Re: [ceph-users] cephfs: some metadata operations take seconds to complete

2017-10-17 Thread Tyanko Aleksiev
Thanks for the replies. I'll move all our testbed installation to Luminous and redo the tests. Cheers, Tyanko On 17 October 2017 at 10:14, Yan, Zheng <uker...@gmail.com> wrote: > On Tue, Oct 17, 2017 at 1:07 AM, Tyanko Aleksiev > <tyanko.alex...@gmail.com> wrote: > &g

[ceph-users] cephfs: some metadata operations take seconds to complete

2017-10-16 Thread Tyanko Aleksiev
Hi, At UZH we are currently evaluating cephfs as a distributed file system for the scratch space of an HPC installation. Some slow down of the metadata operations seems to occur under certain circumstances. In particular, commands issued after some big file deletion could take several

Re: [ceph-users] extending ceph cluster with osds close to near full ratio (85%)

2017-02-20 Thread Tyanko Aleksiev
Hi Brian, On 14 February 2017 at 19:33, Brian Andrus <brian.and...@dreamhost.com> wrote: > > > On Tue, Feb 14, 2017 at 5:27 AM, Tyanko Aleksiev <tyanko.alex...@gmail.com > > wrote: > >> Hi Cephers, >> >> At University of Zurich we are using Ce

[ceph-users] extending ceph cluster with osds close to near full ratio (85%)

2017-02-14 Thread Tyanko Aleksiev
Hi Cephers, At University of Zurich we are using Ceph as a storage back-end for our OpenStack installation. Since we recently reached 70% of occupancy (mostly caused by the cinder pool served by 16384PGs) we are in the phase of extending the cluster with additional storage nodes of the same type