On Wed, Jul 19, 2017 at 4:47 AM, 许雪寒 <xuxuehan@xxxxxx> wrote:
Is there anyone else willing to share some usage information of cephfs?
I look after 2 Cephfs deployments, both Jewel, been in production since Jewel went stable so just over a year I think. We've had a really positive experience, I've not experienced any MDS crashes or read-only operation (touch wood!). The majority of clients are accessing through gateway servers re-exporting over SMB and NFS. Data is mixed but lots of image sequences/video.
Workload is primarily large reads but clients are all 1GbE currently (gateway servers are on faster links) so I'd say our performance requirements are modest. If/when we get clients on 10GbE we'll probably need to start looking at performance more closely, definitely playing around with stripe settings.
As I think someone already mentioned, the recursive stats are awesome. I use the Python xattr module to grab the stats and format with the prettytable library, it's a real pleasure to not have to wait for du to stat through the directory tree. Thinking about doing something cool with Kibana in the future.
The main issues we've had are with Kernel NFS, writes are currently slow in Jewel, see http://tracker.ceph.com/issues/17563. That was fixed in master (https://github.com/ceph/ceph/pull/11710) but I don't think that will make its way into Jewel so I'm eagerly awaiting stable Luminous. I've also experienced nfsd lock ups when OSDs fail.
Hope that helps a bit
Could developers tell whether cephfs is a major effort in the whole ceph development?
I'm not a dev but I can confidently say this is very actively being worked on.
发件人: 许雪寒
发送时间: 2017年7月17日 11:00
收件人: ceph-users@xxxxxxxxxxxxxx
主题: How's cephfs going?
Hi, everyone.
We intend to use cephfs of Jewel version, however, we don’t know its status. Is it production ready in Jewel? Does it still have lots of bugs? Is it a major effort of the current ceph development? And who are using cephfs now?
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