The Virtualization Cookbook for SLES 10 SP2 - z/VM - IBM

Perform the following steps:
► Start an SSH session as root to LINUX02.
► Verify that the zfcp module is loaded with the following command:
# lsmod | grep zfcp
zfcp 144433 0 [permanent]
scsi_transport_fc 68240 1 zfcp
scsi_mod 296490 3 zfcp,scsi_transport_fc,scsi_tgt
qdio 61977 3 zfcp,qeth_l3,qeth
► Change directory to /sys/bus/ccw/drivers/ and list the contents:
# cd /sys/bus/ccw/drivers
# ls -F
3215/ 3270/ dasd-eckd/ dasd-fba/ qeth/ vmur/
Note that there is no directory named zfcp/.
► Go back to the MAINT 3270 session and attach an FCP device to LINUX02 with the ATTACH
command:
==> att 3b16 linux02
FCP 3B16 ATTACHED TO LINUX02 3B16
► Return the the Linux SSH session and list the contents of the directory again. This time
you should see a new directory zfcp/:
# ls -F
3215/ 3270/ dasd-eckd/ dasd-fba/ qeth/ vmur/ zfcp/
► Change into that directory and list the contents:
# cd zfcp
# ls -F
0.0.3b16@ bind module@ uevent unbind
► Note that a symbolic link (identified by the trailing ampersand, @, after the file name in
conjunction the the -F flag of ls) to a new directory 0.0.3b16 . Change into that directory
and list the contents
# ls -F
availability cutype driver@ online subsystem@
cmb_enable devtype modalias power/ uevent
► Type the contents of the online file:
# cat online
0
A value of 0 shows that the device is offline.
► Echo a 1 into the file and it will be put online (you could also use the chccwdev -e
command):
# echo 1 > online
# cat online
1
► List the contents of the directory again. You should see that many entries were added
after the device was put online. The four entries in bold are the WWPNs available from
this FCP device.
# ls -F
0x5005076306138411/ cmb_enable host0/ peer_wwnn subsystem@
0x500507630613c411/ cutype in_recovery peer_wwpn uevent
0x500507630a10016c/ devtype lic_version port_remove
0x500507630a13016c/ driver@ modalias port_rescan
availability failed online power/
Chapter 13. Miscellaneous recipes 201