On Jun 5, 2014 2:34 PM, "Itamar Heim" <iheim@redhat.com> wrote:

On 06/05/2014 10:30 PM, Jeff Clay wrote:

126455 MB total, 863 MB used, 125592 MB free
  That's what I'm showing right now, but I don't have as many VM's
running at the moment. There are currently 8 running and I was getting
that issue yesterday when I got around the 15 vm mark.











On Thu, Jun 5, 2014 at 2:07 PM, Itamar Heim <iheim@redhat.com
<mailto:iheim@redhat.com>> wrote:

    On 06/05/2014 02:24 AM, Jeff Clay wrote:

        I'm getting the following error trying to start a VM. I have 64
        gb of
        RAM on this host. I got this error once before and found that my
        swap
        partition was only 2gb or so. I increased the swap size to 124GB
        and the
        problem went away. Below is the error when trying to start a VM and
        below that is what my output from "free -g". I don't see why I'm
        getting
        a swap file error when there's plenty of it available.


           * Cannot run VM. Host swap percentage is above the defined
        threshold.

             - Check your configuration parameters for Host Swap Percentage.
           * Cannot run VM. There is no host that satisfies current
        scheduling

             constraints. See below for details:
           * The host USARPAOVRTHOST02 did not satisfy internal filter
        Memory.




        [root@usarpaovrthost02 ~]# free -g
                       total       used       free     shared    buffers
             cached
        Mem:            62         62          0          0          0
               12
        -/+ buffers/cache:         50         12
        Swap:          123         12        110
        [root@usarpaovrthost02 ~]#
        [root@usarpaovrthost02 ~]#
        [root@usarpaovrthost02 ~]# swapon -s
        Filename                                Type            Size    Used
        Priority
        /dev/dm-1                               partition       129490936
        12811000        -1
        [root@usarpaovrthost02 ~]#



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    what do you see under host general subtab for swap percentage?

iirc, you can either disable the swap check via the config EnableSwapCheck, or change the threshold via BlockMigrationOnSwapUsagePercentage
(which would be a confusing name if it affects RunVm and not only migration...)