Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
In a previous thread it was suggested that I should upgrade to drbd-8.0.14 from drbd-8.0.8 since I am required to upgrade my two node cluster's kernels from kernel-2.6.23.8-63.fc8 to kernel-2.6.26.6-49.fc8 since the 2.6.26 kernel will not work with drbd-8.0.8. So that's what I am going to do, but I am having difficulty on how to proceed. The system is a intranet with mysql and http running on it that is highly used. Heartbeat takes care of starting everything. I have searched for a method to do this upgrade and have not been able to find anything I can use. I would like to keep the original kernel and drbd kernel module in place in order to reboot to original state if something goes wrong. Will the following work: On Backup node: Download drdb-8.0.14 unpack cd drbd-8.0.14/drbd make clean make KDIR=/usr/src/kernels/2.6.26.6-49.fc8-i686 make install Reboot system to new kernel and new drbd.ko module and let heartbeat control startup of services as required. Once that seems to work, fail over to standby system and let it take over services and repeat the above on the primary mode. Reboot primary and let heartbeat mount drbd drive, assume services etc. Does this seem reasonable? A few questions: 1.Can you run two different versions of drbd on each node (pri- 8.0.8 sec-8.0.14) until you completely migrate to the new version of drbd? 2.Do the drbd tools need to be rebuilt? If so, won't it overwrite the drbd tools already there making it hard to revert back? I may be making this harder than it needs to be, but I inherited this setup. That's why all the questions. Thanks for any help.