10–Configuring Fibre Channel Over Ethernet
FCoE Boot from SAN
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4.
If the initiator logs into the fabric, but is unable to log into the target, a
CTRL+R pauses the boot process and allows you to configure fabric zoning.
After zoning is complete, the initiator will automatically log into all visible
targets.
5.
If the initiator is unable to discover the designated LUN on the designated
target as provisioned in
, CTRL+R pauses the boot process and
allows you to configure selective LUN presentation.
The boot initiator periodically polls the LUN for readiness, and after the user
has provisioned access to the LUN, the boot process continues
automatically.
One-time Disabled
Cavium’s FCoE ROM is implemented as boot entry vector (BEV), where the
Option ROM only connects to the target after it has been selected by BIOS as the
boot device. This behavior is different from other implementations that will connect
to the boot device even if another device has been selected by the system BIOS.
For OS installation over the FCoE path, you must instruct the Option ROM to
bypass FCoE and skip to CD/DVD installation media. As instructed earlier, the
boot order must be configured with Cavium boot first and installation media
second. Furthermore, during OS installation, it is required to bypass the FCoE
boot and pass through to the installation media for boot. Do so by one-time
disabling the FCoE boot ROM from booting, and not by simply allowing the FCoE
ROM to attempt to boot and allowing the BIOS to fail through and boot the
installation media.
Finally, it is required that the FCoE ROM successfully discover and test the
readiness of the requested boot LUN for installation to proceed successfully.
Failure to allow the boot ROM to discover the LUN and do a coordinated bypass
will result in a failure to properly install the OS to the LUN. To affect this
coordinated bypass, do one of the following:
After the FCoE boot ROM discovers a ready target LUN, it will prompt you to
press CTRL+D within four seconds to
Stop booting from the target
. Press
CTRL+D, and proceed to boot from the installation media.
From CCM, set the
Option ROM
setting under MBA settings to
One Time
Disabled
. With this setting, the FCoE ROM loads once and automatically
bypasses when the ready LUN is discovered. On the subsequent reboot
after installation, the option ROM automatically reverts to
Enabled
.
NOTE
Using CTRL+R does not preclude the need to put the boot initiator into
one-time disabled mode as described in