Dear NetBSD/i386:

It seems the disklabels created by NetBSD/alpha and NetBSD/i386 
aren't compatible?  I tried two experiments:

1) installed NetBSD/alpha 1.5.2 on a SCSI disk in a PWS 500a, then connected
    the disk to an Adaptec 2940UW SCSI controller in a PC running NetBSD/i386
    1.5.2.  I thought I'd be able to mount the SCSI disks two 4.2BSD partitions
    under the IDE system disk's file system but I couldn't access a, only d.

2) installed NetBSD/i386 1.5.2 on a SCSI disk in a PC, then connected the disk
    to an AlphaStation 200 4/166 running NetBSD/alpha 1.5.2.  I couldn't access
    a or d.

I've appended the output of disklabel(8) and mount(8) to the end of 
this message.

I thought the different ports of NetBSD would all(?) use ffs file 
systems and it would be possible for them to mount each others 
partitions.


Ray



Alpha disk on alpha
-------------------
# disklabel sd2
# /dev/rsd2c:
type: unknown
disk: mydisk
label:
flags:
bytes/sector: 512
sectors/track: 113
tracks/cylinder: 20
sectors/cylinder: 2260
cylinders: 3708
total sectors: 8380080
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0           # microseconds
track-to-track seek: 0  # microseconds
drivedata: 0

8 partitions:
#        size   offset     fstype   [fsize bsize cpg/sgs]
   a:   262160        0     4.2BSD     1024  8192    16   # (Cyl.    0 - 115)
   b:  2092760   262160       swap                        # (Cyl.  116 - 1041)
   c:  8380080        0     unused        0     0         # (Cyl.    0 - 3707)
   d:  6025160  2354920     4.2BSD     1024  8192    16   # (Cyl. 1042 - 3707)


Alpha disk on PC
----------------
# disklabel sd0
# /dev/rsd0d:
type: SCSI
disk: RZ1CF-AF (C) DE
label: fictitious
flags:
bytes/sector: 512
sectors/track: 113
tracks/cylinder: 20
sectors/cylinder: 2260
cylinders: 3708
total sectors: 8380080
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0           # microseconds
track-to-track seek: 0  # microseconds
drivedata: 0

4 partitions:
#        size   offset     fstype   [fsize bsize cpg/sgs]
   d:  8380080        0     unused        0     0         # (Cyl.    0 - 3707)
disklabel: boot block size 0
disklabel: super block size 0
# mount /dev/sd0a /mnt
mount: cannot open `/dev/sd0a': Device not configured


PC disk on PC
-------------
# disklabel sd0
# /dev/rsd0d:
type: unknown
disk: mydisk
label:
flags:
bytes/sector: 512
sectors/track: 108
tracks/cylinder: 11
sectors/cylinder: 1188
cylinders: 3511
total sectors: 4194995
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0           # microseconds
track-to-track seek: 0  # microseconds
drivedata: 0

8 partitions:
#        size   offset     fstype   [fsize bsize cpg/sgs]
   a:  1091664      108     4.2BSD     1024  8192    16   # (Cyl.    0*- 918)
   b:  2099196  1091772       swap                        # (Cyl.  919 - 2685)
   c:  4194887      108     unused        0     0         # (Cyl.    0*- 3531*)
   d:  4194995        0     unused        0     0         # (Cyl.    0 - 3531*)
   e:  1004027  3190968     4.2BSD     1024  8192    16   # (Cyl. 2686 - 3531*)


PC disk on alpha
----------------
# disklabel sd2
# /dev/rsd2c:
type: SCSI
disk: ST32550W SUN2.1
label: fictitious
flags:
bytes/sector: 512
sectors/track: 108
tracks/cylinder: 11
sectors/cylinder: 1188
cylinders: 3511
total sectors: 4194995
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0           # microseconds
track-to-track seek: 0  # microseconds
drivedata: 0

3 partitions:
#        size   offset     fstype   [fsize bsize cpg/sgs]
   c:  4194995        0     unused        0     0         # (Cyl.    0 - 3531*)
disklabel: boot block size 0
disklabel: super block size 0
as200# mount /dev/sd2a /mnt
mount: cannot open `/dev/sd2a': Device not configured
as200# mount /dev/sd2d /mnt
mount: cannot open `/dev/sd2d': Device not configured