[ceph-users] RBD performance test (write) problem

Hi all, I have some problem after my RBD performance test Setup: Linux kernel: 3.6.11 OS: Ubuntu 12.04 RAID card: LSI MegaRAID SAS 9260-4i For every HDD: RAID0, Write Policy: Write Back with BBU, Read Policy: ReadAhead, IO Policy: Direct Storage server number : 1 Storage server : 8 * HDD (each

Re: [ceph-users] RBD performance test (write) problem

Hi Xiaxi, Thanks your answer !! FIO test: 4MB Sequential write (numjobs=1) : 203 MB/s (close to rados bench write) 4MB Random write (numjobs=8): 145 MB/s but I still have some questions of write performance According to this message: http://www.mail-archive.com/ceph-devel@vger.kernel.org/msg068

Re: [ceph-users] RBD performance test (write) problem

Hi Mark, Sorry, reply too late, because I didn't receive this mail so missed this message in the several days... http://www.mail-archive.com/ceph-users@lists.ceph.com/msg00624.html Your advice are very very helpful to me !!! thanks :) I have done the following test and have some questions 1)

Re: [ceph-users] RBD performance test (write) problem

Hi all, Have any comments about 1) or 2) ? Thanks!!! Hi Mark, Sorry, reply too late, because I didn't receive this mail so missed this message in the several days... http://www.mail-archive.com/ceph-users@lists.ceph.com/msg00624.html Your advice are very very helpful to me !!! thanks :) I

[ceph-users] v0.61.2 'ceph df' can't use

Hi all, I upgrade Ceph to the v0.62, but I find the 'ceph df' command can't use... that show 'unrecognized command' , why ? that need other options ? ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-cep

Re: [ceph-users] v0.61.2 'ceph df' can't use

Hi Sage & Joao, Thanks your reply !! after checking, I missed upgrade one package on monitor node therefore ceph df can't use ... I upgrade it and restart mon daemons then 'ceph df ' can be used Thanks all - Kelvin > -Original Message- > From: Sage Weil [mailto:s...@inktank.com] > Sen