Thank you for the clarification. On Mon, May 1, 2023, 20:11 Wesley Dillingham <wes@xxxxxxxxxxxxxxxxx> wrote: > Assuming size=3 and min_size=2 It will run degraded (read/write capable) > until a third host becomes available at which point it will backfill the > third copy on the third host. It will be unable to create the third copy of > data if no third host exists. If an additional host is lost the data will > become inactive+degraded (below min_size) and will be unavailable for use. > Though data will not be lost assuming no further failures beyond the 2 full > hosts occurs and again if the second and third host comes back the data > will recover. Always best to have an additional host beyond the size > setting for this reason. > > Respectfully, > > *Wes Dillingham* > wes@xxxxxxxxxxxxxxxxx > LinkedIn <http://www.linkedin.com/in/wesleydillingham> > > > On Mon, May 1, 2023 at 11:34 AM wodel youchi <wodel.youchi@xxxxxxxxx> > wrote: > >> Hi, >> >> When creating a ceph cluster, a failover domain is created, and by default >> it uses host as a minimal domain, that domain can be modified to chassis, >> or rack, ...etc. >> >> My question is : >> Suppose I have three osd nodes, my replication is 3 and my failover domain >> is host, which means that each copy of data is stored on a different node. >> >> What happens when one node crashes, does Ceph use the remaining free space >> on the other two to create the third copy, or the ceph cluster will run in >> degraded mode, like a RAID5 >> which lost a disk. >> >> Regards. >> _______________________________________________ >> ceph-users mailing list -- ceph-users@xxxxxxx >> To unsubscribe send an email to ceph-users-leave@xxxxxxx >> > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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