Hi Nathan,

Thanks for the help.
My colleague will provide more details.

BR

On Fri, Nov 29, 2019 at 12:57 PM Nathan Fish <lordci...@gmail.com> wrote:

> If correctly configured, your cluster should have zero downtime from a
> single OSD or node failure. What is your crush map? Are you using
> replica or EC? If your 'min_size' is not smaller than 'size', then you
> will lose availability.
>
> On Thu, Nov 28, 2019 at 10:50 PM Peng Bo <pen...@portsip.com> wrote:
> >
> > Hi all,
> >
> > We are working on use CEPH to build our HA system, the purpose is the
> system should always provide service even a node of CEPH is down or OSD is
> lost.
> >
> > Currently, as we practiced once a node/OSD is down, the CEPH cluster
> needs to take about 40 seconds to sync data, our system can't provide
> service during that.
> >
> > My questions:
> >
> > Does there have any way that we can reduce the data sync time?
> > How can we let the CEPH keeps available once a node/OSD is down?
> >
> >
> > BR
> >
> > --
> > The modern Unified Communications provider
> >
> > https://www.portsip.com
> > _______________________________________________
> > ceph-users mailing list
> > ceph-users@lists.ceph.com
> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>


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