Sun Microsystems Sun Fire X4100, Примечания к продукту

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Software Issues 49
SLES9 64-Bit: System Does Not Boot With
Supported HBA Card Plugged Into Slot 0
(6307424)
On systems running SLES9, if a host bus adapter (HBA) card is plugged in to Slot 0,
you might not be able to boot the system. This is because SLES9 enumerates IDE and
SCSI devices in scan order, and the BIOS scans PCI devices in ascending order. The
scanning priority is:
1. NIC
2. Slot 0
3. SAS
4. Slot 2
5. Slot 3
6. Slot 4
7. Slot 1
If there is only one drive in the system, it is enumerated as
/dev/sda
. If an external
device is later connected to an HBA card in Slot 0, the device will be enumerated as
/dev/sda
and the internal device will be enumerated as
/dev/sdb
. However, the
SLES9 boot device points to
/dev/sda
, which is an external device without the OS,
and the system cannot boot.
The problem does not occur if the HBA card is plugged in to Slots 1-4, since these
slots are scanned later than the on-board SLI controller. This problem is not specific
to the server or the HBA card.
Workaround
Plug the supported HBA card in to Slots 1-4, and then reboot the system. Also,
follow these general guidelines:
■
Do not move SCSI drives around.
■
Do not change bus connections for IDE drives.
■
Have a rescue disk ready in case these guidelines are not followed, as you might
need to run
grub
or
vi /etc/fstab
afterwards.