On Aug 5, 2004, akonstam@xxxxxxxxxxx wrote: > Mdmpd fails to start on our Fedora Core 2 systems with the error: > Kernel md module does not support events > We are currently running Kernel 2.6.7-1.494.2.2 > but the ame thing was happening in earlier kernels. > What does this daemon do, and under what circumstances would we need > it? It's equivalent to mdmonitor (that quite likely starts as well, and successfully), with the difference that mdmonitor doesn't rely on a line looking like `Events: ##' in /proc/mdstat. The RHEL kernel has such a line, that enables a slightly more efficient raid event monitor, since it can immediately tell that nothing changed if the event count matches what it got last it looked at the file. IMHO it's a mistake to ship mdmpd in FC, and a double mistake to ship it enabled by default, especially given the noisy failure mode. The init script should probably integrate mdmpd and mdmonitor into a single init script that tests for Events: support in the kernel and starts the most efficient md monitor or so. -- Alexandre Oliva http://www.ic.unicamp.br/~oliva/ Red Hat Compiler Engineer aoliva@{redhat.com, gcc.gnu.org} Free Software Evangelist oliva@{lsd.ic.unicamp.br, gnu.org}
