Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Mon, Jun 18, 2007 at 06:39:45PM +0200, Jan Kasprzak wrote: > Hello, > > What is the recommended procedure for upgrading drbd without the interruption > of the H-A cluster? > > I have a heartbeat-based H-A cluster with some shared state on a drbd volume. > The system was Fedora 5 with 2.6.18 kernel and drbd-8.0pre4. I have upgraded > the secondary node to Fedora 7 and compiled drbd-8.0.3 module. However, > after "drbdadm up all" on the secondary node it complains that the protocol > version on one side is 82, while on the other side it is 86. > > Is it possible to upgrade drbd without stopping both nodes simultaneously > (i.e. without the outage of the whole H-A cluster)? yes, provided the "wire protocol version" is compatible. we promise that we keep it compatible within a stable release (e.g. 0.7.x or 8.0.y). we may (and did) break it several times during developement cycles. you are trying to upgrade from a 12 month old pre-release. sorry, there have been incompatible changes in the wire protocol. so no, you have a (short: stopping/umount/unload/replace/load/mount/start) downtime. downtime should not hurt you, anyways, since, running a pre-release, that server cannot possibly be a production server, right? :-> -- : Lars Ellenberg Tel +43-1-8178292-0 : : LINBIT Information Technologies GmbH Fax +43-1-8178292-82 : : Vivenotgasse 48, A-1120 Vienna/Europe http://www.linbit.com : __ please use the "List-Reply" function of your email client.