I will try them and report lately. Thanks. On 31 July 2012 07:41, Tommi Virtanen <tv@xxxxxxxxxxx> wrote: > On Mon, Jul 30, 2012 at 4:24 PM, 袁冬 <yuandong1222@xxxxxxxxx> wrote: >>> - filesystem used for OSDs >> Both instance use btrfs file system. Is there some difference of btrfs >> between CentOS and Ubuntu? >> >>> - kernel version >> CentOS Kernel Version: 3.4.0 >> Ubuntu Kernel Version: 3.2.0 > > There's five months of active development between those two kernels, > including plenty of btrfs work: > http://kernelnewbies.org/Linux_3.4#head-8ad9e3d4ad73e1da565f52c2abbe9acf7efdc614 > > I'd recommend building the latest & greatest kernel, same version, on > both your ubuntu and centos servers. That'll make the comparison more > even. > > Additionally, you might want to try xfs. -- 袁冬 Tel:13573888215 Email:yuandong1222@xxxxxxxxx QQ:10200230 MSN:yuandong1222@xxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html