2009/6/7 FM <[email protected]>
> Hello
> 2 of 3 of my xen nodes ( dom0) died tonight because of out of memory error.
> These servers are only running Xen and cluster suite packages.
> I googled the error and everything point out to dom0-min-mem option of xen
>
> I left it by default : (dom0-min-mem 256)
>
> I read about on the internet but still do not understand this parameter and
> if if should be =0 on servers
>
> any advice ?
>
My xen servers have
kernel /boot/xen.gz dom0_mem=582M
I don't know why I arrived at that actual value, it may be a typo.
Basically, however, that fixes dom0's memory at enough to handle its I/O
demands and not a lot else.
It sounds as though if you're running out of memory in dom0 that you've
either ballooned too low or you're trying to use dom0 as a general purpose
machine -- best practice seems to be to use dom0 as management for the
domU's and nothing else.
jch
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