Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
/ 2005-09-07 16:21:43 +0200 \ Michael Paesold: > Lars Ellenberg wrote: > > >>Another option would be the current trunk version of drbd > >>(Primary/Primary), but I guess you could not recommend using it. Is > >>the on-disk storage compatible with 0.7? Can 0.7 partitions be > >>upgraded to trunk? > > > >even then, it would be nonsense. > > I don't think so... > > >the client (guest) system will assume exclusive access, so no other > >system may have write access, even less so on the node that is > >drbd secondary. > > The guest on the new host (after migration) will not start to run before the one on the old host will be > destroyed. The problem is that Xen wants to setup the virtual device _before_ the old guest died. It will not be > used at all until that point. well. then that is a problem of xen, and has to be fixed in xen. no way we can allow you to have two primaries at any time if the "application" expects exclusive access. it would break terribly, and drbd would be blamed. -- : Lars Ellenberg Tel +43-1-8178292-0 : : LINBIT Information Technologies GmbH Fax +43-1-8178292-82 : : Schoenbrunner Str. 244, A-1120 Vienna/Europe http://www.linbit.com : __ please use the "List-Reply" function of your email client.