Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Ok Thnaks for the answers!! So... there is not a way to have to machines synchronized over WAN and the two machines with the filesystem mounted in RW ? Thanks Lars Ellenberg wrote: > On Tue, Jul 14, 2009 at 05:58:14PM +0200, Lars Marowsky-Bree wrote: > >> On 2009-07-06T20:16:26, Mikel Jimenez <mikel at irontec.com> wrote: >> >> >>> The users in LAN of A would access to server A and the users in LAN of B >>> would access to server B. >>> When I user access to the webmail or A looks the same that looks from B. >>> >>> We have a simetrical VPN between two sites. >>> >>> How does DRBD result in this type of environment? >>> >>> I think that the best is "Protocol A" and Im looking for use DRBD-Proxy >>> for compression, or Openvpn + LZO. >>> >>> Opinions? >>> >> The latency overhead - both DRBD and at the locking layer - will kill >> the file system performance. >> > > appart from that, with dual-primary you _MUST_ replicate syncronously, > thus: DRBD protocol C. > for (hopefully) obvious reasons. > > I still have this idea of implementing a replication aware > cluster file system locking layer mode, where lock _requests_ would be > inserted into (or at least in order with) the replicated data stream, so > it could be replicated asynchronously in theory. > > IFF it can be made to work, that is probably several manyears > developement, though -- roughly estimated ;) > >