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At Vision in the "futures" session, they mentioned the distributed Media
DBs changing to a central db in a later release. Hoping we'll see it in
5.0, but I'm not holding my breath.
Not only does this remove some of the "awkwardness", but they also
mentioned a media server being able to use any assigned media, not just
ones assigned to him, because they're no longer assinged to a specific
media server. This makes media allocation (i.e. assignment) within the
library much more efficient in an environment with a large number of SAN
Media Servers... no more "out of available media" errors when the library
is full of half used tapes that are assigned to some other media server
(and can't be used by this particular one).
- Scott
"Shafto, Eric" <Eric.Shafto AT drkw DOT com>
Sent by: veritas-bu-admin AT mailman.eng.auburn DOT edu
08/29/2003 06:26 AM
To: veritas-bu AT mailman.eng.auburn DOT edu
cc:
Subject: RE: [Veritas-bu] Change Master Server Hostname
Can someone tell me the reason for having the media information
distributed
across the media servers? I have tried and failed to find a good
rationale.
It certainly makes a number of processes more awkward, like duplications,
server changes, etc.
-----Original Message-----
From: Sam Grover [mailto:siraim AT siraim DOT com]
Sent: Thursday, August 28, 2003 12:17 AM
To: Donaldson, Mark
Cc: 'Kim Pearson'; veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] Change Master Server Hostname
I did this over the weekend.. twice.. the first time, it went smoothly,
but then we realized the media databases didn't move properly.. so we
did it again...
step one.. backup everything.. to disk.. to tape. on paper..
whereever.. just make sure you have your catalog and all that entails.
step two.. (the part I neglected in trial one) Move your media back to
your master server, as if you're removing a media server. This is
important.. your media databases think your master server is named x,
and you're changing to y. Changing these entries after the fact is what
Veritas will charge you for.
step three.. bpbackupdb.. the master server is the only server that
should have relevant data at this point (your media has been moved
home) and so it's the only one you care about.
step four... bprecover -r -d/tpath <where.your.files.are> -dhost
<new_master_server>
step five.. restart the daemons (oh yeah.. step 3.5 bring down daemons
on the new master server, assuming they're running)
step six.. run your test restores and test backups.. and all should be
well.
The only problem we would have had if we ignored step one.. our media
would be partially assigned. The master server could restore from
tapes, but there might have been some strangeness in the media
databases. So remember.. without step one, your restores will work..
your images will expire.. and your tapes would probably return to being
unassigned.. but there might be some strange reporting done by some
scripts that check media DBs, like available_media.
Hope this helps.. and of course.. hopefully you have a test
environment, right? =)
Good luck,
Sam
On Wednesday, Aug 27, 2003, at 18:05 America/Chicago, Donaldson, Mark
wrote:
> Officially, you can't change the name of the master server. It's too
> tighly
> tied to info in the images DB. Unofficially, some have said they've
> done it
> but when others have tried the same methods, damaged ensued.
>
> The only way approved by Veritas to move images from one master server
> to
> another (thereby changing the master server name) is to import the
> tapes
> again.
>
> I think Veritas consulting will also change the name for $$.
>
> Sorry. I'm in the same boat.
>
> -M
>
> -----Original Message-----
> From: Kim Pearson [mailto:kim.pearson AT sun DOT com]
> Sent: Wednesday, August 27, 2003 4:47 PM
> To: veritas-bu AT mailman.eng.auburn DOT edu
> Subject: [Veritas-bu] Change Master Server Hostname
>
>
> Question:
>
> How do you restore db/image files to a master server with a different
> hostname? What is the process Veritas PS uses to change the image
> header?
>
> THANKS!
