jeb@gamma.UUCP (04/14/87)
We have a VAX 8650 running ULTRIX. There are 4 TU78 tape units attached. There are 2 master and 2 slave units. They are cabled as follows: Unit 0 has a controller cabled as slave 0 to its controller Unit 1 is a slave cabled to controller on unit 0 as slave 1 Unit 2 has a controller cabled as slave 2 to its controller Unit 3 is a slave cabled to controller on unit 2 as slave 3 The first question, are they cabled correctly? The following is the entries in the configuration file for the tape units: controller mba0 at nexus ? master mt0 at mba? drive ? tape mu0 at mt0 slave 0 tape mu1 at mt0 slave 1 master mt1 at mba? drive ? tape mu2 at mt1 slave 2 tape mu3 at mt1 slave 3 Second question, is this configuration correct? The following is the output for the mba from the boot of the system. mba0 at address 0x22014000 mt0 at mba0 drive 0 mu0 at mt0 slave 0 mu1 at mt0 slave 1 mt1 at mba0 drive 1 mu2 at mt1 slave 2 mu3 at mt1 slave 3 The problem we are having is that we can't get to the units on the second controller (mt1). Here are the following devices in the /dev directory assigned to the tape units: crw-rw-rw- 1 root 19, 0 Mar 27 06:48 /dev/rmt0 crw-rw-rw- 1 root 19, 1 Mar 27 06:48 /dev/rmt1 crw-rw-rw- 1 root 19, 2 Apr 13 20:52 /dev/rmt2 crw-rw-rw- 1 root 19, 3 Mar 27 06:56 /dev/rmt3 crw-rw-rw- 1 root 19, 4 Mar 27 06:48 /dev/rmt4 crw-rw-rw- 1 root 19, 5 Mar 27 06:48 /dev/rmt5 crw-rw-rw- 1 root 19, 6 Mar 27 06:49 /dev/rmt6 crw-rw-rw- 1 root 19, 7 Mar 27 06:49 /dev/rmt7 crw-rw-rw- 1 root 19, 8 Apr 13 22:02 /dev/rmt8 crw-rw-rw- 1 root 19, 9 Apr 13 20:45 /dev/rmt9 crw-rw-rw- 1 root 19, 10 Apr 13 20:47 /dev/rmt10 crw-rw-rw- 1 root 19, 11 Apr 13 20:47 /dev/rmt11 crw-rw-rw- 1 root 19, 12 Mar 27 06:48 /dev/rmt12 crw-rw-rw- 1 root 19, 13 Mar 27 06:48 /dev/rmt13 crw-rw-rw- 1 root 19, 14 Mar 27 06:49 /dev/rmt14 crw-rw-rw- 1 root 19, 15 Mar 27 06:49 /dev/rmt15 Is there anyone out in netnews land who is doing something similar? Also, is more than one tape controller supported by ULTRIX?