We just went through this. First, you need the lin_tape package from IBM. That has the device-specific drivers for the tape drives. You might have to find the source RPM and rebuild it to get a version that matches your kernel.
The zcfp.conf file has five fields, but only three are meaningful. Here's a sample: 0.0.0a00 0x01 0x50060482d52e5d48 0x01 0x0000000000000000 The first field is the device number, the second is meaningless, third is the WWPN of the tape drive (make sure you have your zoning right!), fourth field is also meaningless, and the last field is the LUN, which for real IBM tapes is supposedly always zero. Note that in the LUN, only the first two bytes are meaningful, so LUN 0001 would be coded as 0x0001000000000000. We were successful with real IBM drives, but when we tried an EMC VTAPE box that was supposed to emulate them, we got a kernel panic, so try defining the drives manually via SYSFS before setting up zfcp.conf, or you might end up with an unbootable system. -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Ayer, Paul W Sent: Tuesday, June 05, 2007 8:50 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: [LINUX-390] RHEL 4 - FCP - tape drives Hi Ray, Yes that's what I did cd /sys/bus/scsi/devices and did an ls ... empty also a cat /proc/scsi and cat /proc/scsi/scsi is empty too. lstape is blank. On the wwnn and wwpn side at first I was trying to use what filled in there when I echo'ed 1 to online but then on the vm console I would see an error. Later I was able to get the real wwnn and for the tape_controler and the wwpn for each of the two tape drives (putting them on 0.0.1a06 and 0.0.a107) Now when I try to start them there are no errors and also when I boot the System the boot messages say that SCSI is stating ok. I'm still a bit unsure as to how to setup the /etc/zfcp.conf format and am hopping that is my problem but again following the steps I the doc works fine for all the /sys/bus/scsi/drivers stuff but not the devices stuff. A vmcp q fcp does show 1a06 and 1a07 are attached. Thanks, -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Raymond Higgs Sent: Monday, June 04, 2007 6:00 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: RHEL 4 - FCP - tape drives Linux on 390 Port <LINUX-390@VM.MARIST.EDU> wrote on 06/04/2007 03:08:28 PM: > Hi Brad, > > Thanks for the info. > > I have been using the 1st document and all items work fine when doing > the commands to /sys/bus/drivers ... but when I move over to the > /sys/bus/scsi/devices .. is always empty. > > Paul > Paul, If you're having problems with commands like these: # cat /sys/bus/scsi/devices/0\:0\:1\:0/hba_id 0.0.010a # cat /sys/bus/scsi/devices/0\:0\:1\:0/wwpn 0x5005076300c18154 # cat /sys/bus/scsi/devices/0\:0\:1\:0/fcp_lun 0x5719000000000000 # cat /sys/bus/scsi/devices/0\:0\:1\:0/block/dev 8:0 # cat /sys/bus/scsi/devices/0\:0\:1\:0/block/sda1/dev 8:1 There are extra '\' characters in there. The SCSI device IDs should be written like 0:0:1:0. Go into the directory, and do an ls to see what your SCSI device IDs look like. Mine look like this: [EMAIL PROTECTED]:cd /sys/bus/scsi/devices [EMAIL PROTECTED]:ls 0:0:0:0 1:0:0:0 2:0:0:0 3:0:0:0 [EMAIL PROTECTED]:cat /sys/bus/scsi/devices/3:0:0:0/hba_id 0.0.c403 [EMAIL PROTECTED]:cat /sys/bus/scsi/devices/3:0:0:0/wwpn 0x500507630510477a [EMAIL PROTECTED]:cat /sys/bus/scsi/devices/3:0:0:0/fcp_lun 0x4011408100000000 Thanks, Ray Higgs System z FCP Development Bld. 706, B24 2455 South Road Poughkeepsie, NY 12601 (845) 435-8666, T/L 295-8666 [EMAIL PROTECTED] ---------------------------------------------------------------------- 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 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 -------------------------------------------------------- This message w/attachments (message) may be privileged, confidential or proprietary, and if you are not an intended recipient, please notify the sender, do not use or share it and delete it. 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