Open Stack

I wanted to lunch an instance that is set with 16GB in Openstack Folsom
env. and when I looked at the logs, I saw that it failed to lunch on a host
for not having enough memory:

host '<removed for privacy>': free_ram_mb:20873 free_disk_mb:684032 does
> not have 16384 MB usable ram, it only has 14433.7 MB usable ram.
>

This host has 64GB and currently has three instances in Active state that
together use only 24GB (16GB + 4GB + 4GB). 'top' tool in the host shows
that it's using 56GB.

So my question is, how can you relay on filters if you can't control the
host resources? How can I limit the RAM that the host uses and "reserve"
that RAM for instances?

*Thanks,*

*---
Shai
*

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