大楼停电,以为戴尔服务器稳如老狗,没去手动关机,启动后 少了个逻辑券 /dev/VolGroup/home
结果服务器太老 centos6.5
yum install lvm2 安装不成功
相关命令 pvcreate lvdisplay都提示command not found
决定手动离线安装lvm2
对 没错 就是上次离线安装docker的服务器….
centos6.5 离线安装docker1.7.1(带离线安装包下载)
里面有包含lvm2离线包
但是安装lvm2-2.02.143-12.el6.x86_64.rpm会提示device-mapper-persistent-data need by >=0.6.2
到网站https://rpm.pbone.net/resultsb_dist_79_size_473864_name_device-mapper-persistent-data-0.6.2-0.2.rc7.el6.x86_64.rpm.html
下载
device-mapper-persistent-data-0.6.2-0.2.rc7.el6.x86_64.rpm
然后安装

rpm -ivh device-mapper-persistent-data-0.6.2-0.2.rc7.el6.x86_64.rpm

提示

warning: group mockbuild does not exist - using root
warning: user mockbuild does not exist - using root
warning: group mockbuild does not exist - using root

解决方案

sudo useradd -s /sbin/nologin mockbuild
rpm -ivh device-mapper-persistent-data-0.6.2-0.2.rc7.el6.x86_64.rpm
rpm -ivh lvm2-2.02.143-12.el6.x86_64.rpm

然后安装成功LVM2
然后网上找的教程类似pvcreate,没用

pvcreate /dev/sda2 --uuid "3Nt1Ra-WKdR-NjB0-2TD9-LLdC-5Tl6-CZp1m6"  --restorefile /etc/lvm/backup/VolGroup

提示
Can’t find uuid in backup file /etc/lvm/backup/VolGroup什么的
奇怪的是lvdisplay有返回

[root@localhost archive]# lvdisplay
  --- Logical volume ---
  LV Path                /dev/VolGroup/lv_root
  LV Name                lv_root
  VG Name                VolGroup
  LV UUID                og7GfV-GX0H-Cwba-xd5Z-cxlp-fTXN-FzkdJh
  LV Write Access        read/write
  LV Creation host, time localhost.localdomain, 2018-10-08 19:47:12 +0800
  LV Status              available
  # open                 1
  LV Size                850.00 GiB
  Current LE             217600
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0

  --- Logical volume ---
  LV Path                /dev/VolGroup/lv_swap
  LV Name                lv_swap
  VG Name                VolGroup
  LV UUID                ccHcNf-78UM-GKS2-Xp8s-Zrc2-A2rB-40YeSO
  LV Write Access        read/write
  LV Creation host, time localhost.localdomain, 2018-10-08 19:51:24 +0800
  LV Status              available
  # open                 1
  LV Size                15.66 GiB
  Current LE             4010
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:1

  --- Logical volume ---
  LV Path                /dev/VolGroup/home
  LV Name                home
  VG Name                VolGroup
  LV UUID                3Nt1Ra-WKdR-NjB0-2TD9-LLdC-5Tl6-CZp1m6
  LV Write Access        read/write
  LV Creation host, time localhost.localdomain, 2019-01-21 15:13:44 +0800
  LV Status              NOT available
  # open                 1
  LV Size                2.44 TiB
  Current LE             640000
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto

我都没注意看到 LV Status NOT available 这一栏
最后百度搜索 lvdisplay有 但是无法挂载
最后网上找到一个教程
https://dude6.com/article/13015.html
一个命令解决

vgchange -ay
mount -a

马德吓死我了 一天担惊受怕……2.2T的公司数据

[root@localhost mapper]# df -h
Filesystem            Size  Used Avail Use% Mounted on
rootfs                837G  566G  229G  72% /
devtmpfs               16G  180K   16G   1% /dev
tmpfs                  16G  412K   16G   1% /dev/shm
/dev/mapper/VolGroup-lv_root
                      837G  566G  229G  72% /
/dev/sda1             477M   67M  385M  15% /boot
/dev/mapper/VolGroup-home
                      2.5T  2.2T  250G  91% /media

以后供起来,大楼说要停电 ,第一个给你关机
太可怕了
运维要有良好习惯,这是我自己不警惕作出来的…….同行共勉