I've seen issues with clients reconnects on older kernels, yeah. They sometimes get stuck after a network failure
Paul -- Paul Emmerich Looking for help with your Ceph cluster? Contact us at https://croit.io croit GmbH Freseniusstr. 31h 81247 München www.croit.io Tel: +49 89 1896585 90 On Thu, Apr 30, 2020 at 10:19 PM Gregory Farnum <gfar...@redhat.com> wrote: > On Tue, Apr 28, 2020 at 11:52 AM Robert LeBlanc <rob...@leblancnet.us> > wrote: > > > > In the Nautilus manual it recommends >= 4.14 kernel for multiple active > > MDSes. What are the potential issues for running the 4.4 kernel with > > multiple MDSes? We are in the process of upgrading the clients, but at > > times overrun the capacity of a single MDS server. > > I don't think this is documented specifically; you'd have to go > through the git logs. Talked with the team and 4.14 was the upstream > kernel when we marked multi-MDS as stable, with the general stream of > ongoing fixes that always applies there. > > There aren't any known issues that will cause file consistency to > break or anything; I'd be more worried about clients having issues > reconnecting when their network blips or an MDS fails over. > -Greg > > > > > MULTIPLE ACTIVE METADATA SERVERS > > < > https://docs.ceph.com/docs/nautilus/cephfs/kernel-features/#multiple-active-metadata-servers > > > > > > The feature has been supported since the Luminous release. It is > > recommended to use Linux kernel clients >= 4.14 when there are multiple > > active MDS. > > Thank you, > > Robert LeBlanc > > ---------------- > > Robert LeBlanc > > PGP Fingerprint 79A2 9CA4 6CC4 45DD A904 C70E E654 3BB2 FA62 B9F1 > > _______________________________________________ > > ceph-users mailing list -- ceph-users@ceph.io > > To unsubscribe send an email to ceph-users-le...@ceph.io > > > _______________________________________________ > ceph-users mailing list -- ceph-users@ceph.io > To unsubscribe send an email to ceph-users-le...@ceph.io > _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
