On Mon, Mar 29, 2021 at 3:35 AM Ulrich Windl < ulrich.wi...@rz.uni-regensburg.de> wrote:
> >>> d tbsky <tbs...@gmail.com> schrieb am 29.03.2021 um 04:01 in Nachricht > <CAC6SzHLi0ufVhE3RM57e2V=t_moml5ecx8ay3gtcfgmofkd...@mail.gmail.com>: > > Hi: > > since the vm start/stop at once will consume disk IO, I want to > > start/stop the vm > > one‑by‑one with delay. > > I'm surprised that in these days of fast disks and SSDs this is still an > issue. > Maybe don't delay the start, but limit concurrent starts. > Or maybe add some weak ordering between the VMs. > kind=Serialize does this. It makes the resources start consecutively, in no particular order. I added the comment about ocf:heartbeat:Delay because D mentioned wanting a delay... but I don't see why it would be necessary, if Serialize is used. > > > > search the email‑list I found the discussion > > https://oss.clusterlabs.org/pipermail/pacemaker/2013‑August/043128.html > > > > now I am testing rhel8 with pacemaker 2.0.4. I wonder if there are > > new methods to solve the problem. I search the document but didn't > > find new parameters for the job. > > > > if possible I don't want to modify VirtualDomain RA which comes > > with standard rpm package. maybe I should write a new RA which stagger > > the node utilization. but if I reset the node utilization when cluster > > restart, there maybe a race condition. > > > > thanks for help! > > _______________________________________________ > > Manage your subscription: > > https://lists.clusterlabs.org/mailman/listinfo/users > > > > ClusterLabs home: https://www.clusterlabs.org/ > > > > _______________________________________________ > Manage your subscription: > https://lists.clusterlabs.org/mailman/listinfo/users > > ClusterLabs home: https://www.clusterlabs.org/ > -- Regards, Reid Wahl, RHCA Senior Software Maintenance Engineer, Red Hat CEE - Platform Support Delivery - ClusterHA
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