I love this list! Two good answers within an hour from:
alan_at_nabeth.cxo.dec.com
Stephen Dowdy <dowdy_at_cs.colorado.edu>
My original posting had to do with our inability to label Iomega
Jaz disks on our DU 4.0 systems. Disklabel would refuse to
write a label from /etc/disktab to the disk no matter what we did,
but if we dd'ed the label from an rz26f to the disk we could use it.
In Alan's words:
There is (what I think is) a bug in the V4.0 disklabel
that prevents it from using a disktab entry from over-
riding the geometry and capacity information returned
from the DEVGETGEOM I/O control. Or more precisly, not
letting disktab override what isn't returned from
DEVGETGEOM. For well behaved SCSI devices, DEVGETGEOM
will get the geometry from the device. The JAZ drives
do not seem to be well behaved and don't put their
geometry in the expected place (if at all).
Before V4.0, DEVGETGEOM would have only been used when
a disktab entry didn't exist, but that was switched and
the bug added along the way. Contract the CSC to see
if there is patch yet.
I will be checking with DEC on the status of this later to day and
will post when a patch becomes avaiable.
In the meantime, Stephen notest that if you roll a disklabel by
hand, you can still write it to the disk using the '-R' option
of the disklabel command.
Thanks again,
Tom
--
+--------------------------------+------------------------------+
| Tom Webster | "Funny, I've never seen it |
| SysAdmin MDA-SSD ISS-IS-HB-S&O | do THAT before...." |
| webster_at_ssdpdc.mdc.com | - Any user support person |
+--------------------------------+------------------------------+
| Unless clearly stated otherwise all opinions are my own. |
+---------------------------------------------------------------+
Received on Fri Nov 15 1996 - 00:18:32 NZDT