If a guest domain on a SPARC M8 or T8 server stores its OS in a remote storage device, rebooting the guest domain loads the OS from the storage device to system's memory over network using FCode and iSCSI protocol. Subsequent and repeated reboots of the guest domain might produce the following error on the console, after which the reboot fails and the guest domain (I/O domain) hangs up:
Failed to write to Admin Rx Queue Regs ERROR: Last Trap: Fast Data Access MMU Miss ERROR: Last Trap: Fast Data Access MMU Miss ...
Recovery: Recover the hung guest domain by running the following sequence of LDOM commands from the primary (control) domain:
ldm stop -f IO domain ldm unbind IO domain ldm set-var pci-probe-policy=required IO domain ldm rm-io ldm bind IO domain ldm start IO domain