Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi drbd folks, We have been using DRBD with heartbeat for several years now. The load averages on our RedHat servers have almost always stayed below 1.0. Suddenly last week the loads jumped up to 12-14 on both servers. They go down at night, when the usage goes down, but by mid-day every business day they are back to 14. We don't see anything out of the ordinary in logs, no drive warning lights, no degraded RAID, nothing especially out of bounds in iostat, NFS is running smoothly, tcpdump doesn't show any nastiness (that we can see).... We have run out of ideas. Our setup is 2 disk arrays, with each server the fail-over for the other. These are POP/IMAP accounts with half the alphabet on one server and half on the other. If one server fails, the other one takes over all of the alphabet. Each letter is a separate resource, with a separate IP, etc. The size of the letter partitions range from 5G to 120G. The pop/imap servers access the letters via NFS3. RedHat 5.3 (2.6.18-128.1.10.el5) DRBD 8.3.1 Heartbeat 2.1.4 Has anyone seen this sort of behavior before, and if so, what the heck is happening? We would appreciate any suggestions. TIA, - Richard