On 26/06/2020 6:31 pm, Zhenshi Zhou wrote:
I'm going to deploy a cluster with erasure code pool for cold storage. There are 3 servers for me to set up the cluster, 12 OSDs on each server. Does that mean the data is secure while 1/3 OSDs of the cluster is down, or only 2 of the OSDs is down , if I set the ec profile with k=4 and m=2.
Default failure mode is by host, so ec(4,2) needs a minimum of 6 hosts and while that could could function with up to two hosts down, it would be unable to rebalance.
3 hosts only supports k=2, m=1 - not recommend ;) -- Lindsay _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
