Re: [Users] Installation problem

From: "Joop" <jvdwege(a)xs4all.nl&gt; To: "Dave Neary" <dneary(a)redhat.com&gt; Cc: "users" <users(a)ovirt.org&gt; Sent: Friday, September 21, 2012 9:57:02 AM Subject: Re: [Users] Installation problem Dave Neary wrote: > > > It turns out, in /var/log/messages, that I have these error > messages: >> Sep 21 14:00:59 clare pg_ctl[5298]: FATAL: could not create >> shared >> memory segment: Invalid argument >> Sep 21 14:00:59 clare pg_ctl[5298]: DETAIL: Failed system call >> was >> shmget(key=5432001, size=36519936, 03600). >> Sep 21 14:00:59 clare pg_ctl[5298]: HINT: This error usually >> means >> that PostgreSQL's request for a shared memory segment exceeded >> your >> kernel's SHMMAX parameter. You can either reduce the request size >> or >> reconfigure the kernel with larger SHMMAX. To reduce the request >> size (currently 36519936 bytes), reduce PostgreSQL's shared memory >> usage, perhaps by reducing shared_buffers or max_connections. >> Sep 21 14:00:59 clare pg_ctl[5298]: If the request size is already >> small, it's possible that it is less than your kernel's SHMMIN >> parameter, in which case raising the request size or reconfiguring >> SHMMIN is called for. >> Sep 21 14:00:59 clare pg_ctl[5298]: The PostgreSQL documentation >> contains more information about shared memory configuration. >> Sep 21 14:01:03 clare pg_ctl[5298]: pg_ctl: could not start server >> Sep 21 14:01:03 clare pg_ctl[5298]: Examine the log output. >> Sep 21 14:01:03 clare systemd[1]: postgresql.service: control >> process >> exited, code=exited status=1 >> Sep 21 14:01:03 clare systemd[1]: Unit postgresql.service entered >> failed state. > > I increased the kernel's SHMMAX, and engine-cleanup worked > correctly. > > Has anyone else experienced this issue? Yes, not related to oVirt but on a database server also running Postgres. It seems that either the package maintainer is very conservative or postgres itself is. Standard on the Debian 6 server was also very low shmmax. What is the OS you run ovirt-engine on?