When is .8 due to be stable?<br><br>
<div><span class="gmail_quote">On 6/1/06, <b class="gmail_sendername">Lars Ellenberg</b> <<a href="mailto:Lars.Ellenberg@linbit.com">Lars.Ellenberg@linbit.com</a>> wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">/ 2006-06-01 16:14:49 +0100<br>\ paddy:<br>> is there any hard and fast rule about the on-disk structures ?
<br>> what is the migration path to 0.8 like ?<br><br>we drop the "0.", because the 0.7 (maybe already the 0.6.something)<br>should have been a "1.x" ...<br><br>migration drbd 0.7 to drbd 8 would be something like:
<br>* take down both nodes<br> (unless we incorporate some network protocol compatibility layer,<br> which is possible, but not very likely because it is much work and we<br> personally don't get much benefit from it)<br>
<br>* install the drbd8 module and user space tools<br>* adjust the config (syntax has changed, some other options etc)<br> you can obviously prepare this beforehand...<br>* use drbdmeta (a new user space tool) to convert the existing
<br> v07 meta data into a v8 one<br> (details how to do that follow on some wiki page)<br> but it already has a manpage.<br> you'd do something like<br> drbdmeta /dev/drbd0 v8 /dev/mapper/storage-drbd0_md 0 create-md
<br> and, according to the manpage:<br> create-md<br> Create-md initializes the meta data storage. This needs to be<br> done before a DRBD resource can be taken online for the first<br> time. In case there is already a meta data signature of an
<br> older format in place, drbdmeta will ask you if it should<br> convert the older format to the selected format.<br> I think the drbdadm would even do this for you (at least it probably<br> should... I'll verify that, and implement it if not already done).
<br> then this would be "drbdadm convert-md-to-v8 all",<br> or something like that.<br>* start drbd 8<br><br>not too complicated, right?<br><br>if you practice on a test system,<br>you can probably do this with a very
<br>short downtime on a productive system.<br><br>--<br>: Lars Ellenberg Tel +43-1-8178292-0 :<br>: LINBIT Information Technologies GmbH Fax +43-1-8178292-82 :<br>: Schoenbrunner Str. 244, A-1120 Vienna/Europe
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<br><br>Christopher<br>