Re: [ceph-users] when recovering start

Hi Stephane, I dump from a osd deamon Thanks Jian LI At 2015-04-08 16:05:04, "Stéphane DUGRAVOT" wrote: - Le 7 Avr 15, à 14:57, lijian a écrit : Haomai Wang, the mon_osd_down_out_interval is 300, please refer to my settings, and I use the cli 'service ceph

Re: [ceph-users] when recovering start

At 2015-04-07 20:38:29, "Haomai Wang" wrote: >Whatever the version you tested, ceph won't recover data when you >manually stop osd immediately. And it will trigger mark down osd out >when it reach "mon_osd_down_out_interval" seconds. > >On Tue, Ap

[ceph-users] when recovering start

Hi, The recovering start delay 300s after I stop a osd and the osd status change from in to out, the test ENV is Ceph 0.80.7 But I test in ceph 0.87.1, the recovering start immediately after I stop a OSD,all the settings is the default value,the following is mon_osd* settings in my test ENV:

Re: [ceph-users] How to collect ceph linux rbd log

Dear Ilya, It works for me, thanks a lot! Jian Li At 2014-11-20 16:19:44, "Ilya Dryomov" wrote: >On Thu, Nov 20, 2014 at 6:47 AM, lijian wrote: >> Hi, >> >> I want to collect linux kernel rbd log, I know it use the dout() method to >> debug after I read

[ceph-users] How to collect ceph linux rbd log

Hi, I want to collect linux kernel rbd log, I know it use the dout() method to debug after I read the linux kernel code, But how to enable it and where I can find it? Thanks Jian Li ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.cep

Re: [ceph-users] flashcache from fb and dm-cache??

Hi German Anders, No more performance improvement for OSDs if use the flashcache, But your can use it for Linux Kernel RBD, please refer to: http://www.sebastien-han.fr/blog/2012/11/15/make-your-rbd-fly-with-flashcache/ Jian Li 在 2014-07-30 10:40:52，"German Anders" 写道： Also, does someo

Re: [ceph-users] How to enable the writeback qemu rbd cache

will also increase the memory footprint of your VM (if you run enough >tests) to that of its memory limits PLUS the cache, verifying that the >cache is actually on. > >RBD caching works well with the default sizes for small, bursty IOs. > >Christian > >On Tue, 8 Jul 2014 21

Re: [ceph-users] How to enable the writeback qemu rbd cache

rbd cache. As for >performance improvement, it's related to your performance tests > >On Tue, Jul 8, 2014 at 8:34 PM, lijian wrote: >> Hello, >> >> I want to enable the qemu rbd writeback cache, the following is the settings >> in

Re: [ceph-users] How to enable the writeback qemu rbd cache

Hi David, I set the writeback in vm qemu definition Thanks! JIan Li 在 2014-07-08 08:47:24，"David" 写道： Do you set cache=writeback in your vm’s qemu conf for that disk? // david 8 jul 2014 kl. 14:34 skrev lijian : Hello, I want to enable the qemu rbd writeback

[ceph-users] How to enable the writeback qemu rbd cache

Hello, I want to enable the qemu rbd writeback cache, the following is the settings in /etc/ceph/ceph.conf [client] rbd_cache = true rbd_cache_writethrough_until_flush = false rbd_cache_size = 27180800 rbd_cache_max_dirty = 20918080 rbd_cache_target_dirty = 16808000 rbd_cache_max_dirty_age = 60

Re: [ceph-users] How to enable the 'fancy striping' in Ceph

5.238e1f29 format: 1 so how to create a striped qeum image? thanks very much! JIan Li At 2014-05-13 06:30:18,"Yan, Zheng" wrote: >the kernel rdb does not support it, you need to use qemu. > >On Mon, May 12, 2014 at 8:00 PM, lijian wrote: >> Hi, >> >&g

[ceph-users] How to enable the 'fancy striping' in Ceph

Hi, I want to create a block image using the rbd cli and followng the rule: stripe-unit * stripe-count = 2^order, Take for example: rbd create --pool rbd --size 20480 --order 21 --image-format 2 --stripe-unit 1048576 --stripe-count 2 image1 But when I try to map to a block device then raise