Re: [Users] Can host hooks be used to implement the following policy to avoid "boot storm"?

On 05/26/2013 09:59 AM, Roy Golan wrote: > On 05/24/2013 03:22 PM, Itamar Heim wrote: >> On 05/23/2013 04:23 PM, lofyer wrote: >>> Can host hooks be used to implement the following policy to avoid >>> "boot >>> storm"? >>> >>> 1.count and sort VMs awaiting for boot. >>> 2.If the count is less than or equal to, for example 5, then boot all >>> VMs and exit the script. >>> 3.Otherwise, boot and dequeue vm0 to vm4, and minus the count by 5. >>> 4.Sleep some time, and go to step 2. >>> _______________________________________________ >>> Users mailing list >>> Users(a)ovirt.org >>> http://lists.ovirt.org/mailman/listinfo/users >> >> hooks run one on vm-start one by one. would be a bit tricky to do the >> above. >> roy - didn't you add some mechanism to throttle boot storms in the >> engine? > yes at RunVmCommandBase.delay(Guid vdsId) - but it doesn't fit here. > It'll delay the VM run only when there is no free memory to run the VM > and will wait till engine signals after gathering statistics of > powering up VMs. lofyer - any other issue other than memory bottleneck you were trying to resolve? Thanks, Itamar