Hi!
Netware is always a problem... :-)
However we have a very large netware env here and have often problems with
netware and backups.
The thing you said about hanging when unloading is standard procedure.
Almost always occurs. We run netware 6 and netbackup 5.1 and things have got
a litle bit better. But not much.
I dont have any exact solution to your problem, but i would like to give you
some pointer and some info to think about.
1. We se here that SYS volume takes long time to backup. Therefor we have
created a policy that only backup SYS one a week and have excluded SYS from
the other targets.
2. We dont create targets larger than 250 GB, because it takes long time to
backup. 250 Gb takes us about 9 hours to backup. We see that the netware
servers cant push more data. We run 1Gb ethernet from the netware servers to
the backup master and that communication is more then enough.
3. An upgrade of both the netware platform and netbackup would be nice for
you. Netware have improved the TSA function very much since tsa500.
We run TSAFS here and it`s much faster. And you with tsafs you can tune your
backup env..
4. There is a test untility available at netware download called "tsatest".
This is a great utility to test your netware env and se what you can expect
from your backups.
5. We dont run OTM here because of all the problems. The OTM cache file
probably stays because of that you have to manually kill the job.
What happens if you dont run OTM? Still same error?
6. If you set the cache max size to 0 (dynamic) how does it work then? How
large does it get?
It`s a terrible situation to run Netware and also have to back it up.. All
software companies say that "we dont priority netware" because no one uses
it, but we do and we have had so much problem erlier. After the upgrade to
netware 6.x and the latest tsa modules things have been better...
Hope this info helps you in some way!
Best regards,
MVH / Hampus Lind
Rikspolisstyrelsen
National Police Board
Tele arb: +46 (0)8 - 401 99 43
Tele mob: +46 (0)70 - 217 92 66
E-mail: hampus.lind AT rps.police DOT se
----- Original Message -----
From: "Marek Gorka" <marek.gorka AT sun DOT com>
To: <veritas-bu AT mailman.eng.auburn DOT edu>
Sent: Wednesday, October 27, 2004 10:03 AM
Subject: [Veritas-bu] NBU + NetWare problem
> Hello,
>
> I would like to discuss a problem with backing up a NetWare client.
>
> We have several servers giving us very similar problems, but I'll focus on
> one of them to ease the case.
>
> <> FACTS - Backup Server
>
> Backup server running Veritas NetBackup 4.5 MP3 (Master+Media) + patches:
>
> - 112407-05
> - 115803-01
> - 113487-05
> - 112408-01
>
> System platform is Sun Solaris 8.
>
> Library: 2*L25 (stacked) + 2*LTO tape devices.
>
> Backup server backs up serveral clients: two NetWare, three Windows
> NT+2000, two Solaris boxes.
>
> Server platform and clients other than NetWare run perfectly okay.
>
> <> FACTS - Novell NetWare
>
> Server platform is 5.1 with Service Pack 5. Server runs only directory
> synchronization application + BorderManager.
>
> According to the docs and to the current environment, we use the following
> NetWare parameters:
>
> - Maximum directory cache buffers 10000
> - Minimum directory cache buffers 4000
> - Maximum packets receive buffers 30000
> - Minimum packets receive buffers 2000
> - Maximum concurrent disk cache writes 2000
> - Maximum concurrent directory cache writes 75
> - Maximum physical receive packet size 4224
>
> (Accross the environment some parameters may vary a little between NetWare
> servers, but not too much).
>
> <> FACTS - Backup Type
>
> We do a TARGET backup for the following targets:
>
> - NDS (directory)
> - SYS (filesystem)
> - DANE (filesystem)
>
> We use OTM with the OTM file on DANE:\. Here is the config excerpt on the
> client side:
>
> Cache_file = dane:otm
> Cache_Control = 0
> Cache_Size_Init = 700
> Cache_Size_Max = 3172
> [...]
> Use = yes
>
> There is always more space on DANE than the Cache_Size_Max parameter.
>
> The NBU modules we use are:
>
> tsands.nlm
> tsa500.nlm
> tsaproxy.nlm
> otmload
> bpcd
> bpsrv
>
> <> FACTS - The problem indeed
>
> When we power on the netware box, the backup runs okay for all targets for
> several days. After 5-7 days something happens.
>
> We encounter the following problems (probably on the same basis):
>
> - neverending backup sessions: Backup session starts for a target. Server
> mounts and positions the tape. The Activity Monitor shows that everything
> goes fine, gives us "Begin Writing" and nothing happens. No data runs from
> the client to the server (checked with the 'snoop' utility). The NBU
> client on the NetWare side is running, 13782 port is opened. Nothing
> happens. There are no network problems. The session might last forever if
> we don't stop it manually (150 error code). This happens mostly for the
> filesystem targets: DANE + SYS, very rarely for NDS (directory). Usually
> with this problem goes another:
>
> - OTM file is not deleted after backup session: it still exists on the
> DANE filesystem. We are unable to delete the file manually. We have to
> stop the NBU client. And this gives us another problem:
>
> - NetWare server hangs: if we try to unload NBU modules, the console
> hangs. After a while the whole server hangs. The only solution is to
> reboot it using the 'reset' button on the server front panel.
>
> Now, as the NetWare server has been rebooted, it runs okay for a couple of
> days (usually 5 or 6) and then gives us the same problem.
>
> Sometimes the 'neverending' backup session manages to start the data flow
> from NetWare client to NBU Server. It runs fine for a minute or two when
> suddenly the data just stops going out from the client. The session is
> still open. We have to cancel it manually (150 error code).
>
> ----
>
> Does anyone have experience with backing up the netware client? I'd be
> grateful for any help as I ran out of ideas.
>
> --
> Marek Gorka
> Client Solutions
> Sun Microsystems Poland
> _______________________________________________
> Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
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