e450 detecting more than 4 disks
Hi there,
It's been some time I've been looking for information on this
problem on the usual places (debian sites, linux howtos, mailing
lists,...) but no luck. I hope you can help me.
I installed Potato (later upgraded to Woody, and compiled kernel
2.4.18) on a Sun Ultrasparc Enterprise 450 (e450) with a Symbios
Logic SYM22801 SCSI card on it. The machine has 12 SCSI disks and I
want a RAID1 or 5 on them.
In order to install Debian I had to take off one of the disks and
install it at another ultrasparc. Then install using an external CD
drive there (none of the internalCD/TFTP/Floppy installations worked
on the e450). Thus right now I have Linux booting from a single disk
(/dev/sda) and root=/dev/sda1 and it works fine with up to four
disks.
The problem is that booting stops after showing the following lines
when I attach a disk in a different bay (I think its called "SCSI
host" or LUN) for example a disk in "slot 0" and one in "slot 4",
however it works well with up to 4 disks (in slots 0,1,2 and 3)
only. Needless to say, the array worked well with Solaris8.x and a
RAID5 on all 12 disks.
...
md:linear personality registered as nr 1
md: raid1 personality registered as nr 3
md: multipath personality registered as nr 7
md: md driver 0.90.0 MAX_MD_DEVS=256 MD_SB_DISKS=27
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
LVM version 1.0.1-rc4(ish)(03/10/2001)
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP
IP routing cache hash table of 16384 buckets, 256Kbytes
TCP: Hash tables configured (established 262144 bind 65536)
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
VFS: Cannot open root device "sda1" or 08:01
Please append a correct "root=" boot option
Kernel panic: VFS: Unable to mount root fs on 08:01
Press L1-A to return to the boot prom
(BTW Stop-A doesn't work in this case)
Kernel 2.4.18 was compiled with all the options I could think off (SCSI
and RAID options, one built-in the rest in modules, all in modules, etc.)
What did I missed? I don't think it is a hardware problem. I cannot
continue with raid configuration (raidtools2 and so) withouth the
machine detecting the disks. (If life was simpler I'd think it is
SCSI LUN having the same number, but I think the SYM22801 should
take care of that, isn't it?)
Thanks for any suggestions and sorry for the long email.
=====
"Exactly, Watson. Pathetic and futile. But is not all life
pathetic and futile? Is not his story a microcosm of the
whole? We reach. We grasp. And what is left in our hands
at the end? A shadow. Or worse than a shadow -- misery."
RETI
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