----- Forwarded message from "Pawul, Rudy" <rpawul@example.com> -----
Date: Tue, 26 Sep 2000 13:05:53 -0400
From: "Pawul, Rudy" <rpawul@example.com>
To: Fabio Olive Leite <olive@example.com>
Subject: RE: State DRBD and Heartbeat?
X-Mailer: Internet Mail Service (5.0.1460.8)
Thanks a lot!
I try to update you on my results
r
> -----Original Message-----
> From: Fabio Olive Leite [SMTP:olive@example.com]
> Sent: Tuesday, September 26, 2000 10:53 AM
> To: Pawul, Rudy
> Cc: marcelo@example.com; lclaudio@conectiva.com.br;
> philipp@example.com
> Subject: Re: State DRBD and Heartbeat?
>
> Hi there,
>
> I did not think of answering right away, since I was only in the Cc:
> list, but now it's been over a month and I have not seen any answer,
> so here it goes anyway. :)
>
> Since the e-mail concerns drbd mostly, I'll include Philipp Reisner
> (drbd's author) in the Cc: list as well.
>
> On Mon, Aug 21, 2000 at 09:14:38AM -0400, Pawul, Rudy wrote:
> ) Hello all.
> )
> ) First, please excuse my writing in English, but I'm sadly not bi-lingual
> and
> ) thought the babel fish would make me sound like an idiot in
> Portugese....
>
> Never mind, reading/writing/speaking in english is part of our daily
> routine. We have people from other countries working here, and as we
> also work with people from all over the world, english seems to be the
> common communication protocol. :)
>
> ) Anyway, I'm about to try setting up a mail server cluster with Heartbeat
> and
> ) DRBD. I was hoping to get an idea of what I should expect - how stable
> it
> ) is, known problems, etc.
>
> Both have been on use for production servers for quite some time,
> without major problems. Bugs are usually found before they bite.
> You should be aware though, that it is pretty easy to decrease overall
> availability and consistency if you apply those tools in the wrong way.
>
> ) Alan had said that folks had "seen troubles" using drbd, but that
> connectiva
> ) was putting out solutions using it. I really couldn't get a feel of
> what to
> ) look for by reading the mailing list archives.
>
> We have been working tightly with Philipp Reisner, drbd's author, for
> quite some time now. drbd has had some troubles in the past, but those
> show-stoppers have been squashed, and nowadays you can expect a good
> level of stability from drbd for production servers.
>
> ) I was planning on using it on SuSE6.4, with ReiserFS, and the 0.4.8 rpm
> ) release of heartbeat. I guess I would grab the 0.5.6-pre1 drbd as
> well...
>
> We have tested drbd and reiserfs some time ago, and we did find issues
> that were solved. As of today you can use reiserfs on top of drbd,
> even though a crash during drbd's resync phase (rejoin of a crashed
> node) could leave reiserfs (or any other fs) broken. This is something
> we have to live with, since drbd was not built to tolerate multiple
> faults (and will never do, as long as it supports only two nodes).
>
> I hope this helps. Further communication will be speedier. :)
> Fabio
> --
> ( Fabio Olive Leite -- Conectiva HA Team -- olive@example.com )
> ( PPGC/UFRGS MSc candidate -- Advisor: Taisy Silva Weber )
> ( Linux - Distributed Systems - Fault Tolerance - Security - Pizza )
----- End forwarded message -----
--
( Fábio Olivé Leite -- Conectiva HA Team -- olive@example.com )
( PPGC/UFRGS MSc candidate -- Advisor: Taisy Silva Weber )
( Linux - Distributed Systems - Fault Tolerance - Security - Pizza )
Date: Tue, 26 Sep 2000 13:05:53 -0400
From: "Pawul, Rudy" <rpawul@example.com>
To: Fabio Olive Leite <olive@example.com>
Subject: RE: State DRBD and Heartbeat?
X-Mailer: Internet Mail Service (5.0.1460.8)
Thanks a lot!
I try to update you on my results
r
> -----Original Message-----
> From: Fabio Olive Leite [SMTP:olive@example.com]
> Sent: Tuesday, September 26, 2000 10:53 AM
> To: Pawul, Rudy
> Cc: marcelo@example.com; lclaudio@conectiva.com.br;
> philipp@example.com
> Subject: Re: State DRBD and Heartbeat?
>
> Hi there,
>
> I did not think of answering right away, since I was only in the Cc:
> list, but now it's been over a month and I have not seen any answer,
> so here it goes anyway. :)
>
> Since the e-mail concerns drbd mostly, I'll include Philipp Reisner
> (drbd's author) in the Cc: list as well.
>
> On Mon, Aug 21, 2000 at 09:14:38AM -0400, Pawul, Rudy wrote:
> ) Hello all.
> )
> ) First, please excuse my writing in English, but I'm sadly not bi-lingual
> and
> ) thought the babel fish would make me sound like an idiot in
> Portugese....
>
> Never mind, reading/writing/speaking in english is part of our daily
> routine. We have people from other countries working here, and as we
> also work with people from all over the world, english seems to be the
> common communication protocol. :)
>
> ) Anyway, I'm about to try setting up a mail server cluster with Heartbeat
> and
> ) DRBD. I was hoping to get an idea of what I should expect - how stable
> it
> ) is, known problems, etc.
>
> Both have been on use for production servers for quite some time,
> without major problems. Bugs are usually found before they bite.
> You should be aware though, that it is pretty easy to decrease overall
> availability and consistency if you apply those tools in the wrong way.
>
> ) Alan had said that folks had "seen troubles" using drbd, but that
> connectiva
> ) was putting out solutions using it. I really couldn't get a feel of
> what to
> ) look for by reading the mailing list archives.
>
> We have been working tightly with Philipp Reisner, drbd's author, for
> quite some time now. drbd has had some troubles in the past, but those
> show-stoppers have been squashed, and nowadays you can expect a good
> level of stability from drbd for production servers.
>
> ) I was planning on using it on SuSE6.4, with ReiserFS, and the 0.4.8 rpm
> ) release of heartbeat. I guess I would grab the 0.5.6-pre1 drbd as
> well...
>
> We have tested drbd and reiserfs some time ago, and we did find issues
> that were solved. As of today you can use reiserfs on top of drbd,
> even though a crash during drbd's resync phase (rejoin of a crashed
> node) could leave reiserfs (or any other fs) broken. This is something
> we have to live with, since drbd was not built to tolerate multiple
> faults (and will never do, as long as it supports only two nodes).
>
> I hope this helps. Further communication will be speedier. :)
> Fabio
> --
> ( Fabio Olive Leite -- Conectiva HA Team -- olive@example.com )
> ( PPGC/UFRGS MSc candidate -- Advisor: Taisy Silva Weber )
> ( Linux - Distributed Systems - Fault Tolerance - Security - Pizza )
----- End forwarded message -----
--
( Fábio Olivé Leite -- Conectiva HA Team -- olive@example.com )
( PPGC/UFRGS MSc candidate -- Advisor: Taisy Silva Weber )
( Linux - Distributed Systems - Fault Tolerance - Security - Pizza )