On SPARC M8 servers, the USB host controller that connects SPs to the system might hang on device disconnect (for example, during SP failover). During the recovery process, while the USB host controller is not operating correctly, an FMA ereport (device inval_state) might be generated.
# fmdump -e TIME CLASS Sep 08 18:17:08.7644 ereport.io.device.inval_state # fmdump -eV TIME CLASS Sep 08 2017 18:17:08.764470128 ereport.io.device.inval_state nvlist version: 0 class = ereport.io.device.inval_state ena = 0x1bac0066167d2c01 detector = (embedded nvlist) nvlist version: 0 version = 0x0 scheme = dev cna_dev = 0x59b33a8000000011 device-path = /pci@304/pci@1/usb@0 (end detector) __ttl = 0x1 __tod = 0x59b34114 0x2d90e370
Recovery: You can safely ignore FMA ereports that are generated in this case.
Workaround: Issue the fmadm command to repair the faulted component.