8-50 System Upgrade
Configure SCSI topology
If you expanded the Fibre Channel Controller to the PCI slot, configuration of the topology is
needed. Follow the procedure below to set the SCSI topology:
1. Decide the domain number on which the setting is performed from the /proc/scsi/scsi file and
the /proc/scsi/topo file. Execute the following command from the shell:
echo setdomain number > /proc/scsi/topo
2. Decide any SCSI bus number which is not used, and then execute the following command
from the shell:
echo bus number_type PCI_BUS_NO:PCI_SLOT_NO.CHANNEL_NO > /proc/scsi/topo
number is a SCSI bus number. type is a device type (e.g., qla2x00). PCI_BUS_NO is ‘01’ for
the Fibre Channel controller of the PCI module 1, ‘40’ for the Fibre Channel controller of the
PCI module 2. PCI_SLOT_NO is a number of PCI slots (in ascending order (0, 1, 2…) from
the left). CHANNEL_NO is a channel number (the first channel is ‘00’). For the set of “type”
and “PCI_BUS_NO:PCI_SLOT_NO.CHANNEL_NO”, if there are more than one paths to a
single SCSI bus, specify all of them
3. Repeat step 2 if there is another SCSI bus on the same domain.
4. Confirm the setting on /proc/scsi/topo, and then execute the following command to save the
topology:
ftdisk topology-save
The topology setting will be restored at restart.
CHECK:
When deleting setting items of the topology, delete the saved topology file from
“rm /opt/nec/ftras/etc/scsi-topology.save”. Restart the system and then perform the setting from
step 1 again.
