AIX中更改PVID及恢复过程

datavg包含一个pv， hdisk31 ， pvid=00f7903c71cbf453

# lspv | grep datavg
hdisk31         00f7903c71cbf453                    datavg          active

hdisk31的VGDA信息

# lqueryvg -Atp hdisk31
Max LVs:        256
PP Size:        24
Free PPs:       75
LV count:       2
PV count:       1
Total VGDAs:    2
Conc Allowed:   0
MAX PPs per PV: 1016
MAX PVs:        32
Quorum (disk):  1
Quorum (dd):    1
Auto Varyon ?:  1
Conc Autovaryon 0
Varied on Conc: 0
Logical:        00f7903c00004c000000013871cbf4f5.1   loglv00 1
00f7903c00004c000000013871cbf4f5.2   fslv00 1
Physical:       00f7903c71cbf453                2   0
Total PPs:      639
LTG size:       128
HOT SPARE:      0
AUTO SYNC:      0
VG PERMISSION:  0
SNAPSHOT VG:    0
IS_PRIMARY VG:  0
PSNFSTPP:       4352
VARYON MODE:    0
VG Type:        0
Max PPs:        32512
Mirror Pool Str n
Sys Mgt Mode:   0
VG Reserved:    1
PV RESTRICTION: 0
Infinite Retry: 2

查看hdisk31上拥有的LV

# lspv -l hdisk31
hdisk31:
LV NAME               LPs     PPs     DISTRIBUTION          MOUNT POINT
loglv00               1       1       00..01..00..00..00    N/A
fslv00                563     563     128..127..127..128..53 /mnt/m

卸载文件系统

# unmount /mnt/m

把datavg信息从ODM中删除

# varyoffvg datavg
# exportvg datavg
#

修改PVID

# chdev -l hdisk31 -a pv=clear
hdisk31 changed

查看hdisk31的pvid已经为null

# lspv | grep hdisk31
hdisk31         none                                None

尝试import datavg

# importvg -y datavg hdisk31
0516-1939 : PV identifier not found in VGDA.
0516-780 importvg: Unable to import volume group from hdisk31.

创建逻辑卷名对应文件

# vi lvname
# cat lvname
loglv00:loglv00
fslv00:fslv00

重新创建卷组

# recreatevg -y datavg -l lvname hdisk31
datavg

recreate后，所有在hdisk31上的fs都挂在了/fs/....下，比如原来挂在/mnt/m下的现在挂在了/fs/mnt/m下，

# lsfs
Name            Nodename   Mount Pt               VFS   Size    Options    Auto Accounting
/dev/hd4        --         /                      jfs2  524288  rw         yes  no
/dev/hd1        --         /home                  jfs2  20971520 rw         yes  no
/dev/hd2        --         /usr                   jfs2  10485760 rw         yes  no
/dev/hd9var     --         /var                   jfs2  2097152 rw         yes  no
/dev/hd3        --         /tmp                   jfs2  9961472 rw         yes  no
/dev/hd11admin  --         /admin                 jfs2  524288  rw         yes  no
/proc           --         /proc                  procfs --      rw         yes  no
/dev/hd10opt    --         /opt                   jfs2  2621440 rw         yes  no
/dev/livedump   --         /var/adm/ras/livedump  jfs2  524288  rw         yes  no
/dev/VMLibrary  --         /var/vio/VMLibrary     jfs2  524288  rw         yes  no
/dev/fslv00     --         /fs/mnt/m              jfs2  18448384 rw         no   no

修改/etc/filesystems

from:
/fs/mnt/m:
dev             = /dev/fslv00
vfs             = jfs2
log             = /dev/loglv00
mount           = false
check           = false
options         = rw
account         = false
to:
/mnt/m:
dev             = /dev/fslv00
vfs             = jfs2
log             = /dev/loglv00
mount           = false
check           = false
options         = rw
account         = false

然后用smit chlv把fslv00的logical volume lable改为/mnt/m
再次查看

# lsfs
Name            Nodename   Mount Pt               VFS   Size    Options    Auto Accounting
/dev/hd4        --         /                      jfs2  524288  rw         yes  no
/dev/hd1        --         /home                  jfs2  20971520 rw         yes  no
/dev/hd2        --         /usr                   jfs2  10485760 rw         yes  no
/dev/hd9var     --         /var                   jfs2  2097152 rw         yes  no
/dev/hd3        --         /tmp                   jfs2  9961472 rw         yes  no
/dev/hd11admin  --         /admin                 jfs2  524288  rw         yes  no
/proc           --         /proc                  procfs --      rw         yes  no
/dev/hd10opt    --         /opt                   jfs2  2621440 rw         yes  no
/dev/livedump   --         /var/adm/ras/livedump  jfs2  524288  rw         yes  no
/dev/VMLibrary  --         /var/vio/VMLibrary     jfs2  524288  rw         yes  no
/dev/fslv00     --         /mnt/m                 jfs2  18448384 rw         no   no

挂在文件系统

# mount /mnt/m
# ls
AIXfp                       VIOS2.2.1.4fp25             storagecontrol4.2.1.1.tar   systemdirector0049
SysDir6_3_Server_AIX_a.tar  software                    storagecontrol4.2.2.95      testfile
#