Thanks, this turned out to be quite helpful.
Seems like the problem was twofold:
1. I was trying to put too much in the media server/server info
2. I was running from an admin console which was not listed in the
server tab which, when added, did the trick.
Any tips on performance tuning for linux media servers?
-----Original Message-----
From: David Chapa [mailto:david.chapa AT adic DOT com]
Sent: Wednesday, February 04, 2004 3:57 PM
To: Justin King; veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Linux SAN Media Server Question
The Master controls the scheduling for the media servers, but the media
servers do maintain their own db's most importantly the mediaDB.
Check the bp.conf file on the Linux Media server to make sure that it
has the master server as the first entry
SERVER = $MASTER
If there are other SERVER = entries in there make sure the LINUX media
server is listed.
Also check the Master Server's bp.conf file (via the windows GUI) for
the same.
David A. Chapa * Technical Advisor, Technical Marketing * ADIC *
720.249.5836 * david.chapa AT adic DOT com
Pathlight VX - Integrated Disk-to-Tape Backup - http://www.adic.com
-----Original Message-----
From: Justin King [mailto:jking AT hnl.bcm.tmc DOT edu]
Sent: Wednesday, February 04, 2004 2:47 PM
To: David Chapa; veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Linux SAN Media Server Question
All the commands seem to check out okay. The host and ip addresses
always return correctly, though the "aliases:" line is blank. I tried
it both ways with <hostname> and <hostname.fqdn> and both times it
resolves correctly.
As far as the Qlogic drivers, the most recent EMC/Dell approved
v6.05.00-1 available.
Another thing I noticed on the Linux boxes is the following when I start
the netbackup process
16307 pts/1 S 0:00 /usr/openv/volmgr/bin/ltid
16312 pts/1 Z 0:00 \_ [vmd <defunct>]
16362 pts/1 S 0:00 \_ tldd
16399 pts/1 S 0:00 \_ avrd
16314 pts/1 S 0:00 vmd
16315 pts/1 S 0:00 \_
/usr/openv/netbackup/bin/admincmd/bpversion
16498 ? S 0:00 xinetd -stayalive -reuse -pidfile \
/var/run/xinetd.pid
The "<defunct>" has me a little worried, but it appears that it's
running below? In addition, when I stop the service, it leaves a number
of processes (usually oprd or bpversion) behind so that I have to kill
them manually. I wasn't sure if that was normal.
I suppose I don't understand how the media server works. I was under
the impression that the master server holds the "master-media" database
and all the media servers pull from whatever is available according to
the master-server's global DB; however, that doesn't seem to be the
case.
-----Original Message-----
From: David Chapa [mailto:david.chapa AT adic DOT com]
Sent: Wednesday, February 04, 2004 3:33 PM
To: Justin King; veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Linux SAN Media Server Question
What version of the Qlogic driver are you using?
>From the master I would run:
%VERTIAS%/netbackup/bin/admincmd/bpclntcmd -hn $LINUXMEDIA
%VERTIAS%/netbackup/bin/admincmd/bpclntcmd -ip $LINUXMEDIA_IPADDR
>From the Linux Media Server
/usr/openv/netbackup/bin/admincmd/bpclntcmd -hn $MASTER
/usr/openv/netbackup/bin/admincmd/bpclntcmd -ip $MASTER_IP
This does a gethostbyname and a gethostbyaddr, which is what NBU does.
Ensure that you are getting the correct results back for all of these
statements. It may be that your media server is not resolving the
Master Server properly.
David A. Chapa * Technical Advisor, Technical Marketing * ADIC *
720.249.5836 * david.chapa AT adic DOT com
Pathlight VX - Integrated Disk-to-Tape Backup - http://www.adic.com
-----Original Message-----
From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of Justin
King
Sent: Wednesday, February 04, 2004 1:49 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Linux SAN Media Server Question
I'm hoping to find some answers to a couple problems I'm having. Let me
give you a brief description of my configuration:
Dell PV136T with 3 HP Ultrium LTO drives
Connected over 2Gb Fibre-Channel network
QLogic HBA's (fiber)
Red Hat Linux v7.3 (stock kernel)
Windows 2000 SP4
NetBackup 4.5 MP6 (for all Win2K systems)
NetBackup 4.5 FP6 (for all Linux systems)
All systems are Dell PowerEdge 2650 (2x2.2GHz, 2GB RAM or better)
1 Master server is W2K
2 SAN Media servers are W2K
1 SAN Media server is Linux
~20 additional clients (Ethernet backups) either W2K or Linux
Here are the problems:
1. When I run a "Media Lists" report, I get messages stating the master
server cannot obtain a report from the linux SAN media server because
access to the client was not allowed. The linux media server is
correctly backing up over the SAN. Any ideas?
2. Backups over the SAN are slow (the utilization on this SAN is very
low, roughly 1-2%). I'd originally had the linux media server setup as
a client. Over 1Gb Ethernet fiber, I was backing up at around 12MB/s,
when I moved it to a media server, it dropped to around 6.8MB/s over the
SAN. The absolute fastest backup I've ever gotten over the SAN runs
around 15MB/s. This (to me) doesn't seem anywhere near peak
performance. Anyone have any experience with a similar setup (or
pointer for performance tuning)? Ideally, I'd love some kind of
performance benchmarks I might be able to compare against.
It seems I'm a little confused as to what the bp.conf file needs to have
in it for a media server under linux. Any and all help would be greatly
appreciated.
Thanks for reading this far.
Justin King
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