Using The Zfcp Driver - Red Hat ENTREPRISE LINUX 5 Installation Manual

Chapter 22. Additional Information for IBM System z Users
to devices by their sysfs name. On a 2.4 kernel image, the zFCP driver was passed as its device
addresses. On the 2.6 Kernel image system the driver is passed as 0.0.1600.

22.2. Using the zFCP Driver

During the initial installation, you are prompted to enter SCSI/FCP information. If this information is
entered, it creates the /etc/zfcp.conf file which contains your SCSI configuration. It also adds the
line alias scsi_hostadapter zFCP to /etc/modprobe.conf. This loads the required zFCP
modules.
# cat ­/etc/zfcp.conf
0.0.010a 0x01 0x5005076300c18154 0x00 0x5719000000000000
# cat ­/etc/modprobe.conf
alias eth0 qeth
options dasd_mod dasd=201,4b2e
alias scsi_hostadapter zfcp
If no SCSI devices were defined during the initial installation, the following example demonstrates how
to add one manually:
# cd ­/lib/modules/2.6.7­1.451.2.3/kernel/drivers/s390/scsi
# modprobe zfcp
# lsmod
Module
zfcp
autofs4
qeth
qdio
ccwgroup
ipt_REJECT
ipt_state
ip_conntrack
iptable_filter
ip_tables
sd_mod
scsi_mod
dm_mod
ext3
jbd
dasd_fba_mod
dasd_eckd_mod
dasd_mod
# cd ­/sys/bus/ccw/drivers/zfcp/0.0.010a
# echo 1 > online
# cat online
1
# echo 0x5005076300c18154 > ­/sys/bus/ccw/drivers/zfcp/0.0.010a/port_add
# ls
0x5005076300c18154 failed
availability fc_link_speed
card_version fc_service_class
cmb_enable fc_topology
cutype hardware_version
detach_state host2
devtype in_recovery
232
Size Used by
221460 0 [permanent]
39944 0
166288 0
60240 3 zfcp,qeth
25344 1 qeth
23552 1
18944 5
57904 1 ipt_state
19712 1
37888 3 ipt_REJECT,ipt_state,iptable_filter
39688 0
182904 2 zfcp,sd_mod
86408 0
179056 2
92720 1 ext3
25344 0
77056 4
85328 6 dasd_fba_mod,dasd_eckd_mod
lic_version
nameserver
online
port_add
port_remove
scsi_host_no
serial_number
s_id
status
wwnn
wwpn