分布式存储ceph-crushmap基本操作
root@ceph-client:~# ceph osd getcrushmap -o crushmap.map got crush map from osdmap epoch 114
root@ceph-client:~# crushtool -d crushmap.map -o crushmap.txt
root@ceph-client:~# vim crushmap.txt //编辑crushmap文件,修改成期望的crush结构
root@ceph-client:~# crushtool -c crushmap.txt -o crushmap.new
root@ceph-client:~# ceph osd setcrushmap -i crushmap.new set crush map