Use LVM thin LV on cache LV

Post on: Category: 学习笔记Tag: Linux,LVM 2 Comments

As of the LVM release 2.02.106, LVM supports the use of fast block devices (such as SSD drives) as write-back or write-though caches for larger slower block devices.
The cache logical volume type uses a small and fast LV to improve the performance of a large and slow LV. It's based on dm-cache(the kernel driver), so you can only use it on CentOS7.1/Ubuntu 15.04 or later.
For this article, I will assume you used Ubuntu 15.04.



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Ubuntu不启动XServer

Post on: Category: 学习笔记Tag: Linux 13 Comments

修改/etc/init/gdm.conf, 在第12行的start on 加上条件 "and runlevel [35]", 保存即可,需要GUI时,直接执行 init 3 切换runlevel.


PS:环境为Ubuntu 10.04 LTS

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