在 Ceph 集群中,往往使用 SSD 来作为 Journal(日志)和 Caching(缓存)介质
https://www.linuxidc.com/Linux/2015-10/124526.htm
https://blog.youkuaiyun.com/signmem/article/details/50393286
https://blog.youkuaiyun.com/skdkjzz/article/details/41577261
http://hustcat.github.io/ceph-performance-journal-and-tcmalloc/
https://www.bbsmax.com/A/amd0o4Xm5g/
https://blog.youkuaiyun.com/cybertan/article/details/51131444
ceph存储 ceph集群journal设置
https://blog.youkuaiyun.com/skdkjzz/article/details/41577429
https://blog.youkuaiyun.com/for_tech/article/details/72123223?utm_source=itdadao&utm_medium=referral
Ceph更换Journal盘
https://www.hitsword.org/2018/145.html
http://hustcat.github.io/ceph-performance-journal-and-tcmalloc/