The reason I began researching this type of replication is that we had several applications that could not be easily clustered because they had some persistant data such as logs and state information that was stored locally on disk. So it seemed like the best way was to create drbd disks, I went with the active/active disk configuration in DRBD8, and putting OCFS2 on top of it.
First note that as a rule of thumb I never build custom kernels. Maybe I am too new school, but I figure if the application does not work with the kernel I am running now it is very bleeding edge and probably not ready for mainstream deployment. I did find that OCFS2 and or DRBB 0.8 would not work with the stock FC5 kernel. A yum update to the newest kernel got the system to the point of running the software in memory without Dynamic Link issues. Firstly I had to handle the drbd partitioning. This is not a big deal but, its not 1,2,3. You can not really kickstart it well. have to configure OCFS2, have to open firewall ports, also add a crossover cable, put the system on two networks. But I did get it up and working in active/active mode. I should have ran UnixBench on it to see the raw performance but I did not. Also at the time the OCF could not handle active/active drbd configurations. I hacked together some LSB scripts for DRBD, ocfs2. All in all the setup time was vast. I felt that I could get better value out of one machine well administered and backed up. the major problem is that you had to be an HA expert, a DRBD expert, and an OCFS expert to get anything working on the systems. I think the active active ocfs2 would be great for a large SAN type disk, but it was just too much management for servers you would like to replicate. On Feb 18, 2008 11:39 AM, Atul Athavale <[EMAIL PROTECTED]> wrote: > Hello, > > You may find some starting point at > > http://wiki.linux-ha.org/AtulAthavale > > or at > > http://www.debian-administration.org/articles/578 > > Regards, > > Atul Athavale. > > _______________________________________________ > Linux-HA mailing list > [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems > _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
