IBM服务器更换rootvg故障磁盘操作指南

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1 Rootvg 做镜像
1.1 Rootvg 做镜像要求
在安装完操作系统，配完应用后，我们一般要给 rootvg 做镜像，做 rootvg 镜像的硬盘必须和 rootvg 的硬盘空间大小相同，转速相同的同一型号内置 SCSI 硬盘。可通过下面这些命令来确认：
lsdev -Cc disk 确定主机中有几块硬盘，有几块内置硬盘
# lsdev -Cc disk
[IBMP740-1:root:/]#lsdev -Cc disk
hdisk0 Available 00-00-00 SAS Disk Drive
hdisk1 Available 00-00-00 SAS Disk Drive
hdisk2 Defined 07-00-02 EMC CLARiiON FCP LUNZ Disk
hdisk3 Defined 07-00-02 EMC CLARiiON FCP LUNZ Disk
hdisk4 Defined 05-00-02 EMC CLARiiON FCP LUNZ Disk
hdisk5 Defined 05-00-02 EMC CLARiiON FCP LUNZ Disk
hdisk6 Defined 07-00-02 EMC CLARiiON FCP RAID 5 Disk
hdisk7 Defined 07-00-02 EMC CLARiiON FCP RAID 5 Disk
hdisk8 Defined 07-00-02 EMC CLARiiON FCP RAID 5 Disk
hdisk9 Defined 07-00-02 EMC CLARiiON FCP RAID 5 Disk
hdisk10 Available 05-00-02 EMC CLARiiON FCP RAID 5 Disk
hdisk11 Available 05-00-02 EMC CLARiiON FCP RAID 5 Disk
hdisk12 Available 05-00-02 EMC CLARiiON FCP RAID 5 Disk
hdisk13 Available 05-00-02 EMC CLARiiON FCP RAID 5 Disk
hdisk14 Defined 07-00-02 EMC CLARiiON FCP RAID 5 Disk
hdisk15 Defined 07-00-02 EMC CLARiiON FCP RAID 5 Disk
hdisk16 Available 05-00-02 EMC CLARiiON FCP RAID 5 Disk
hdisk17 Available 05-00-02 EMC CLARiiON FCP RAID 5 Disk
hdisk18 Available 07-00-02 EMC CLARiiON FCP RAID 5 Disk
hdisk19 Available 07-00-02 EMC CLARiiON FCP RAID 5 Disk
hdisk20 Available 07-00-02 EMC CLARiiON FCP RAID 5 Disk
hdisk21 Available 07-00-02 EMC CLARiiON FCP RAID 5 Disk
hdisk22 Available 07-00-02 EMC CLARiiON FCP RAID 5 Disk
hdisk23 Available 07-00-02 EMC CLARiiON FCP RAID 5 Disk
hdiskpower0 Available 05-00-02 PowerPath Device
hdiskpower1 Available 07-00-02 PowerPath Device
hdiskpower2 Available 05-00-02 PowerPath Device

lspv 确定主机中那块内置硬盘没有被 VG 使用
# lspv
hdisk0 0057908c7251c07a rootvg
hdisk1 0057908cea9403a2 None
hdisk2 005d03fc9859db6c datavg
[IBMP740-1:root:/]# lspv
hdisk0 00f7ac3dfb20ed5a None
hdisk1 00f7ac3d60694e5e rootvg active
hdisk10 none None
hdisk11 none None
hdisk12 none None
hdisk13 none None
hdisk16 none None
hdisk17 none None
hdisk18 none None
hdisk19 none None
hdisk20 none None
hdisk21 none None
hdisk22 none None
hdisk23 none None

