[ceph-users] Re: how to sync data on two site CephFS

2023-02-16 Thread Robert Sander
Hi, On 16.02.23 12:53, zxcs wrote: we already have a CephFS cluster, called A, and now we want to setup another CephFS cluster(called B) in other site. And we need to synchronize data with each other for some directory(if all directory can synchronize , then very very good), Means when we

[ceph-users] Re: how to sync data on two site CephFS

2023-02-16 Thread Eugen Block
Hi, if you have Pacific or later running you might want look into CephFS mirroring [1]. Basically, it's about (asynchronous) snapshot mirroring: For a given snapshot pair in a directory, cephfs-mirror daemon will rely on readdir diff to identify changes in a directory tree. The diffs are