On Feb 3, 2014, at 16:20 , Gianluca Cecchi <[email protected]> wrote:
> On Mon, Feb 3, 2014 at 1:43 PM, Michal Skrivanek > <[email protected]> wrote: >> >> On Feb 1, 2014, at 18:25 , Itamar Heim <[email protected]> wrote: >> >>> On 01/31/2014 09:30 AM, Sven Kieske wrote: >>>> Hi, >>>> >>>> is there any documentation regarding all >>>> allowed settings in the vdsm.conf? >>>> >>>> I didn't find anything related in the rhev docs >>> >>> that's a question for vdsm mailing list - cc-ing… >> >> the vdsm.conf has a description for each parameter…just search for all >> containing "migration":) >> we do want to expose some/most/all of them in UI/REST eventually, the >> "migration downtime" setting is there now in 3.4, but others are missing >> >> Thanks, >> michal >>> >>>> >>>> Am 30.01.2014 21:43, schrieb Itamar Heim: >>>>> On 01/30/2014 10:37 PM, Markus Stockhausen wrote: >>>>>>>> Von: Itamar Heim [[email protected]] >>>>>>>> Gesendet: Donnerstag, 30. Januar 2014 21:25 >>>>>>>> An: Markus Stockhausen; ovirt-users >>>>>>>> Betreff: Re: [Users] Migration failed (previous migrations succeded) >>>>>>>> >>>>>>>> >>>>>>>> Now I' getting serious problems. During the migration the VM was >>>>>>>> doing a rather slow download at 1,5 MB/s. So the memory changed >>>>>>>> by 15 MB per 10 seconds. No wonder that a check every 10 seconds >>>>>>>> was not able to see any progress. Im scared what will happen if I >>>>>>>> want to migrate a medium loaded system runing a database. >>>>>>>> >>>>>>>> Any tip for a parametrization? >>>>>>>> >>>>>>>> Markus >>>>>>>> >>>>>>> >>>>>>> what's the bandwidth? default is up to 30MB/sec, to allow up to 3 VMs to >>>>>>> migrate on 1Gb without congesting it. >>>>>>> you could raise that if you have 10GB, or raise the bandwidth cap and >>>>>>> reduce max number of concurrent VMs, etc. >>>>>> >>>>>> My migration network is IPoIB 10GBit. During our tests only one VM >>>>>> was migrated. Bandwidth cap or number of concurrent VMs has not >>>>>> been changed after default install. >>>>>> >>>>>> Is migration_max_bandwidth in /etc/vdsm/vdsm.conf still the right place? >>>>> >>>>> probably >>>>> >>>>>> And what settings do you suggest? >>>>> > > > Not tried myself the change of values, but in a previous thread > (actually for limiting and not speeding up migration ;-) these two > parameters were described and to be put in each /etc/vdsm/vdsm.conf yep, they have (brief) description there > > max_outgoing_migrations > (eg 1 for allowing only one migration at a time) > > migration_max_bandwidth > (unit is in MBytes/s, vdsm default is 32MiBps and it is for single > migration, not overall) > > I think it is necessary to follow this workflow for every host unfortunately yes > - put host into maintenance > - stop vdsmd service > - change values > - start vdsmd service > - activate host > > Gianluca _______________________________________________ Users mailing list [email protected] http://lists.ovirt.org/mailman/listinfo/users
