This could be a disastrous situation. Say you were asked to rebuild a box
from some decommissed box. and Volia someone didn't ummap the SAN disks during
the decom process. Not thinking to check and trusting your colleague. You
rebuild it via PXE or an ISO image. then... you discovered the OS picked one of
the SAN disks to install the OS. If the disk is part of a live database, doesn't
matter if there is I/O fencing set up on the cluster. The data is not protected
and the database would be corrupted...
The morale?
boot with blacklisting the HBA drivers, common ones are qla2xxx or lpfc at
the boot prompt.
"blacklist=qla2xxx,lpfc"
PXE needs to be fixed....
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