You right. Forgot to mention that the client was using kernel 4.9.9.

> 19 июля 2017 г., в 12:36, 许雪寒 <xuxue...@360.cn> написал(а):
> 
> Hi, thanks for your sharing:-)
> 
> So I guess you have not put cephfs into real production environment, and it's 
> still in test phase, right?
> 
> Thanks again:-)
> 
> 发件人: Дмитрий Глушенок [mailto:gl...@jet.msk.su] 
> 发送时间: 2017年7月19日 17:33
> 收件人: 许雪寒
> 抄送: ceph-users@lists.ceph.com
> 主题: Re: [ceph-users] How's cephfs going?
> 
> Hi,
> 
> I can share negative test results (on Jewel 10.2.6). All tests were performed 
> while actively writing to CephFS from single client (about 1300 MB/sec). 
> Cluster consists of 8 nodes, 8 OSD each (2 SSD for journals and metadata, 6 
> HDD RAID6 for data), MON/MDS are on dedicated nodes. 2 MDS at all, 
> active/standby.
> - Crashing one node resulted in write hangs for 17 minutes. Repeating the 
> test resulted in CephFS hangs forever.
> - Restarting active MDS resulted in successful failover to standby. Then, 
> after standby became active and the restarted MDS became standby the new 
> active was restarted. CephFS hanged for 12 minutes.
> 
> P.S. Planning to repeat the tests again on 10.2.7 or higher
> 
> 19 июля 2017 г., в 6:47, 许雪寒 <xuxue...@360.cn> написал(а):
> 
> Is there anyone else willing to share some usage information of cephfs?
> Could developers tell whether cephfs is a major effort in the whole ceph 
> development?
> 
> 发件人: 许雪寒 
> 发送时间: 2017年7月17日 11:00
> 收件人: ceph-users@lists.ceph.com
> 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?
> _______________________________________________
> ceph-users mailing list
> ceph-users@lists.ceph.com
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> 
> --
> Dmitry Glushenok
> Jet Infosystems
> 

--
Дмитрий Глушенок
Инфосистемы Джет
+7-910-453-2568

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