Comment 8 for bug 1547192

We have just encountered this issue on a large deployment on one random node, but it's not a Power8 machines -- just a regular HP DL360. Here's an excerpt from the log:

[ 15.623526] tty ttyS9: hash matches
[ 15.625028] rtc_cmos 00:00: setting system clock to 2017-06-07 00:45:20 UTC (1496796320)
[ 15.627839] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[ 15.629838] EDD information not available.
[ 15.631363] md: Waiting for all devices to be available before autodetect
[ 15.661880] md: If you don't use raid, use raid=noautodetect
[ 15.687911] md: Autodetecting RAID arrays.
[ 15.706358] md: Scanned 0 and added 0 devices.
[ 15.726206] md: autorun ...
[ 15.738696] md: ... autorun DONE.
[ 15.753535] VFS: Cannot open root device "disk/by-path/ip-10.144.10.62:3260-iscsi-iqn.2004-05.com.ub" or unknown-block(0,0): error -6
[ 15.807400] Please append a correct "root=" boot option; here are the available partitions:
[ 15.845000] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

I bet this is not actually a Power problem, but instead something which causes the iscsi mount to fail.