LVM分区丢失导致硬盘为只读 现像：本来如果tomcat程序down了以后会自动重启，但一晚上报警，登上服务器后发现硬盘为只读，而且登陆上以后不能reboot重启，查看系统日志如下   tail  /var/log/message Nov 24 08:55:22 localhost smartd[3029]: Device: /dev/sdb, is SMART capable. Adding to "monitor" list. Nov 24 08:55:23 localhost smartd[3029]: Device: /dev/sdb, 1021 Currently unreadable (pending) sectors Nov 24 08:55:24 localhost smartd[3029]: Device: /dev/sdb, 1021 Offline uncorrectable sectors Nov 24 09:25:24 localhost smartd[3047]: Device: /dev/sdb, 1133 Currently unreadable (pending) sectors Nov 24 09:25:24 localhost smartd[3047]: Device: /dev/sdb, 1133 Offline uncorrectable sectors Nov 24 09:55:25 localhost smartd[3047]: Device: /dev/sdb, 1133 Currently unreadable (pending) sectors Nov 24 09:55:25 localhost smartd[3047]: Device: /dev/sdb, 1133 Offline uncorrectable sectors Nov 24 10:25:24 localhost smartd[3047]: Device: /dev/sdb, 1133 Currently unreadable (pending) sectors Nov 24 10:25:24 localhost smartd[3047]: Device: /dev/sdb, 1133 Offline uncorrectable sectors Nov 24 10:55:24 localhost smartd[3047]: Device: /dev/sdb, 1133 Currently unreadable (pending) sectors Nov 24 10:55:24 localhost smartd[3047]: Device: /dev/sdb, 1133 Offline uncorrectable sectors Nov 24 11:25:24 localhost smartd[3047]: Device: /dev/sdb, 1133 Currently unreadable (pending) sectors   查看硬盘为LVM管理， 通过pvdiaplay, vgdisplay,lvdisplay发现有重Duplicate VolGroup00 ,看来是LVM坏了，修复如下：   1、pvs [root@localhost yuanbor]# /sbin/pvs WARNING: Duplicate VG name VolGroup00: Existing tWwhxK-0M8r-sqhQ-VW7m-0BYv-BPkO-pgBRM8 (created here) takes precedence over 7kU450-LaPn-afEa-iWGw-xiqD-Tmwe-ohpL3f PV VG Fmt Attr PSize PFree /dev/sda2 VolGroup00 lvm2 a- 33.97G 32.00M /dev/sdb3 VolGroup00 lvm2 a- 36.78G 32.00M 这个比较惨，两个VG名字重了，下面将第二个VG修改名字。 2、vgrename [root@localhost yuanbor]#/sbin/vgrename 7kU450-LaPn-afEa-iWGw-xiqD-Tmwe-ohpL3f /dev/VolGroup01 WARNING: Duplicate VG name VolGroup00: Existing tWwhxK-0M8r-sqhQ-VW7m-0BYv-BPkO-pgBRM8 (created here) takes precedence over 7kU450-LaPn-afEa-iWGw-xiqD-Tmwe-ohpL3f Volume group "VolGroup00" successfully renamed to "VolGroup01" [root@localhost yuanbor]# /sbin/pvs PV VG Fmt Attr PSize PFree /dev/sda2 VolGroup00 lvm2 a- 33.97G 32.00M /dev/sdb3 VolGroup01 lvm2 a- 36.78G 32.00M 3、lvscan [root@localhost sdb3]# /sbin/lvscan inactive '/dev/VolGroup01/LogVol00' [34.81 GB] inherit inactive '/dev/VolGroup01/LogVol01' [1.94 GB] inherit ACTIVE '/dev/VolGroup00/LogVol00' [32.00 GB] inherit ACTIVE '/dev/VolGroup00/LogVol01' [1.94 GB] inherit 可以看到新修改的VolGroup01是inactive状态。 4、vgchange [root@localhost sdb3]# /sbin/vgchange -ay /dev/VolGroup01 2 logical volume(s) in volume group "VolGroup01" now active [root@localhost mnt]# /sbin/lvscan ACTIVE '/dev/VolGroup01/LogVol00' [34.81 GB] inherit ACTIVE '/dev/VolGroup01/LogVol01' [1.94 GB] inherit ACTIVE '/dev/VolGroup00/LogVol00' [32.00 GB] inherit ACTIVE '/dev/VolGroup00/LogVol01' [1.94 GB] inherit 好了，现在可以挂载了。 5、mount [root@localhost mnt]# mount /dev/VolGroup01/LogVol00 /mnt/sdb3   查看是否有raid卡 Lspci  | grep –I raik