Hi On 05/21/2018 05:38 PM, Jake Grimmett wrote: > Unfortunately we have a large number (~200) of Windows and Macs clients > which need CIFS/SMB access to cephfs.
we too, which is why we're (partially) exporting cephfs over samba too, 1.5y in production now. for us, cephfs-over-samba is significantly slower than cephfs directly too, but it's not really an issue here (basically, if people use a windows client here, they're already on the slow track anyway). we had to do two things to get it working reliably though: a) disable all locking on samba (otherwise "opportunistic locking" on windows clients killed within hours all mds (kraken at that time)) b) only allow writes to a specific space on cephfs, reserved to samba (with luminous; otherwise, we'd have problems with data consistency on cephfs with people writing the same files from linux->cephfs and samba->cephfs concurrently). my hunch is that samba caches writes and doesn't give them back appropriatly. > Finally, is the vfs_ceph module for Samba useful? It doesn't seem to be > widely available pre-complied for for RHEL derivatives. Can anyone > comment on their experiences using vfs_ceph, or point me to a Centos 7.x > repo that has it? we use debian, with backported kernel and backported samba, which has vfs_ceph pre-compiled. however, we couldn't make vfs_ceph work at all - the snapshot patters just don't seem to match/align (and nothing we tried seem to work). Regards, Daniel _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
