In typical fashion, Sun-Managers have come through strongly and with
great insite.
Thankyou to all the following people for their replies...
But first the common answer: (Solaris specific)
Solaris and SunOS are designed to ALWAYS skip over the first
16 sectors of Cylinder 0, which is reserved for storage of the
Partition Table. If the partition is "ufs" this won't
(shouldn't) be a problem, as the OS is managing the table
space.
Any (most?) application that doesn't originate from Sun
and uses a non-ufs partition (RAW) MAY try to use the entire
cylinder (and Sybase is one of them) which will often result
in the table getting destroyed.
Resolution:
Most respondants suggested that the "0" Cylinder be ignored
whenever an application wants a raw partition and you wish to
use the first (0) slice for that partition.
Casper Dik also suggested that we swap our slice-scheme so that
our /opt partition is in slice 0 and the sybase raw partition
is in slice 1.
The original question: (in brief)
>I have a Sybase Developer using Solaris 2.5.1, all(?) current patches,
>on a SPARC5 server who has a problem with a drive label that seems to
>spontaneously reset to default definitions.
>
>(This isn't Sybase related.. as far as we can tell)
>
>The drive is a Seagate 4GB fast/narrow, very recent ECO (not sure
>exactly--yet)
<snip> (Sybdump is a raw sybase partition, this table has been
replaced 4+ times in one day with a default Solaris table)
>Our config:
>
> s0 /var/sybdump 2.2GB
> s1 /opt 1.7GB
> s2 backup slice 4GB
> s3 (sybindex) 52MB
> s4 (sybhash) 52MB
The list of respondants: (THANKS AGAIN, ALL!)
Deepak D Wilson <Deepak_D_Wilson@notes.seagate.com>
(Russ Poffenberger) poffen@San-Jose.ate.slb.com
Rick Reineman reineman1@llnl.gov
Sydney Weinstein <syd@myxa.com>
William T BoaTman <bboatman@uol.com>>
Casper Dik <casper@holland.Sun.COM>
Singh Adrian <singha@aah.co.uk>
Andrew Toon <andrew@traceplc.co.uk
Maes_Eric <emm@is.emea.eds.com>
(Ray Trzaska) rtrzaska@uk.mdis.com (Ray Trzaska)
"Matthew Stier" <Matthew.Stier@tddny.fujitsu.com>
Stephen P Richardson <spr@myxa.com>
"Nolan, Garrett" <Garrett.Nolan@wang.com>
Jim McVey <jmcvey@nhgri.nih.gov>
Rogerio Rocha <rogerio@bvl.pt>
Mark Thomas <markt.thomas@hsc.hac.com>
-- Jim Harmon The Telephone Connection jim@telecnnct.com Rockville, Maryland
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