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:
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
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