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09.28.2007 at 10:07AM PDT, ID: 22859955 | Points: 500
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Can not remove second hard drive in Unix system!!!

Asked by rongvn85 in Unix Setup, Hard Drives & Storage, Computer Hard Drives

Tags: open, volume, remove

Hi everyone,
My server is using Centos 4.5. I use 2 hard drive,one for main files and one for backup purpose. I mounted second hard drive as /backup. Now it is failed to i need to remove it. But seem when I remove the second hard drive, system fail to boot, below is error message

ERROR: /bin/lvm exited abnormally!(pid 562)
Activating logical volumes
Couldn't find device with uuid 'YSOJQS.......
Couldn't find all physical volumes for volume group VolGroup00

Volume group "VolGroup00" not found
ERROR: /bin/lvm exited abnormally!(pid 563)
Creating root device
Mounting root filesystem
moung: error 6 mouting ext3
mount: error 2 mouting none
Switching to new root
switchroot: mount failed: 22
Umount /initrd/dev failed: 22
Kernel panic - not syncing: Attempted to kill init!

Seem that some system files are on the second drive.
Here is the result of fdisk -l

Disk /dev/sda: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 1318 10482412+ 83 Linux
/dev/sda3 1319 2232 7341705 83 Linux
/dev/sda4 2233 30401 226267492+ 5 Extended
/dev/sda5 2233 2493 2096451 83 Linux
/dev/sda6 2494 30401 224170978+ 8e Linux LVM

Disk /dev/sdb: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sdb1 * 1 30099 241770186 83 Linux
/dev/sdb2 30100 30401 2425815 8e Linux LVM

Here is the result of pvdisplay /dev/sdb2
--- Physical volume ---
PV Name /dev/sdb2
VG Name VolGroup00
PV Size 2.31 GB / not usable 983.00 KB
Allocatable yes
PE Size (KByte) 32768
Total PE 74
Free PE 3
Allocated PE 71
PV UUID YJ0JQs-fwpf-FGbn-v2xF-01Xj-rR9m-AU7eVG

When i run vgreduce VolGroup00 /dev/sdb2,i got
Physical volume "/dev/sdb2" still in use

I run vgchange -a n VolGroup00
then got
Can't deactivate volume group "VolGroup00" with 2 open logical volume(s)

[root@vietnam1 /]# pvremove /dev/sdb2
Can't pvremove physical volume "/dev/sdb2" of volume group "VolGroup00" withou t -ff

Please help me on this issue.



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[+][-]09.28.2007 at 02:10PM PDT, ID: 19981804

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