lsattr -El 确定 hdisk0 与 hdisk1 硬盘的大小一致
[IBMP740-1:root:/]#lsattr -El hdisk0
PCM PCM/friend/scsiscsd Path Control Module False
algorithm fail_over Algorithm True
dist_err_pcnt 0 Distributed Error Percentage True
dist_tw_width 50 Distributed Error Sample Time True
hcheck_interval 0 Health Check Interval True
hcheck_mode nonactive Health Check Mode True
max_coalesce 0x10000 Maximum Coalesce Size True
max_transfer 0x100000 Maximum TRANSFER Size True
pvid 00f7ac3dfb20ed5a0000000000000000 Physical volume identifier False
queue_depth 16 Queue DEPTH True
reserve_policy no_reserve Reserve Policy True
size_in_mb 300000 Size in Megabytes False
unique_id 2A1135000C50053CA70070BST9300653SS03IBMsas Unique device identifier False
ww_id 5000c50053ca7007 World Wide Identifier False
[IBMP740-1:root:/]#lsattr -El hdisk1
PCM PCM/friend/scsiscsd Path Control Module False
algorithm fail_over Algorithm True
dist_err_pcnt 0 Distributed Error Percentage True
dist_tw_width 50 Distributed Error Sample Time True
hcheck_interval 0 Health Check Interval True
hcheck_mode nonactive Health Check Mode True
max_coalesce 0x10000 Maximum Coalesce Size True
max_transfer 0x100000 Maximum TRANSFER Size True
pvid 00f7ac3d60694e5e0000000000000000 Physical volume identifier False
queue_depth 16 Queue DEPTH True
reserve_policy no_reserve Reserve Policy True
size_in_mb 300000 Size in Megabytes False
unique_id 2A1135000C500594B60570BST9300653SS03IBMsas Unique device identifier False
ww_id 5000c500594b6057 World Wide Identifier False
[IBMP740-1:root:/]#lscfg -vpl hdisk0

lscfg -vpl 确认硬盘的 Part number 或 FRU Number 号是否一样，如一样说明硬盘型号一样。
[IBMP740-1:root:/]#lscfg -vpl hdisk0
hdisk0 U78AA.001.WZSHLUK-P2-D1 SAS Disk Drive (300000 MB)

Manufacturer…………….IBM
Machine Type and Model……ST9300653SS
FRU Number………………74Y6496
ROS Level and ID…………37343044
Serial Number……………6XN12EQS
EC Level………………..N23780
Part Number……………..74Y6486
Device Specific.(Z0)……..000006329F001002
Device Specific.(Z1)……..0301740D
Device Specific.(Z2)……..0021
Device Specific.(Z3)……..12136
Device Specific.(Z4)……..
Device Specific.(Z5)……..22
Device Specific.(Z6)……..N23780
Hardware Location Code……U78AA.001.WZSHLUK-P2-D1

PLATFORM SPECIFIC

Name: disk
Node: disk
Device Type: block
[IBMP740-1:root:/]#lscfg -vpl hdisk1
hdisk1 U78AA.001.WZSHLUK-P2-D2 SAS Disk Drive (300000 MB)

Manufacturer…………….IBM
Machine Type and Model……ST9300653SS
FRU Number………………74Y6496
ROS Level and ID…………37343044
Serial Number……………6XN1F0V1
EC Level………………..N23780
Part Number……………..74Y6486
Device Specific.(Z0)……..000006329F001002
Device Specific.(Z1)……..0301740D
Device Specific.(Z2)……..0021
Device Specific.(Z3)……..12217
Device Specific.(Z4)……..
Device Specific.(Z5)……..22
Device Specific.(Z6)……..N23780
Hardware Location Code……U78AA.001.WZSHLUK-P2-D2

PLATFORM SPECIFIC

Name: disk
Node: disk
Device Type: block 由上可知，hdisk0 与 hdisk1 型号、大小一致，可以做 rootvg 镜像。

