if a OSD becomes unavailble (broken disk, rebooting server) then all I/O to the PGs stored on that OSD will block until replication level of 2 is reached again. So, for a highly available cluster you need a replication level of 3 On Wed, 2021-02-03 at 10:24 +0100, Mario Giammarco wrote: > Hello, > Imagine this situation: > - 3 servers with ceph > - a pool with size 2 min 1 > > I know perfectly the size 3 and min 2 is better. > I would like to know what is the worst thing that can happen: > > - a disk breaks and another disk breaks before ceph has reconstructed > second replica, ok I lose data > > - if network goes down and so monitors lose quorum do ceph still > write on > disks? > > What else? > > The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336. _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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