AIX如何做系统LVM镜像

 

2块硬盘互做镜像，对操作系统进行保护

 

1、

# lspv

hdisk0          0006477a94412985                    rootvg          active

hdisk1          0006477ad33d5a59                    None           

 

2、将hdisk1添加到rootvg

# smitty extendvg

                    Add a Physical Volume to a Volume Group

Type or select values in entry fields.

Press Enter AFTER making all desired changes.

                                                        [Entry Fields]

  Force the creation of a volume group?               no                     +

* VOLUME GROUP name                                  [rootvg]                +

* PHYSICAL VOLUME names                              [hdisk1]                +  //要添加的盘hdisk1

 

# lspv                         //hdisk1已加到rootvg中

hdisk0          0006477a94412985                    rootvg          active

hdisk1          0006477ad33d5a59                    rootvg          active

 

# lsvg -l rootvg   //LV还没有成倍数

rootvg:

LV NAME             TYPE       LPs     PPs     PVs  LV STATE      MOUNT POINT

hd5                 boot       1       1       1    closed/syncd  N/A

hd6                 paging     16      16      1    open/syncd    N/A

hd8                 jfslog     1       1       1    open/syncd    N/A

hd4                 jfs        1       1       1    open/syncd    /

hd2                 jfs        42      42      1    open/syncd    /usr

hd9var              jfs        2       2       1    open/syncd    /var

hd3                 jfs        32      32      1    open/syncd    /tmp

hd1                 jfs        1       1       1    open/syncd    /home

hd10opt             jfs        2       2       1    open/syncd    /opt

lv00                jfs        94      94      1    open/syncd    /fix

fslv01              jfs        314     314     1    open/syncd    /oracle

 

3、做镜像

# smitty mirrorvg

                                                        [Entry Fields]

* VOLUME GROUP name                                   rootvg

  Mirror sync mode                                   [Background]      + 选后台模式,

  PHYSICAL VOLUME names                              []          

  Number of COPIES of each logical                    2                      +

    partition

  Keep Quorum Checking On?                            no                     +

  Create Exact LV Mapping?                            no                     +

 

4、查看镜像情况，成2倍

# 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     16      32      2    open/syncd    N/A

hd8                 jfslog     1       2       2    open/syncd    N/A

hd4                 jfs        1       2       2    open/syncd    /

hd2                 jfs        42      84      2    open/stale    /usr

hd9var              jfs        2       4       2    open/stale    /var

hd3                 jfs        32      64      2    open/stale    /tmp

hd1                 jfs        1       2       2    open/stale    /home

hd10opt             jfs        2       4       2    open/stale    /opt

lv00                jfs        94      188     2    open/stale    /fix

fslv01              jfs        314     628     2    open/stale    /oracle

 

# lsvg -p rootvg

rootvg:

PV_NAME           PV STATE          TOTAL PPs   FREE PPs    FREE DISTRIBUTION

hdisk0            active            542         36          00..00..00..00..36

hdisk1            active            1093        587         218..109..00..41..219

//2个hdisk使用的PP数目相同，都是506

 

5、添加启动顺序

# bootlist -m normal -o

-

hdisk0 blv=hd5

# bosboot -ad /dev/hdisk1

bosboot: Boot image is 37856 512 byte blocks.

# bootlist -m normal hdisk0 hdisk1

# bootlist -m normal -o

hdisk0 blv=hd5

hdisk1 blv=hd5

如果同步还没完成，AIX系统重启，重启完后VG会自动继续同步，不用人工干预

如果其中一块盘有问题，不影响系统使用