Re: synchronization/backup mx

2007-05-15 Thread Simon Matter
> Torsten Schlabach wrote: >> > The config you would need is to use drbd to mirror the data >> > directories >> >> Is this officially supported / endorsed? > Not that I know of but someone else may have a better idea than me >> I learned that Cyrus IMAPd (for whatever reason) is quite picky on >> f

Re: synchronization/backup mx

2007-05-15 Thread Jack Stone
>> Search for rolling replication. Though I failed to get it working >> >> reliably ... The only problem with rolling replication is that if you fail over to the replica and mail gets delivered to it. When you bring the master back up unless you are carefull (i.e. switch which is master and which r

Re: synchronization/backup mx

2007-05-15 Thread Jack Stone
Torsten Schlabach wrote: > > The config you would need is to use drbd to mirror the data > > directories > > Is this officially supported / endorsed? Not that I know of but someone else may have a better idea than me > I learned that Cyrus IMAPd (for whatever reason) is quite picky on > filesystems

Re: synchronization/backup mx

2007-05-15 Thread Torsten Schlabach
> The config you would need is to use drbd to mirror the data > directories Is this officially supported / endorsed? I learned that Cyrus IMAPd (for whatever reason) is quite picky on filesystems. From the FAQ: --- SNIP --- # Using NFS We don't recommend it. If you want to do it, it may poss

Re: synchronization/backup mx

2007-05-15 Thread Torsten Schlabach
Search for rolling replication. Though I failed to get it working reliably ... Do you mean this stuff here: http://nfs-uxsup.csx.cam.ac.uk/~dpc22/cyrus/replication.html Regards, Torsten Ulrich Spoerlein schrieb: Torsten Schlabach wrote: you are searching for heartbeat and drbd But this w

Re: synchronization/backup mx

2007-05-15 Thread Jack Stone
>you are searching for heartbeat and drbd >> >> But this will "just" provide the HA filesystem, won't it? >> >> Isn't there a technology available in Cyrus IMAPd which will replicate >> changes to a mailbox to two different servers? >> Firstly, hello to the list. drbd is a file system replicatio

Re: synchronization/backup mx

2007-05-15 Thread Ulrich Spoerlein
Torsten Schlabach wrote: > > you are searching for heartbeat and drbd > > But this will "just" provide the HA filesystem, won't it? > > Isn't there a technology available in Cyrus IMAPd which will replicate > changes to a mailbox > to two different servers? Search for rolling replication. Thou

Re: synchronization/backup mx

2007-05-15 Thread Torsten Schlabach
> you are searching for heartbeat and drbd But this will "just" provide the HA filesystem, won't it? Isn't there a technology available in Cyrus IMAPd which will replicate changes to a mailbox to two different servers? Michael Grundmann schrieb: Torsten Schlabach schrieb: Does anyone have a

Re: synchronization/backup mx

2007-05-15 Thread Michael Grundmann
Torsten Schlabach schrieb: Does anyone have a redundant IMAP config up and running where failure of a mailbox server would not mean any service disruption? It might be worth documenting such a setup in the Cyrus Wiki. you are searching for heartbeat and drbd -- Gruß Michael ...der auch imm

Re: synchronization/backup mx

2007-05-15 Thread Torsten Schlabach
Hi Phillipe! Your question is very valid in the first place; a lot of people are looking for that scenario. (Including one of the sites which I work on right now.) I think you will have to become clear of some things: 1. An MX is a Mail eXchanger, i.e. Exim, Postfix or the like. The MX does not