Is BalancerPersist Off or On? Those .shm files should only stick around if we want to persist state across restarts.
On Nov 6, 2013, at 8:39 AM, Thomas Eckert <[email protected]> wrote: > As of late I'm seeing a lot of > > AH01179: balancer slotmem_create failed > > error messages which prevent apache2 from starting. I do have > > DefaultRuntimeDir /var/run/apache2 > > set. For some reasons there appear to be "left-over" .shm files in the > DefaultRunTimeDir between stop-starts/restarts which then get picked up by > mod_slotmem when mod_proxy asks it for shared memory. Unfortunately, those > .shm files sometimes have the wrong size and get rejected by the mod_slotmem > code due to size mismatch. > > To me it looks like this situation suffers from the same issue as reported in > https://issues.apache.org/bugzilla/show_bug.cgi?id=55449 > though I only have one user (nobody) for all the worker processes. > > I get the systems back up and running by deleting all .shm files in the > DefaultRunTimeDir between stop-starts/restarts but this seems fragile to me. > Another workaround, as crude as it is, seems to be disabling the reusing of > existing shared memory segments by setting > > fbased = 0; > > in modules/slotmem/mod_slotmem_shm.c in slotmem_create(). > > Neither of those two appraoches seems "right" to me. I do need at least a > temporary workaround since this is causing major havoc.
