Re: [Users] Problem in 3.3 with shmmax configuration
On 11/04/2013 05:43 AM, Sandro Bonazzola wrote:
Il 02/11/2013 17:51, Bob Doolittle ha scritto:
> Hi,
>
> I'm setting up Engine for the 2nd time - the first time I answered a
configuration question wrong. So I did:
>
> engine-setup
> engine-cleanup
> engine-setup
>
> Things worked, until I rebooted the system. I found that postgresql would not
startup, and was failing with "could not create shared memory segment:
> Invalid Argument".
>
> I resolved this issue by creating a file /etc/sysctl.d/10-shmmax.conf, containing the
line:
> kernel.shmmax = 1000000000
>
> (I read somewhere that postgresql recommends setting shmmax to 1/4 of physical
memory, and I have 4GB)
>
> 1. Is this a known bug? If not, should I file one? If so, how do I do that? :)
Which version are you installing?
3.3, on Fedora 19.
Can you please attach all 3 logs from above sequence (setup, cleanup,
setup)?
I think something may have gone wrong on second setup execution while setting shmmax.
Unfortunately I no longer have those logs.
*However* last night I powered down my node and engine. Last night
engine would at least come up.
Now when I boot up my engine I get the same error. So my guess is that
the shmmax setting isn't being configured in a persistent fashion
somehow, or is somehow reverting.
My most recent setup log is here (I hate to send large logs to lists):
https://dl.dropboxusercontent.com/u/35965416/ovirt-engine-setup-201311031...
-Bob
> 2. Is there a better fix than the one I settled on? Does the
normal configuration wind up increasing shmmax, or reducing postgresql's limits? What
are
> the default values for this in a normal engine configuration?
No better fix, engine-setup just do something like that, setting shmmax to 35554432.
> Thanks,
> Bob
>
>
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