# 一般基本上除了 haview，netwiew (Tivoli)的包以外，所有的 hacmp 的包都要安装。
1.2 配制 rootvg 镜像
首先将 hdisk1 硬盘加入到 rootvg 中
# extendvg rootvg hdisk1
0516-014 linstallpv: The physical volume appears to belong to another
volume group.
005d027c00004c00
0516-631 extendvg: Warning, all data belonging to physical
volume hdisk1 will be destroyed.
extendvg: Do you wish to continue? y(es) n(o)? y
# lspv
hdisk0 0057908c7251c07a rootvg
hdisk1 0057908cea9403a2 rootvg
hdisk2 005d03fc9859db6c datavg

给 rootvg 做镜像
# mirrorvg rootvg hdisk1
0516-1124 mirrorvg: Quorum requirement turned off, reboot system for this
to take effect for rootvg.
0516-1126 mirrorvg: rootvg successfully mirrored, user should perform
bosboot of system to initialize boot records. Then, user must modify
bootlist to include: hdisk0 hdisk1.

给 hdisk0、hdisk1 分别做引导分区
# bosboot -ad hdisk0
bosboot: Boot image is 15092 512 byte blocks.
# bosboot -ad hdisk1
bosboot: Boot image is 15092 512 byte blocks.

设定系统的引导顺序为 hdisk0、hdisk1
# bootlist -m normal hdisk0 hdisk1
# bootlist -m normal -o
hdisk0 blv=hd5 pathid=0
hdisk1 blv=hd5 pathid=0

设定 Quorum 为 Disable.，这样保证了一旦硬盘坏了一块，rootvg 还是能正常启来。
# chvg -Qn rootvg
0516-1804 chvg: The quorum change takes effect immediately.

执行 lsvg 命令确认 rootvg 已做镜像，可看到除了 lg_dumplv 之外所有其它 LPs 和 PPs 的对应关系为 1 对 2 的关系。
# lsvg -l rootvg
rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
hd5 boot 1 2 2 closed/syncd N/A
hd6 paging 33 66 2 open/syncd N/A
hd8 jfs2log 1 2 2 open/syncd N/A
hd4 jfs2 40 80 2 open/syncd /
hd2 jfs2 10 20 2 open/syncd /usr
hd9var jfs2 10 20 2 open/syncd /var
hd3 jfs2 20 40 2 open/syncd /tmp
hd1 jfs2 10 20 2 open/syncd /home
hd10opt jfs2 196 392 2 open/syncd /opt
hd11admin jfs2 10 20 2 open/syncd /admin
fwdump jfs2 3 6 2 open/syncd /var/adm/ras/platform
lg_dumplv sysdump 16 16 1 open/syncd N/A
livedump jfs2 1 2 2 open/syncd /var/adm/ras/livedump
fslv00 jfs2 40 80 2 closed/syncd /u01

2 更换 rootvg 中的故障盘
这里假设 hdisk0 硬盘故障，需要更换。
2.1 确定 hdisk0 硬盘故障
首先执行 errpt 命令查看错误日志, 如果 hdisk0 损坏的话，会有很多 hdisk0 的报错。
# errpt -d H
IDENTIFIER TIMESTAMP T C RESOURCE_NAME DESCRIPTION
12296806 0312162815 T H sissas0 SAS ERROR
12296806 0312162715 T H sissas0 SAS ERROR
12296806 0311235615 T H sissas0 SAS ERROR
12296806 0311235515 T H sissas0 SAS ERROR
12296806 0310235615 T H sissas0 SAS ERROR
12296806 0310235515 T H sissas0 SAS ERROR
12296806 0309235615 T H sissas0 SAS ERROR
12296806 0309235515 T H sissas0 SAS ERROR
12296806 0308235615 T H sissas0 SAS ERROR
12296806 0308235515 T H sissas0 SAS ERROR
12296806 0307235615 T H sissas0 SAS ERROR
12296806 0307235515 T H sissas0 SAS ERROR
12296806 0306235615 T H sissas0 SAS ERROR
12296806 0306235515 T H sissas0 SAS ERROR
12296806 0305235615 T H sissas0 SAS ERROR
12296806 0305235515 T H sissas0 SAS ERROR
12296806 0304235615 T H sissas0 SAS ERROR
12296806 0304235515 T H sissas0 SAS ERROR
E86653C3 0304054615 P H LVDD I/O ERROR DETECTED BY LVM
E86653C3 0304054615 P H LVDD I/O ERROR DETECTED BY LVM
C62E1EB7 0304054615 P H hdisk0 DISK OPERATION ERROR
12296806 0304054615 T H sissas0 SAS ERROR
E86653C3 0304054615 P H LVDD I/O ERROR DETECTED BY LVM
E86653C3 0304054615 P H LVDD I/O ERROR DETECTED BY LVM
C62E1EB7 0304054615 P H hdisk0 DISK OPERATION ERROR
C62E1EB7 0304054615 P H hdisk0 DISK OPERATION ERROR
12296806 0304054615 T H sissas0 SAS ERROR
12296806 0304054615 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054515 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR
12296806 0304054415 T H sissas0 SAS ERROR

