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Openstack DBBS Trove Introduction

Posted on 2016-03-18 | In openstack |
Trove简介Openstack Trove项目是Openstack开源代码中提供Database As A Service的项目,它的目的是提供一个Database的框架,集成现有常见的关系型数据库、非关系型数据库。 现在Trove项目支持的数据库有:Mysql,Redis,MoogoDB,Cas ...
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Ceph配置rbd client端的log file

Posted on 2015-12-10 | In ceph |
概述openstack cinder通过librbd访问ceph rbd块设备,有时候需要查看rbd client端的log信息,这时候就需要在rbd client端配置ceph.conf文件。 因为我们openstack里的nova是通过libvirt来启动虚拟机的,所以这里需要保证libvirt ...
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Openstack cinder configuration with multi ceph pools

Posted on 2015-11-17 | In openstack |
添加rbd相关配置文件:/opt/etc/cinder/cinder.conf 删除之前cinder中rbd的配置,然后添加如下配置: 1234567891011121314151617# Define the names of the groups for multiple volume ba ...
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Ceph RBD image map rules

Posted on 2015-11-12 | In ceph |
代码定义Ceph版本:Hammer 0.94.5 12345678/* New-style rbd image 'foo' consists of objects * rbd_id.foo - id of image * rbd_header.<id> ...
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Ceph cpu profile

Posted on 2015-11-08 | In ceph |
oprofileceph官网推荐推荐使用oprofile,参考:http://docs.ceph.com/docs/master/dev/cpu-profiler/ 重新编译ceph: 12345678910apt-get install oprofile oprofile-guimake dist ...
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Google perftools usage with ceph

Posted on 2015-10-30 | In tools |
Install123456789apt-get install libtoolgit clone https://github.com/gperftools/gperftools.gitcd gperftools./autogen.sh./configuremakemake checkmake in ...
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ceph mutex lock monitor

Posted on 2015-10-25 | In ceph |
在分析ceph性能的时候,发现OSD处理线程等待PG lock的时间比较长,当时就想能不能像ceph perf counter一样,统计下PG lock上的等待时间?(后来分析代码知道了PG lock互斥的原因:Ceph PGLock and RWState) 虽然最后证明这样的办法不可靠,不方便分 ...
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ceph client rbd cahce配置

Posted on 2015-10-15 | In ceph |
修改ceph.conf文件添加如下内容: 123456789vim /etc/ceph/ceph.conf...[client] rbd cache = true rbd cache size = 268435456 rbd cache max dirty = 134217728 ...
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Ceph osd write op tracker analysis

Posted on 2015-08-06 | In ceph |
简介Ceph OSD op tracker是osd的一个调试手段,通过op tracker可以分析osd的op在各个操作端的时间开销,进而分析出系统的性能瓶颈和需要调优的参数。 我们基于Hammer版本的op tracker添加了几个events,能更细粒度的切分op的各个阶段,下面是我们通过op ...
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Ceph osd request分析

Posted on 2015-06-18 | In ceph |
OSD Message示例分析12345678910111213141516171819202122232425262728293031323334353637osd_op(client.4813.0:510 default.4161.780__shadow__99999.txt_0 [write ...
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