>
> Kim
> _______________________________________________
> Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
> _______________________________________________
> Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>
_______________________________________________
Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
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If you have received this e-mail in error or wish to read our e-mail
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<br><font size=2 face="Arial">At Vision in the "futures" session,
they mentioned the distributed Media DBs changing to a central db in a later
release. Hoping we'll see it in 5.0, but I'm not holding my breath.</font>
<br>
<br><font size=2 face="Arial">Not only does this remove some of the
"awkwardness", but they also mentioned a media server being able to
use any assigned media, not just ones assigned to him, because they're no
longer assinged to a specific media server. This makes media allocation
(i.e. assignment) within the library much more efficient in an environment with
a large number of SAN Media Servers... no more "out of available
media" errors when the library is full of half used tapes that are
assigned to some other media server (and can't be used by this particular
one).</font>
<br>
<br>
<br><font size=2 face="Arial">- Scott</font>
<br>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td>
<td><font size=1 face="sans-serif"><b>"Shafto, Eric" <Eric.Shafto
AT drkw DOT com></b></font>
<br><font size=1 face="sans-serif">Sent by: veritas-bu-admin AT
mailman.eng.auburn DOT edu</font>
<p><font size=1 face="sans-serif">08/29/2003 06:26 AM</font>
<br>
<td><font size=1 face="Arial"> </font>
<br><font size=1 face="sans-serif"> To:
veritas-bu AT mailman.eng.auburn DOT edu</font>
<br><font size=1 face="sans-serif"> cc:
</font>
<br><font size=1 face="sans-serif"> Subject:
RE: [Veritas-bu] Change Master Server
Hostname</font></table>
<br>
<br>
<br><font size=2 face="Courier New">Can someone tell me the reason for having
the media information distributed<br>
across the media servers? I have tried and failed to find a good rationale.<br>
It certainly makes a number of processes more awkward, like duplications,<br>
server changes, etc.<br>
<br>
-----Original Message-----<br>
From: Sam Grover [mailto:siraim AT siraim DOT com]<br>
Sent: Thursday, August 28, 2003 12:17 AM<br>
To: Donaldson, Mark<br>
Cc: 'Kim Pearson'; veritas-bu AT mailman.eng.auburn DOT edu<br>
Subject: Re: [Veritas-bu] Change Master Server Hostname<br>
<br>
<br>
I did this over the weekend.. twice.. the first time, it went smoothly, <br>
but then we realized the media databases didn't move properly.. so we <br>
did it again...<br>
<br>
step one.. backup everything.. to disk.. to tape. on paper.. <br>
whereever.. just make sure you have your catalog and all that entails.<br>
<br>
step two.. (the part I neglected in trial one) Move your media back to <br>
your master server, as if you're removing a media server. This is <br>
important.. your media databases think your master server is named x, <br>
and you're changing to y. Changing these entries after the fact is what <br>
Veritas will charge you for.<br>
<br>
step three.. bpbackupdb.. the master server is the only server that <br>
should have relevant data at this point (your media has been moved <br>
home) and so it's the only one you care about.<br>
<br>
step four... bprecover -r -d/tpath <where.your.files.are> -dhost <br>
<new_master_server><br>
<br>
step five.. restart the daemons (oh yeah.. step 3.5 bring down daemons <br>
on the new master server, assuming they're running)<br>
<br>
step six.. run your test restores and test backups.. and all should be <br>
well.<br>
<br>
The only problem we would have had if we ignored step one.. our media <br>
would be partially assigned. The master server could restore from <br>
tapes, but there might have been some strangeness in the media <br>
databases. So remember.. without step one, your restores will work.. <br>
your images will expire.. and your tapes would probably return to being <br>
unassigned.. but there might be some strange reporting done by some <br>
scripts that check media DBs, like available_media.<br>
<br>
Hope this helps.. and of course.. hopefully you have a test <br>
environment, right? =)<br>
<br>
Good luck,<br>
<br>
Sam<br>
<br>
<br>
<br>
On Wednesday, Aug 27, 2003, at 18:05 America/Chicago, Donaldson, Mark <br>
wrote:<br>
<br>
> Officially, you can't change the name of the master server. It's too
<br>
> tighly<br>
> tied to info in the images DB. Unofficially, some have said they've
<br>
> done it<br>
> but when others have tried the same methods, damaged ensued.<br>
><br>
> The only way approved by Veritas to move images from one master server <br>
> to<br>
> another (thereby changing the master server name) is to import the <br>
> tapes<br>
> again.<br>
><br>
> I think Veritas consulting will also change the name for $$.<br>
><br>
> Sorry. I'm in the same boat.<br>
><br>
> -M<br>
><br>
> -----Original Message-----<br>
> From: Kim Pearson [mailto:kim.pearson AT sun DOT com]<br>
> Sent: Wednesday, August 27, 2003 4:47 PM<br>
> To: veritas-bu AT mailman.eng.auburn DOT edu<br>
> Subject: [Veritas-bu] Change Master Server Hostname<br>
><br>
><br>
> Question:<br>
><br>
> How do you restore db/image files to a master server with a different<br>
> hostname? What is the process Veritas PS uses to change the image<br>
> header?<br>
><br>
> THANKS!<br>
></font>
<br><font size=2 face="Courier New">> Kim<br>
> _______________________________________________<br>
> Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT
edu<br>
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu<br>
> _______________________________________________<br>
> Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT
edu<br>
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu<br>
><br>
<br>
_______________________________________________<br>
Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu<br>
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu<br>
<br>
<br>
If you have received this e-mail in error or wish to read our e-mail disclaimer
statement and monitoring policy, please refer to
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<br>
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</font>
<br>
<br>
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