执行 lsvg 确认镜像丢失，可看到 LPs 和 PPs 的对应关系变为 11 对应。
# lsvg -l rootvg
rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
hd5 boot 1 1 1 closed/syncd N/A
hd6 paging 33 33 1 open/syncd N/A
hd8 jfs2log 1 1 1 open/syncd N/A
hd4 jfs2 40 40 1 open/syncd /
hd2 jfs2 10 10 1 open/syncd /usr
hd9var jfs2 10 10 1 open/syncd /var
hd3 jfs2 20 20 1 open/syncd /tmp
hd1 jfs2 10 10 1 open/syncd /home
hd10opt jfs2 196 196 1 open/syncd /opt
hd11admin jfs2 10 10 1 open/syncd /admin
fwdump jfs2 3 3 1 open/syncd /var/adm/ras/platform
lg_dumplv sysdump 8 8 1 open/syncd N/A
livedump jfs2 1 1 1 open/syncd /var/adm/ras/livedump
fslv00 jfs2 40 40 1 closed/syncd /u01

执行 lspv -l hdisk0 命令会报错，确认 hdisk0 硬盘故障。

2.2 更换 hdisk0 硬盘
首先将 hdisk0 硬盘从 rootvg 中 unmirror
# unmirrorvg rootvg hdisk0
0516-1246 rmlvcopy: If hd5 is the boot logical volume, please run ‘chpv -c ‘
as root user to clear the boot record and avoid a potential boot
off an old boot image that may reside on the disk from which this
logical volume is moved/removed.
0516-1132 unmirrorvg: Quorum requirement turned on, reboot system for this
to take effect for rootvg.
0516-1144 unmirrorvg: rootvg successfully unmirrored, user should perform
bosboot of system to reinitialize boot records. Then, user must modify
bootlist to just include: hdisk1.

执行 chpv -c hdisk0 命令清除掉 boot 记录
# chpv -c hdisk0
0301-108 mkboot: Unable to read file blocks. Return code: -1
0516-1248 chpv: mkboot failure

# reducevg rootvg hdisk0
0516-016 ldeletepv: Cannot delete physical volume with allocated
partitions. Use either migratepv to move the partitions or
reducevg with the -d option to delete the partitions.
0516-884 reducevg: Unable to remove physical volume hdisk0.

