aix如何删除pv与vg

由于直接将存储划分的lun删除掉，忘记拆分vg与pv，现在进行删除vg和pv都报错。

信息如下：

db11#[/]lspv

hdisk8          00c40d950ffee695                    backup_vg       active

db11#[/]lsvg

backup_vg

smit删除报错：

Command: failed        stdout: yes           stderr: no

Before command completion, additional instructions may appear below.

0516-062 lqueryvg: Unable to read or write logical volume manager

        record. PV may be permanently corrupted. Run diagnostics

0516-882 reducevg: Unable to reduce volume group.

reducevg也报错，

db11#[/]reducevg -d backup_vg hdisk8

0516-062 lqueryvg: Unable to read or write logical volume manager

        record. PV may be permanently corrupted. Run diagnostics

0516-882 reducevg: Unable to reduce volume group.

errpt也一直报错：

db11#[/]errpt -aj B6267342 |more

---------------------------------------------------------------------------

LABEL:          SC_DISK_ERR2

IDENTIFIER:     B6267342

Date/Time:       Thu Jul 14 17:15:42 GMT+08:00 2016

Sequence Number: 14802

Machine Id:      00C40D954C00

Node Id:         lydb11

Class:           H

Type:            PERM

WPAR:            Global

Resource Name:   hdisk8         

Resource Class:  disk

Resource Type:   2145

Location:        U78A0.001.DNWHFD6-P1-C2-T1-W500507680B213D5A-L5000000000000

VPD:            

        Manufacturer................IBM     

        Machine Type and Model......2145            

        ROS Level and ID............0000

        Device Specific.(Z0)........0000063268181002

        Device Specific.(Z1)........0100204

        Serial Number...............60050764008100783000000000000044

Description

DISK OPERATION ERROR

Probable Causes

DASD DEVICE

Failure Causes

DISK DRIVE

DISK DRIVE ELECTRONICS

        Recommended Actions

        PERFORM PROBLEM DETERMINATION PROCEDURES

Detail Data

有没有其它删除办法。从odm库中删除怎么进行删除，或者其它更好的办法。谢谢各位了！