SUMMARY: Solaris 2.5 and Veritas File System

From: Trevor Paquette (TrevorPaquette@aec.ca)
Date: Wed Jul 24 1996 - 13:21:49 CDT


Sorry for the lateness on this one..

>I have heard rumors that there are problems with Solaris 2.5 and the
>Veritas File System. Can anyone confirm or deny these rumors and if true,
>to what extent to the problems show up as? Corrupted Files? Slow Transfers?
>
>I will summerize.
>
> Thanx.
>
>--
> Name:Trevor Paquette |Network ServiCenters |Work:(403) 542-2355
>Email:TrevorPaquette@nsci.net|600, 777 8th Ave SW | Fax:(403) 290-8400
> postmaster@aec.ca |Calgary, Ab, Canada |ICBM:51'05"N/114'01"W
> root@aec.ca |T2P 3R5 |Mind:In the Rockies..

Basically.. There were problems with VxFS 2.2 and Solaris 2.5, but all should be fixed
in VxFS 2.2.1

Thanx to the following for responding:
From: Nikos George <george@pop.psu.edu>
From: dgthoma@sandia.gov (Darrell G. Thomas)
From: iv08480@issc02.mdc.com (Colin Melville)
From: gmp@adc.com (Gregory M Polanski)
From: "Brian Graham" <briang@msmail.datalytics.com>
From: "Roger B.A. Klorese" <rogerk@veritas.com>
From: jgotobed@LPL.Arizona.EDU (Joe Gotobed)
From: Pug <pug@arlut.utexas.edu>

----------
From: Nikos George <george@pop.psu.edu>
The only thing I've heard is that you absolutely need VxVM 2.1.1 for Sol2.5.
There was a bug in VxVM2.1

/Nikos
----------
From: dgthoma@sandia.gov (Darrell G. Thomas)

i tried to upgrade to solaris 2.5 this past weekend, but did not succeed
because of a SSA. i missed installing one patch, and even with sun's help was
not able to recover from it.

i'm planning to upgrade my ssa software to v2.1.1 on solaris 2.3 before going
to v2.5, instead of trying to do everything at once. so, what version of ssa
software are u currently running?

i'm definitely interested in the responses u get about ssa and solaris 2.5

darrell
----------
From: iv08480@issc02.mdc.com (Colin Melville)

Trevor,

We have had nothing but problems using the Volume Manager under both 2.4 & 2.5.
Our servers are very highly used/stressed, and the problems became so bad that
we backed off VM and now use our storage arrays as simple Unix filesystems.

Remember, if you can't pull a drive while the machine is up & running, it AIN'T RAID!

Colin
----------
From: gmp@adc.com (Gregory M Polanski)

Running Veritas on Solaris 2.5 on Ultra's with no apparent problem.
Let me know what you find out.

greg
----------
From: "Brian Graham" <briang@msmail.datalytics.com>

We had problems with Solaris 2.5 and SSA's running Veritas. The problems were
of corrupted filesystems that caused fsck to core dump! This problem was
terrible because it caused us to newfs the filesystem and restore all data from
tape.

We have applied all the patches that sun suggests, including all SSA firmware
upgrades and this has since corrected all of our problems (knock on wood). But
to say all of our problems are corrected is kind of a untrue statement. We
were never able to recreate the problem so I can't be 100% sure that the
problem is really gone.

There are also some reported problems with SSA's and ODS (Online Disksuite).
 I am not totally familiar with all these patches but I am sure sun has
taken care of the problem. No matter how angry I get with Sun at 4 in the
morning when a problem has brought me into work I can say that they are a
solid company that fixes all the problems quickly....

If you would like me to send the specific info like current vxva version,
SSA firmware revision and patches that need applied let me know. You may be
better off, however, to go to sunsite yourself and search and read, you may
learn more.

Thanks,
Brian Graham
----------
From: "Roger B.A. Klorese" <rogerk@veritas.com>

We have one user who is experiencing hangs with Solaris 2.5 and VxFS 2.2.
(and many who are not.) We are attempting to get a deadman-code core dump
to analyze. In addition, there are a couple of problems in the remount code.

In addition, there were some performance problems involving VxFS 2.2 under
Oracle; these were caused by a bug in the read-ahead management code.

All of these are fixed in 2.2.1, which is shipping now, and which is being
mass-shipped to maintenance customers. (2.2.1 is also required for Solaris
2.5.1.) We have not heard about any more hangs at the first site since 2.2.1
was installed, but we're not closing the call yet.

-- Trevor, please re-post this.
----------
From: jgotobed@LPL.Arizona.EDU (Joe Gotobed)

I understand there is a up[date to the V2.1 , possibly Veritas 2.1.1

->Wed Jun 19 09:08 problems with Solaris 2.5/>Veritas File Syste

Joe
----------
From: Pug <pug@arlut.utexas.edu>

In article <4qjq8i$acv@ns1.arlut.utexas.edu>, Pug <pug@arlut.utexas.edu> wrote:
>>>It *appears* that this is a known bug in VxFS 2.2 and is fixed in
>>>VxFS 2.2.1. Why did it take them this long to suggest installing the
>>>latest version instead of using the version they shipped me?
>>Well, it wasn't a known *symptom* of a known bug.
>A kernel deadlock didn't lead to a hung system? *shrug*

FYI, it appears that there is still a problem with the new version. I am
in the process of uploading the crash dump to Veritas for analysis and
fixing.

I'm not doing anything special. I have 16 processes doing write, copy,
read of 80 Meg files. Admittedly this is on a Sparc 10 with 32 megs of
memory, so it's not the fastest machine.

----------
From: "Pug" <pug@arlut.utexas.edu>

> Hi Richard, thought I'd drop you a note and ask how the testing was continuing?
> Things looking better? Still unresolved? Still crashing?

I've been working on it. Things have been resolved. There was a problem
in 2.2 that is fixed in 2.2.1. This was my problem and all has been
well. I have not finished my performance tests, so I don't know how it
stacks up against UFS and SDS's j_ufs yet. Those will be done in about 2
weeks.

Ciao,

-- 
Richard Bainter          Mundanely     |    OS Specialist         - OMG/CSD
Pug                      Generally     |    Applied Research Labs - U.Texas
   pug@arlut.utexas.edu     |     pug@eden.com     |     {any user}@pug.net
Note: The views may not reflect my employers, or even my own for that matter.



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