Gordon, What, exactly, fixed the problem? The reason I ask is because I got an offline email pointing out that /dev/rtibm0 and /dev/ntibm0 were both character devices with the same major and minor numbers, and that should _not_ work. Was it just using the "0" suffix and not "1" that made things happen?
Mark Post -----Original Message----- From: Wolfe, Gordon W [mailto:[EMAIL PROTECTED]] Sent: Friday, March 15, 2002 12:52 PM To: [EMAIL PROTECTED] Subject: Re: ipl tape Thanks. This solved my problem. Thanks to all who responded. "You do not need a parachute to skydive. You only need a parachute to skydive twice." -Motto of the Darwin Society Gordon W. Wolfe, Ph.D. (425) 865-5940 VM Technical Services, The Boeing Company > ---------- > From: Post, Mark K > Reply To: Linux on 390 Port > Sent: Wednesday, March 13, 2002 8:35 PM > To: [EMAIL PROTECTED] > Subject: Re: ipl tape > > Gordon, > > According to what I read in the Distributions Redbook, "ntibm0" is the > _first_ non-rewinding tape drive, and "ntibm1" would be the second one. > So, > if you only have one, you should probably be using "ntibm0" as the device: > Since Linux for S/390 distributions may not include any tape devices, the > following commands may be used to create a Linux device for each available > tape device: > #mknod /dev/rtibm0 c 254 0 (first rewinding character device) > #mknod /dev/ntibm0 c 254 0 (first non-rewinding character device) > #mknod /dev/btibm0 b 254 0 (first block device) > #mknod /dev/rtibm1 c 254 1 (second rewinding character device) > #mknod /dev/ntibm1 c 254 1 (second non-rewinding character device) > #mknod /dev/btibm1 b 254 1 (second block device) > > How that corresponds to Sergey's success using ntibm1, I don't know. But, > it may be worth a try. > > Mark Post > > -----Original Message----- > From: Wolfe, Gordon W [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, March 13, 2002 4:55 PM > To: [EMAIL PROTECTED] > Subject: Re: ipl tape > > > I decided to use this as a basis for experimenting with tapes since we > haven't got to that yet. Using SuSE SLES7, I had a running system. > > From another VM userid on the same system, > > VMTAPE MOUNT SCRATCH DSN Linux.tape.test ( retpd 5 label nl > CP GIVE 181 to LINUXSRV 181 > > Then, from root on the linux machine > > insmod tape390 tape=181 Using > /lib/modules/2.4.7-SuSE-SMP/kernel/drivers/s390/char/tape390.o > > From the 3270 console of the server, I see > T390:IBM S/390 Tape Device Driver (v1.01). > T390:(C) IBM Deutschland Entwicklung GmbH, 2000 > T390:character device frontend : built in > T390:block device frontend : built in > T390:support for 3480 compatible : built in > T390:support for 3490 compatible : built in > T390:Using ranges supplied in parameters, disabling autoprobe > mode. > TCHAR:<3> tape gets major 254 for character device > TBLOCK:<3> tape gets major 254 for block device cd /devmknod > ntibm1 > c 254 1 (Confirmed /dev/ntibm1 really is there)cd /hometar > -cvf > /dev/ntibm1 ./patchestar: /dev/ntibm1: Cannot open: No such devicetar: > Error > is not recoverable: exiting nowroot@linuxsrv-/home # (no > additional messages on the console) > > Obviously, I'm doing something wrong. Any idea what? > > "You do not need a parachute to skydive. You only need a parachute to > skydive twice." -Motto of the Darwin Society > Gordon W. Wolfe, Ph.D. (425) 865-5940 > VM Technical Services, The Boeing Company > > > > ---------- > > From: Sergey Korzhevsky > > Reply To: Linux on 390 Port > > Sent: Wednesday, March 13, 2002 5:58 AM > > To: [EMAIL PROTECTED] > > Subject: I made it (Was: ipl tape) > > > > > > 12.03.2002 15:29:24 Linux on 390 Port ???????(?): > > > > Hello Jim! > > > > You are almost right. I look at source code and found, that > > > > minor number 0 for rewinding, > > minor number 1 for non-rewinding. For the same device, of course. > > > > For second device, I thing, it will be 2&3. > > > > Now, I can describe all the way. > > > > 1) insmod tape390 tape=<address> > > > > Driver uses major number 254 (in my case) > > > > 2) cd /dev; mknod ntibm1 c 254 1 > > > > 3) mt -f /dev/ntibm1 rewind > > > > 4) dd if=image of=/dev/ntibm1 bs=1024 # write kernel > > image > > mt -f /dev/ntibm1 eof 1 > > # > > write EndOfFile mark > > > > dd if=parmfile of=/dev/ntibm1 bs=1024 # write parmfile > > mt -f /dev/ntibm1 eof 1 > > # > > write EndOfFile mark > > > > dd if=initrd of=/dev/ntibm1 bs=1024 # write > > ramdisk > > image > > mt -f /dev/ntibm1 eof 2 > > # > > write EndOfFile mark twice - for sure :) > > > > > > 5) mt -f /dev/ntibm1 rewind > > > > You have the correct tape. Easy :) > > > > > > >Sergey, > > > > > >I don't have the source for tape390.o, but if it's modeled after SCSI > > tape > > >support, the minor device number should be 128+n for a non-rewinding > > >device, just 128 in your case. Minors between 0-127 all rewind. > > > > > > > > >
