[Gluster-users] Can glusterd be restarted running on all nodes at once while clients are mounted?

[Serkan Çoban]

2500-3000 disks per cluster is maximum usable limit, after that almost
nothing works.
We are using 2700 disk cluster for cold storage with ec.
Be careful on heal operations, i see 1 week /8T heal throughput...
On Sun, Nov 25, 2018 at 6:16 PM Andreas Davour <ante at update.uu.se> wrote:
>
> On Sun, 25 Nov 2018, Jeevan Patnaik wrote:
>
> > Hi Andreas,
> >
> > Before rebooting, I have tried some performance tuning inorder to prevent
> > timeout errors. As we have  sufficient  RAM and cpu power,  I have
> > increased transport.listen-backlog in Kernel and syn_backlog and
> > max-connections in Kernel. So, I expected that it won't cause a problem.
> > Also the NFS clients are mounted but not being used. And all the nodes are
> > in same network.
> >
> > My assumption was that some slowness in the beginning can be seen, which
> > will be resolved automatically.
> >
> > Is it still a base idea to have 72 nodes and starting them at once?
>
> The reason for my question is that we have a cluster of 16 nodes, and
> see excessive metadata ops slowdowns, and it seems to be at least
> partially because of the size of the cluster.
>
> /andreas
>
> --
> "economics is a pseudoscience; the astrology of our time"
> Kim Stanley Robinson
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