Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hello, I'm about to create a DRBD cluster with 2 disks per node. I want to use dual primary mode, in order to be able to write to both nodes concurrently. If I interpret http://www.drbd.org/users-guide/s-dual-primary-mode.html correctly dual-primary-mode requires the use of a shared cluster file system that utilizes a distributed lock manager, such as GFS(2) or OCFS2 filesystem. I was wondering if using ext3 is also possible when using dual primary mode. The DRBD-docs seem to state that this is impossible. I was amazed, that according to the Ubuntu server guide, https://help.ubuntu.com/9.04/serverguide/C/drbd.html this seems a possible setup. The example on that page uses "allow-two-primaries" and ext3 as filesystem. Can you tell me if the Ubuntu page is wrong, or that it's (now) possible to use ext3 with dual-primary-mode. Is it also possible and recommended to use a LVM RAID0 as a DRBD source disk? E.g. LVM2 RAID0 of 2 disks <-> DRBD <-> EXT3 | OCFS2 | GFS2 If using ext3 is not an option, which is preferable? OCFS2 or GFS2? I'm using a Ubuntu 9.04 server, with the DRBD-nodes as virtual machines based on KVM. I'm hoping somebody can answer my questions, Regards, Pieter