On Mon, Dec 20, 2010 at 09:12:42PM -0500, Sue Sivets wrote: > Can anyone tell me how to add a zfcp device to a Redhat 5.4 system? So > far, the little bit of documentation that I've found has been for use > during installation, or for older systems, or for version 6.0 systems. I > know very little about Redhat systems, but the information about zfcp > devices for the older systems doesn't seem to apply very well to version > 5.4, and the information for version 6 doesn't work for the 5.4 version, > probably due to system changes between the two releases. > > Can anyone tell me what commands I need to issue in order to add an fcp > device or can you point me towards some documentation? I have a cookbook > for Redhat 5.3 (which says it is ignoring fcp), and a cookbook for 6.0 > that looks like it's got some good info for adding fcp devices, but my > 5.4 system is not returning or displaying the information that the > cookbook says it should.
The basics are the same for every FCP setup: You need a FCP devno attached to the Linux system that is basically the "System z adapter" to the SAN. Then you need to know the WWPN of the storage system you want to access and the LUN (the 64 bit number of the storage volume you want to access). For accessing disk volume, you have to do this twice for different paths and setup multipathing. The details and commands for handling the zfcp setup in RHEL5 are documented here: http://www.ibm.com/developerworks/linux/linux390/october2005_documentation.html - "Device Drivers, Features, and Commands - SC33-8289-04", "Chapter 6. SCSI-over-Fibre Channel device driver" - "How to use FC-attached SCSI devices with Linux on System z" Redhat provides a configuration file /etc/zfcp.conf where you can put the WWPN/LUN configuration, see here: http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Installation_Guide/ap-s390info-Adding_FCP-Attached_LUNs-Persistently-Not_part_of_root_file_system.html Christof ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
