FAQ

無法新增 PV 
 
 Device /dev/sdj not found (or ignored by filtering). 
 
 Solution: 可能該磁碟有包含其他磁區 
 # fdisk -l /dev/sdj

WARNING: GPT (GUID Partition Table) detected on '/dev/sdj'! The util fdisk doesn't support GPT. Use GNU Parted.

Disk /dev/sdj: 3848.3 GB, 3848290697216 bytes
255 heads, 63 sectors/track, 467861 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

 Device Boot Start End Blocks Id System
/dev/sdj1 1 267350 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary. 
 移除這磁碟裡的所有磁區後再試一次。 
 移除已損壞的 PV 
 無法移除已經損壞 PV 的 VG 與 LV 
 
 有一個 PV - /dev/sdc 發生損毀，所屬 VG 與 LV 要移除時遇到錯誤： 
     Couldn't find device with uuid APgmaN-yCZG-WfQS-L5zm-vd6g-oEJc-WjzNrT.     Can't remove locked LV isths_DMS 
       Couldn't find device with uuid APgmaN-yCZG-WfQS-L5zm-vd6g-oEJc-WjzNrT.       WARNING: Partial LV isths_home needs to be repaired or removed.       WARNING: Partial LV isths_DMS needs to be repaired or removed.       WARNING: Partial LV pvmove0 needs to be repaired or removed.       There are still partial LVs in VG vg_db.       To remove them unconditionally use: vgreduce --removemissing --force.       Proceeding to remove empty missing PVs. 
 
 Solution: VG Name: vg_db 
 # vgcfgbackup vg_db
 Couldn't find device with uuid APgmaN-yCZG-WfQS-L5zm-vd6g-oEJc-WjzNrT.
 Volume group "vg_db" successfully backed up. 
 /etc/lvm/backup/vg_db: 
 ...
logical_volumes {
...
...
}
... 
 
 將段落 logical_volumes 整個移除。 
 
 執行 vgcfgrestore 
 # vgcfgrestore vg_db
 Restored volume group vg_db 
 重新掃描再重新執行移除 LV 與 VG 
 pvs
vgs
lvs
vgremove vg_db 
 USB 掛載包含有 LVM 的硬碟，出現錯誤訊息 
 
 # mount -t ext3 /dev/VolGroup00/LogVol00 /mnt/lvm00     mount: wrong fs type, bad option, bad superblock on /dev/mapper/VolGroup00-LogVol00,            missing codepage or helper program, or other error            In some cases useful info is found in syslog - try            dmesg | tail  or so 
 
 Solution: 
 vgchange -an VolGroup00
vgchange -ay VolGroup00
mount -t ext3 /dev/VolGroup00/LogVol00 /mnt/lvm00 
 無法新增 LV 
 系統剛安裝完，執行 pvdisplay -C 出現錯誤，並且無法新增 LV 
 
 Couldn't find device with uuid ZrneWS-8KHd-UiXV-rQ4q-YU0o-r9Ga-0ZVBPW 
 
 Solution: 這個硬碟可能曾經做過 LVM 格式化，這些是之前遺留的裝置名稱，要清除這些不存在的舊設定。 
 # vgreduce -removemissing <vg-name> 
 
 TIPs： 
     要查出這些不存在的 device 的所屬 VG，可以執行 pvdisplay 。 
 
 建立 GPT 磁區 
 With parted 
 # parted /dev/vdb
GNU Parted 3.4
Using /dev/vdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) mklabel GPT 
(parted) mkpart primary 2048s 100% 
(parted) q 
Information: You may need to update /etc/fstab.