Steve,
Are the two servers roughly equal in terms of hardware?
Scott Helms
>
> Please help, I've read through the manual and this case is suggested but
> not really
> laid out. I'm using mysql 3.23.37 and can't upgrade to 4.0 yet.
>
> Okay, I've got replication on 2 machines with a one-way failover setup:
> Master fails, slave takes over.
>
> Now the slave has been recording updates for a day, and I want the
> master to start again. But I don't want to lose the last day's updates.
>
> Since replication is only one-way, there really shouldn't be any updates
> happening on the slave, but in the failover case, I've got no choice.
>
> So how do I isolate those updates and reapply them to the master,
> and switch back?
>
> My best guess so far is really clumsy and I'm not sure it will work:
>
> with master still shut down and client running on the slave:
> run FLUSH TABLES WITH READ LOCK on the slave
> copy all the .myi and .myd files with recent changes to a tgz file and
> over to the master
> start the master
> UNLOCK TABLES on the slave
> switch my client over to use the master.
>
> I'm not certain this will preserve the replication and bin files.
>
> Can anyone offer help, this seems to be a pretty common case.
>
> -steve
>
>
> --
> Steve Rapaport
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