mike@sdcrdcf.UUCP (Michael Williams) (12/14/83)
I am running V7 kernel with Berkeley utilities, until my 2.9
tape arrives. I have two disk controllers, the 2nd is an SI
9900, with two 9766 300 Mbyte drives, keyed 1 and 2. (The first
is the usual with two RP04's, switched to 0 & 1). The SI drives
are emulating RP04's, which I believe means that they only read/write
from even tracks (thus 820 physical, 410 logical).
Problems:
1) When I run icheck (yes, remember that old goody ?)
on the raw device (e.g. rzp2a (I'll explain the zp
in a minute) it gives me "bad mode: 162"
"bad mode: 163"
etc. It always starts at block 162, and doesn't
complain about every eighth block (ie 161, 169, 177
etc are good). (Remember 8 inodes per block ?)
Icheck doesn't complain on the block device (zp2a).
2) When I run mkfs on this drive, the system "hangs",
regardless of the partition I am trying to create.
(I had been playing around with zp_sizes, trying to
get three or four filesystems of the same size).
Throwing the reset switch on the controller at this
point makes the read/write flash for a second. The
system is still hung. Throwing the switch again
frees the system and causes mkfs to go away.
The zp is a cludge, I used the slots in [bc]devsw from the rp
driver and filled them with "zp". Zp.c is a copy of hp.c
with a different {HP,ZP}ADDR for the second controller, and at
times different sizes tables. (oh yes, all the variables are changed
from hpcsr1 to something like zp1CntrlStatReg, and they are unique).
I hope to figure this out today, but I thought I'd post a note to see
if you'd seen it before.
Mike Williams
{allegra,cbosgd,hplabs,ihnp4,trw-unix}!sdcrdcf!mike
(805) 987-6811 x4528