[ovirt-users] No MAC addresses left in the MAC Address Pool

[Amador Pahim]

On 11/06/2015 07:42 AM, nicolas at devels.es wrote:
> Hi,
>
> We're running oVirt 3.5.3.1-1. One of our users is trying to create a 
> new VM. However, he gets the following warning:
>
> 2015-11-05 17:33:12,596 WARN 
> [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] 
> (ajp--127.0.0.1-8702-23) [7a0ba949] Correlation ID: null, Call Stack: 
> null, Custom Event ID: -1, Message: No MAC addresses left in the MAC 
> Address Pool.
> 2015-11-05 17:33:28,804 WARN 
> [org.ovirt.engine.core.bll.CloneVmCommand] (ajp--127.0.0.1-8702-18) 
> [22611dad] CanDoAction of action CloneVm failed for user XXX at YYY. 
> Reasons: VAR__ACTION__ADD,VAR__TYPE__VM,MAC_POOL_NOT_ENOUGH_MAC_ADDRESSES
>
> Is there a way to increase the MAC Pool?

There are 2 settings to play here:

# engine-config -g MaxMacsCountInPool
MaxMacsCountInPool: 100000 version: general

# engine-config -g MacPoolRanges
MacPoolRanges: 00:1a:4a:ab:64:00-00:1a:4a:ab:64:ff version: general

You're probably exhausting the MacPoolRanges. You can either extend the 
current range or add a new range, using commas between the ranges:

# engine-config -s 
"MacPoolRanges=00:1a:4a:ab:64:00-00:1a:4a:ab:64:ff,00:1A:4A:97:5F:00-00:1A:4A:97:5F:FF"

Then restart ovirt-engine service.

Iirc, this setting is changing to the UI in ovirt 3.6.


>
> Thanks.
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