系统宕机后，无法识别磁阵

# ioscan -fnC disk
Class I H/W Path Driver S/W State H/W Type Description
=======================================================================
disk 2 0/0/1/0.2.0 sdisk CLAIMED DEVICE HP DVD-ROM 305
/dev/dsk/c0t2d0 /dev/rdsk/c0t2d0
disk 0 0/0/1/1.15.0 sdisk CLAIMED DEVICE HP 36.4GST336753LC
/dev/dsk/c1t15d0 /dev/rdsk/c1t15d0
disk 1 0/0/2/1.15.0 sdisk CLAIMED DEVICE HP 36.4GST336753LC
/dev/dsk/c3t15d0 /dev/rdsk/c3t15d0
disk 3 0/4/0/0.8.0.255.0.0.0 sdisk CLAIMED DEVICE HP 36.4GST336753FC
/dev/dsk/c4t0d0 /dev/rdsk/c4t0d0
disk 4 0/4/0/0.8.0.255.0.1.0 sdisk CLAIMED DEVICE HP 36.4GST336752FC
/dev/dsk/c4t1d0 /dev/rdsk/c4t1d0
disk 5 0/4/0/0.8.0.255.0.2.0 sdisk CLAIMED DEVICE HP 36.4GST336752FC
/dev/dsk/c4t2d0 /dev/rdsk/c4t2d0
disk 6 0/4/0/0.8.0.255.0.3.0 sdisk CLAIMED DEVICE HP 36.4GST336752FC
/dev/dsk/c4t3d0 /dev/rdsk/c4t3d0
disk 7 0/4/0/0.8.0.255.0.4.0 sdisk CLAIMED DEVICE HP 36.4GST336752FC
/dev/dsk/c4t4d0 /dev/rdsk/c4t4d0
disk 8 0/4/0/0.8.0.255.0.5.0 sdisk CLAIMED DEVICE HP 36.4GST336752FC
/dev/dsk/c4t5d0 /dev/rdsk/c4t5d0
You have mail in /var/mail/root
# diskinfo /dev/rdsk/c4t3d0
SCSI describe of /dev/rdsk/c4t3d0:
vendor: HP 36.4G
product id: ST336752FC
type: direct access
size: 0 Kbytes
bytes per sector: 0
# vgchange -a y -q n /dev/vgsybase
vgchange: Warning: Couldn't attach to the volume group physical volume "/dev/dsk/c4t3d0":
Device busy
vgchange: Device busy
vgchange: Activation mode requested for the volume group "/dev/vgsybase" conflicts with configured mode.
vgchange: Warning: couldn't query physical volume "/dev/dsk/c4t3d0":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query physical volume "/dev/dsk/c4t4d0":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query all of the physical volumes.
#

The specified path does not correspond to physical volume attached to
this volume group
pvdisplay: Warning: couldn't query all of the physical volumes.
pvdisplay: Couldn't retrieve the names of the physical volumes
belonging to volume group "/dev/vgsybase".
pvdisplay: Cannot display physical volume "/dev/dsk/c4t5d0".
# vgcfgrestore -n /dev/vgsybase /dev/rdsk/c4t0d0
Volume Group configuration has been restored to /dev/rdsk/c4t0d0
# vgcfgrestore -n /dev/vgsybase /dev/rdsk/c4t1d0
Volume Group configuration has been restored to /dev/rdsk/c4t1d0
# vgcfgrestore -n /dev/vgsybase /dev/rdsk/c4t2d0
Volume Group configuration has been restored to /dev/rdsk/c4t2d0
# vgchange -a y /dev/vgsybase
vgchange: Warning: Couldn't attach to the volume group physical volume "/dev/dsk/c4t3d0":
Device busy
vgchange: Device busy
vgchange: Activation mode requested for the volume group "/dev/vgsybase" conflicts with configured mode.
vgchange: Warning: couldn't query physical volume "/dev/dsk/c4t3d0":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query physical volume "/dev/dsk/c4t4d0":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query all of the physical volumes.
# vgchange -a y -q n /dev/vgsybase
vgchange: Warning: Couldn't attach to the volume group physical volume "/dev/dsk/c4t3d0":
Device busy
vgchange: Device busy
vgchange: Activation mode requested for the volume group "/dev/vgsybase" conflicts with configured mode.
vgchange: Warning: couldn't query physical volume "/dev/dsk/c4t3d0":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query physical volume "/dev/dsk/c4t4d0":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query all of the physical volumes.

#cmruncl -n hspcs1 --启动双机软件后，将包停掉，因为包无法启动。

#cmviewcl

#vgdisplay vgsybase

如果vg没有自动激活，继续执行下面命令：

#vgchange -a e -q n vgsybase --执行此命令后，激活巻组，但无法mount 文件系统，发现问题如下：