Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi, On Monday 29 November 2004 12:24, Gareth Ansell wrote: > Andreas Huck wrote: > > > your main server (drbd master) should become slave before > > shutting down. Your cluster manager (heartbeat?) could handle > > this. It will come up as secondary again and the primary should sync the > > changed blocks. But beware of any (misconfigured) autofailback feature > > of your cluster manager. > > > > Regards, > > Andreas > > Thanks for the reply, we are only running drbd, not heartbeat, at the > moment. Should I set the main server to secondary before I power it > down manually? Hm, you might check your startup scripts then. Some sort of clustermanager - at least the administrator or a script - is necessary. Who tells drbd which server is primary? If you use protocol C (and are cool enough ;-), simply unplug the AC power cable on your primary. DRBD can deal with this, it's a RAID-1. The application using your DRBD device should be able to deal with this too. > > Does drbd restart in the mode it was in previously, or does it always > start up in a secondary state? Your clustermanager desides. On startup (modprobe drbd) sync is always from newer to older - if drbd hasn't all information to decide, the definition in "startup" of drbd.conf is cucial. Regards, Andreas > > thanks > > Gareth > >