这是因为 lg_dumplv 在 rootvg 缺省情况下没有做镜像的原因，只创建在 hdisk0 上, 现在要修改主 dump 目录为 null（空目录)
# lslv -l lg_dumplv
lg_dumplv:N/A
PV COPIES IN BAND DISTRIBUTION
hdisk0 008:000:000 100% 000:008:000:000:000

# sysdumpdev -P -p /dev/sysdumpnull
primary /dev/sysdumpnull
secondary /dev/sysdumpnull
copy directory /var/adm/ras
forced copy flag TRUE
always allow dump FALSE
dump compression ON
type of dump traditional

从 rootvg 中删除 hdisk0 硬盘
# reducevg -d rootvg hdisk0
0516-914 rmlv: Warning, all data belonging to logical volume
lg_dumplv on physical volume hdisk0 will be destroyed.
rmlv: Do you wish to continue? y(es) n(o)? yes
rmlv: Logical volume lg_dumplv is removed.

# lsvg -l rootvg
rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
hd5 boot 1 1 1 closed/syncd N/A
hd6 paging 33 33 1 open/syncd N/A
hd8 jfs2log 1 1 1 open/syncd N/A
hd4 jfs2 40 40 1 open/syncd /
hd2 jfs2 10 10 1 open/syncd /usr
hd9var jfs2 10 10 1 open/syncd /var
hd3 jfs2 20 20 1 open/syncd /tmp
hd1 jfs2 10 10 1 open/syncd /home
hd10opt jfs2 196 196 1 open/syncd /opt
hd11admin jfs2 10 10 1 open/syncd /admin
fwdump jfs2 3 3 1 open/syncd /var/adm/ras/platform
livedump jfs2 1 1 1 open/syncd /var/adm/ras/livedump
fslv00 jfs2 40 40 1 closed/syncd /u01

删除 hdisk0 硬盘
# rmdev -dl hdisk0
hdisk0 deleted
# lspv
hdisk1 00f45bd06cef0cfa rootvg active
hdisk2 none None
hdisk3 none None
hdisk4 none None
hdisk5 none None
hdisk6 none None
hdisk7 none None
hdisk8 none None
hdisk9 none None
hdisk10 none None
hdisk11 none None
hdiskpower0 none None
hdiskpower1 none None
hdiskpower2 none None
hdiskpower3 none None
hdiskpower4 none None
hdisk12 none None
hdisk13 none None
hdisk14 none None
hdisk15 none None
hdisk16 none None
hdisk17 none None
hdiskpower5 none None
hdiskpower6 none None
hdiskpower7 none None
hdisk18 none None
hdisk19 none None
hdisk20 none None
hdisk21 none None
hdisk22 none None
hdisk23 none None
hdiskpower8 none None
hdiskpower9 none None
hdiskpower10 none None

2.3 添加新硬盘到 rootvg 中, 并做镜像
拔出 hdisk0 故障硬盘，插入新硬盘。执行以下操作将新硬盘加入到 rootvg 中
# cfgmgr -v
查看磁盘是否有 pvid 如果没有执行 chdev -l hdisk0 -a pv=yes
# lspv
hdisk0 none None
hdisk1 00f45bd06cef0cfa rootvg active
hdisk2 none None
hdisk3 none None
hdisk4 none None
hdisk5 none None
hdisk6 none None
hdisk7 none None
hdisk8 none None
hdisk9 none None
hdisk10 none None
hdisk11 none None
hdiskpower0 none None
hdiskpower1 none None
hdiskpower2 none None
hdiskpower3 none None
hdiskpower4 none None
hdisk12 none None
hdisk13 none None
hdisk14 none None
hdisk15 none None
hdisk16 none None
hdisk17 none None
hdiskpower5 none None
hdiskpower6 none None
hdiskpower7 none None
hdisk18 none None
hdisk19 none None
hdisk20 none None
hdisk21 none None
hdisk22 none None
hdisk23 none None
hdiskpower8 none None
hdiskpower9 none None
hdiskpower10 none None

