Re: Client still connect failed leader after that mon down

2015-12-17 Thread Jevon Qiao
On 17/12/15 21:27, Sage Weil wrote: On Thu, 17 Dec 2015, Jaze Lee wrote: Hello cephers: In our test, there are three monitors. We find client run ceph command will slow when the leader mon is down. Even after long time, a client run ceph command will also slow in first time. >From strace,

Re: why package ceph-fuse needs packages ceph?

2015-10-26 Thread Jevon Qiao
Hi Sage, Here comes another question, does ceph-fuse support Unix OS(like HP-UNIX or AIX)? Thanks, Jevon On 26/10/15 15:19, Sage Weil wrote: On Mon, 26 Oct 2015, Jaze Lee wrote: Hello, I think the ceph-fuse is just a client, why it needs packages ceph? I found when i install

Re: Seek advice for using Ceph to provice NAS service

2015-09-24 Thread Jevon Qiao
Any comments or suggestions? Thanks, Jevon On 23/9/15 10:21, Jevon Qiao wrote: Hi Sage and other Ceph experts, This is a greeting from Jevon, I'm from China and working in a company which are using Ceph as the backend storage. At present, I'm evaluating the following two options of using

Seek advice for using Ceph to provice NAS service

2015-09-22 Thread Jevon Qiao
Hi Sage and other Ceph experts, This is a greeting from Jevon, I'm from China and working in a company which are using Ceph as the backend storage. At present, I'm evaluating the following two options of using Ceph cluster to provide NAS service and I need your advice from the perspective of

Re: [ceph-users] Is it safe to increase pg number in a production environment

2015-08-06 Thread Jevon Qiao
Hi Jan, Thank you very much for the suggestion. Regards, Jevon On 5/8/15 19:36, Jan Schermer wrote: Hi, comments inline. On 05 Aug 2015, at 05:45, Jevon Qiao qiaojianf...@unitedstack.com wrote: Hi Jan, Thank you for the detailed suggestion. Please see my reply in-line. On 5/8/15 01:23, Jan

Re: [ceph-users] Is it safe to increase pg number in a production environment

2015-08-04 Thread Jevon Qiao
Thank you and Samuel for the prompt response. On 5/8/15 00:52, Marek Dohojda wrote: I have done this not that long ago. My original PG estimates were wrong and I had to increase them. After increasing the PG numbers the Ceph rebalanced, and that took a while. To be honest in my case the

Re: [ceph-users] Is it safe to increase pg number in a production environment

2015-08-04 Thread Jevon Qiao
Got it, thank you for the suggestion. Regards, Jevon On 5/8/15 00:51, Stefan Priebe wrote: We've done the splitting several times. The most important thing is to run a ceph version which does not have the linger ops bug. This is dumpling latest release, giant and hammer. Latest firefly

Re: [ceph-users] Is it safe to increase pg number in a production environment

2015-08-04 Thread Jevon Qiao
Hi Jan, Thank you for the detailed suggestion. Please see my reply in-line. On 5/8/15 01:23, Jan Schermer wrote: I think I wrote about my experience with this about 3 months ago, including what techniques I used to minimize impact on production. Basicaly we had to 1) increase pg_num in small