Distributed Replicated Block Device (DRBD) development
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From: Lars Marowsky-Bree <lmb@suse.de>
To: Philipp Reisner <philipp.reisner@linbit.com>, drbd-dev@lists.linbit.com
Subject: Re: [Drbd-dev] Another drbd race
Date: Tue, 7 Sep 2004 14:06:31 +0200	[thread overview]
Message-ID: <20040907120631.GI10035@marowsky-bree.de> (raw)
In-Reply-To: <200409071332.02477.philipp.reisner@linbit.com>

On 2004-09-07T13:32:02,
   Philipp Reisner <philipp.reisner@linbit.com> said:

> > similar after bootup:
> >   we refuse to be promoted to Primary from Secondary/Unknown,
> >   unless we got an explicit "peer dead" confirmation by someone.
> >
> > does that make any sense?
> >
> I like it a lot!
> 
> Thus we will not call it "drbdadm resume-io r0" but 
> "drbdadm peer-dead r0"

The drbd proof of concept Resource Agent I wrote actually calls this
command "mark-peer-dead", so we are quite in alignment ;-)

Note that in particular this could be set before even drbd itself
notices; which is more easily understood than getting a "resume_io"
command before drbd had even suspended IO.

> Also the question at the startup-user-dialog: 
> 
> Is the peer dead ? 
> 
> Is easier to get right....

Yep. It's also much easier to code for.


Sincerely,
    Lars Marowsky-Brée <lmb@suse.de>

-- 
High Availability & Clustering	   \\\  /// 
SUSE Labs, Research and Development \honk/ 
SUSE LINUX AG - A Novell company     \\// 


  parent reply	other threads:[~2004-09-07 12:06 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20040819110202.GO9601@marowsky-bree.de>
     [not found] ` <20040819113205.GP9601@marowsky-bree.de>
     [not found]   ` <R+ahoCHARbsLOMKIahWH0/Q=lge@web.de>
2004-08-20 12:52     ` [Drbd-dev] Re: drbd Frage zu secondary vs primary; drbddisk status problem Philipp Reisner
2004-08-20 13:32       ` Lars Ellenberg
2004-08-23 14:28         ` [Drbd-dev] gen_counts and primary --human Lars Ellenberg
2004-08-23 21:57           ` Lars Marowsky-Bree
2004-08-25  9:42           ` Philipp Reisner
2004-08-23 21:56         ` [Drbd-dev] Re: drbd Frage zu secondary vs primary; drbddisk status problem Lars Marowsky-Bree
2004-08-25  9:42         ` Philipp Reisner
2004-08-25 10:28           ` Lars Marowsky-Bree
2004-08-25 11:30             ` Philipp Reisner
2004-08-25 13:38           ` Lars Ellenberg
2004-09-04  9:48         ` [Drbd-dev] Another drbd race Lars Marowsky-Bree
2004-09-04 10:00           ` Lars Ellenberg
2004-09-04 10:18             ` Lars Marowsky-Bree
2004-09-04 10:43               ` Lars Ellenberg
2004-09-04 10:51                 ` Lars Marowsky-Bree
2004-09-07  9:39             ` Philipp Reisner
2004-09-07 10:13               ` Lars Ellenberg
2004-09-07 11:32                 ` Philipp Reisner
2004-09-07 12:05                   ` Lars Ellenberg
2004-09-07 12:12                     ` Lars Marowsky-Bree
2004-09-07 12:06                   ` Lars Marowsky-Bree [this message]
2004-09-07 12:19                 ` Philipp Reisner
2004-09-07 12:28                   ` Lars Marowsky-Bree
2004-09-07 12:47                     ` Philipp Reisner
2004-09-08 11:20                       ` Lars Marowsky-Bree
2004-09-08 11:31                         ` Lars Ellenberg
2004-09-08 15:11                           ` Lars Marowsky-Bree
2004-09-08 15:22                             ` Lars Ellenberg
2004-09-08 11:33                         ` Philipp Reisner
2004-09-07 15:55                   ` Lars Ellenberg
2004-08-20 14:10       ` [Drbd-dev] Re: drbd Frage zu secondary vs primary; drbddisk status problem Helmut Wollmersdorfer
2004-08-23 22:01       ` Lars Marowsky-Bree

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