# chdev -l hdisk0 -a pv=yes
hdisk0 changed
# lspv
hdisk0 00f45bd0101716a0 None
hdisk1 00f45bd06cef0cfa rootvg active
hdisk2 none None
hdisk3 none None
hdisk4 none None
hdisk5 none None
hdisk6 none None
hdisk7 none None
hdisk8 none None
hdisk9 none None
hdisk10 none None
hdisk11 none None
hdiskpower0 none None
hdiskpower1 none None
hdiskpower2 none None
hdiskpower3 none None
hdiskpower4 none None
hdisk12 none None
hdisk13 none None
hdisk14 none None
hdisk15 none None
hdisk16 none None
hdisk17 none None
hdiskpower5 none None
hdiskpower6 none None
hdiskpower7 none None
hdisk18 none None
hdisk19 none None
hdisk20 none None
hdisk21 none None
hdisk22 none None
hdisk23 none None
hdiskpower8 none None
hdiskpower9 none None
hdiskpower10 none None

把 hdisk0 加入到 rootvg
# extendvg rootvg hdisk0
# lspv
hdisk0 00f45bd0101716a0 rootvg active
hdisk1 00f45bd06cef0cfa rootvg active
hdisk2 none None
hdisk3 none None
hdisk4 none None
hdisk5 none None
hdisk6 none None
hdisk7 none None
hdisk8 none None
hdisk9 none None
hdisk10 none None
hdisk11 none None
hdiskpower0 none None
hdiskpower1 none None
hdiskpower2 none None
hdiskpower3 none None
hdiskpower4 none None
hdisk12 none None
hdisk13 none None
hdisk14 none None
hdisk15 none None
hdisk16 none None
hdisk17 none None
hdiskpower5 none None
hdiskpower6 none None
hdiskpower7 none None
hdisk18 none None
hdisk19 none None
hdisk20 none None
hdisk21 none None
hdisk22 none None
hdisk23 none None
hdiskpower8 none None
hdiskpower9 none None
hdiskpower10 none None

做 rootvg 镜像
# mirrorvg rootvg hdisk0
0516-306 getlvodm: Unable to find volume group root in the Device
Configuration Database.
0516-1200 mirrorvg: Failed to mirror the volume group.

创建引导映像
# bosboot -ad hdisk0

bosboot: Boot image is 53276 512 byte blocks.
# bosboot -ad hdisk1

bosboot: Boot image is 53276 512 byte blocks.

改变引导区引导顺序
# bootlist -m normal hdisk0 hdisk1

查看引导顺序
# bootlist -m normal -o
hdisk0 blv=hd5 pathid=0
hdisk1 blv=hd5 pathid=0

# chvg -Qn rootvg
0516-1804 chvg: The quorum change takes effect immediately.

//-Q：确定卷组在丢失其物理卷的限额后，VG 是否保持活动；-n：保持活动，默认为：-y。

重新创建 dump
# mklv -t sysdump -y lg_dumplv rootvg 16 hdisk0
lg_dumplv

修改主 dump device:
# sysdumpdev -Pp /dev/lg_dumplv
primary /dev/lg_dumplv
secondary /dev/sysdumpnull
copy directory /var/adm/ras
forced copy flag TRUE
always allow dump FALSE
dump compression ON
type of dump traditional
# lsvg -l rootvg
rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
hd5 boot 1 2 2 closed/syncd N/A
hd6 paging 33 66 2 open/syncd N/A
hd8 jfs2log 1 2 2 open/syncd N/A
hd4 jfs2 40 80 2 open/syncd /
hd2 jfs2 10 20 2 open/syncd /usr
hd9var jfs2 10 20 2 open/syncd /var
hd3 jfs2 20 40 2 open/syncd /tmp
hd1 jfs2 10 20 2 open/syncd /home
hd10opt jfs2 196 392 2 open/syncd /opt
hd11admin jfs2 10 20 2 open/syncd /admin
fwdump jfs2 3 6 2 open/syncd /var/adm/ras/platform
lg_dumplv sysdump 16 16 1 open/syncd N/A
livedump jfs2 1 2 2 open/syncd /var/adm/ras/livedump
fslv00 jfs2 40 80 2 closed/syncd /u01