firmware upgrades from your disk drive vendor. You can usually download the appropriate files and documentation from the vendor's support website.

 To upgrade the disk controller firmware

1. Disable the plex that is associated with the disk device:

   # /opt/VRTS/bin/vxplex -g diskgroup det plex

   (The example is a volume mirrored across 2 controllers on one HBA.)

2. Stop I/O to all disks through one controller of the HBA:

   # /opt/VRTS/bin/vxdmpadm disable ctlr=first_cntlr

   For the other controller on the HBA, enter:

   # /opt/VRTS/bin/vxdmpadm -f disable ctlr=second_cntlr

3. Upgrade the firmware on those disks for which the controllers have been disabled using the procedures that you obtained from the disk drive vendor.
4. After doing the upgrade, re-enable all the controllers:

   # /opt/VRTS/bin/vxdmpadm enable ctlr=first_cntlr

   # /opt/VRTS/bin/vxdmpadm enable ctlr=second_cntlr

5. Re-enable the plex associated with the device:

   # /opt/VRTS/bin/vxplex -g diskgroup att volume plex

   This command takes some time depending upon the size of the mirror set.