[Basic OS]
1.Suse-12-SP1
2.CentOS-7.2 (client)
[Ceph Version]
1.upgrade from 0.94.5 to 10.2.7
2.fresh 10.2.7
[How to Use CephFS]
1.Client using ceph-fuse to mount the cephfs service(it looks like this: ceph-fuse -m <xxx>:6789 <yyy>)
2.Export this CephFS through NFS share.
3.Real Client mount NFS share point as its default workspace.
[Issue]
Now I meet a problem: when mds service do migrate action,client will meet IO issue like :"Stale file handle", IO interrupt .
[Debug]
I found there may some session issue when mds service migrate under HA.
[Solution]
When IO application meet the above issue, then i will do the following steps:
1. Firstly, stop the IO application,
2. Secondly, enter the directory again
3. Then, it will work OK as we expected.
[Question]
1)、I want to know that CephFS session will re-establish while the MDS migrate happened or not.
2)、when i meet this error again in the future , anything method can i using to handle this issue?
