Many thanks to:
- Bruce Hines
- Alan Rollow
- Lucien Hercaud
- Oisin McGuinness
- Erik Personn
Original Question:
-----------------
In order to display the disks on the screen during start-up (or to
recall the shown messages, using the uerf cmd at a later time) it
was necessary to update /usr/sys/conf/<HOSTNAME> in DU V3.x. The line
that had to be included for a disk was i.e.:
device disk rz<xx> at scsi<y> drive<nn>
Is that true for V4 , too?
Answers:
-------
1) No, v4 will display all disks at startup.
2) No. Aside from a few quirks around getting I/O statistics and
handling boot disks in very early versions, it has never been
necessary to include device line to be able to use disks. Just
get scu(8) to find it, create the special file and away you
go.
3) In 4.0 it does it automatically ! In addition it will create the
corresponding entries as /dev/rrz*[a-h]. BUT: the controller (scsi# ...line)
MUST be present in the kernel config file, otherwise the controller and the
disks attached to it are not recognised. This means that when you add a new
scsi controller to the system you must
do a sizer and then doconfig to get the corresponding entry in the config
file (you can add it manually if you know exactly what you are doing and
then do doconfig -c directly).
4)No! You do of course have to have lines defining the SCSI controllers, but
the system both recognizes all disks and tapes, and makes all rz* devices
automatically.
Very convenient!
5) No. SCSI-buses need to be configured that way, but devices on them are
detected att boot.
Vincent Franceschini
Open Systems Storage Specialist
Hitachi Data Systems Europe
Sefton Park, Stoke Poges
Buckinghamshire, SL2 4HD, U.K.
Tel: +44 1753 618 000
Fax: +44 1753 618 550
Email: Vincent.Franceschini_at_hds.com
Received on Fri Oct 09 1998 - 17:59:06 NZDT