需求

1.归档日志刷得太快,经常把空间挤爆.

2.Oracle数据库表空间需要扩容

解决方案

1.先做重要数据备份

2.进行文件系统扩容

步骤

1. df -g 查找出/u01 对应的VG卷 VOLUME GROUP:

# df -g

Filesystem    GB blocks      Free %Used    Iused %Iused Mounted on

.

.

/dev/fslv00       60.00      3.95   94%   550567    36% /u01

# lslv fslv00

LOGICAL VOLUME:     fslv00                 VOLUME GROUP:   rootvg

LV IDENTIFIER:      00f8d67e00004c000000014545274d99.13 PERMISSION:     read/write

VG STATE:           active/complete        LV STATE:       opened/syncd

TYPE:               jfs2                   WRITE VERIFY:   off

MAX LPs:            1024                   PP SIZE:        128 megabyte(s)

COPIES:             1                      SCHED POLICY:   parallel

LPs:                480                    PPs:            480

STALE PPs:          0                      BB POLICY:      relocatable

INTER-POLICY:       minimum                RELOCATABLE:    yes

INTRA-POLICY:       middle                 UPPER BOUND:    32

MOUNT POINT:        /u01                   LABEL:          /u01

MIRROR WRITE CONSISTENCY: on/ACTIVE                              

EACH LP COPY ON A SEPARATE PV ?: yes                                    

Serialize IO ?:     NO                                     

INFINITE RETRY:     no

2.查看rootvg的FREE PPs:

# lsvg rootvg

VOLUME GROUP:       rootvg                   VG IDENTIFIER:  00f8d67e00004c000000014545274d99

VG STATE:           active                   PP SIZE:        128 megabyte(s)

VG PERMISSION:      read/write               TOTAL PPs:      799 (102272 megabytes)

MAX LVs:            256                      FREE PPs:       10 (1280 megabytes)

LVs:                13                       USED PPs:       789 (100992 megabytes)

OPEN LVs:           12                       QUORUM:         2 (Enabled)

TOTAL PVs:          1                        VG DESCRIPTORS: 2

STALE PVs:          0                        STALE PPs:      0

ACTIVE PVs:         1                        AUTO ON:        yes

MAX PPs per VG:     32512                                     

MAX PPs per PV:     1016                     MAX PVs:        32

LTG size (Dynamic): 256 kilobyte(s)          AUTO SYNC:      no

HOT SPARE:          no                       BB POLICY:      relocatable

PV RESTRICTION:     none                     INFINITE RETRY: no

PP SIZE(PP单位)

FREE PPs(PP块数)

FREE PPs:       10 (1280 megabytes)   可以看到只剩下1个G了

3.发现空间不足,进行磁盘扩展

3.1刷新磁盘(若果添加了物理磁盘,需要刷新一下)

# cfgmgr

cfgmgr命令详见

http://blog.sina.com.cn/s/blog_5a2405d10100lbxy.html

3.2查看磁盘使用情况

# lspv

hdisk0          00f8d67e45274d2c                    rootvg          active      

hdisk1          none                                None                        

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                        

hdisk12         none                                None                        

hdisk13         none                                None                        

hdisk14         none                                None                        

hdisk15         none                                None                        

hdisk16         none                                None                        

hdisk17         none                                None                        

hdisk18         00f8d67efa51a04f                    oggvg           active      

hdisk19         00f8d67f77eb5875                    None                        

hdisk20         00f8d67e3106babe                    datavg          active      

hdisk21         00f8d67ee9fbaac8                    oggvg           active      

hdisk22         00f8d67fa805f48a                    None                        

hdisk23         none                                None                        

.

.

注:查看磁盘空间大小

#bootinfo -s hdisk1

3.3进行扩展,发现报错

#extendvg rootvg hdisk2 hdisk3

0516-1254 extendvg: Changing the PVID in the ODM.

0516-1254 extendvg: Changing the PVID in the ODM.

0516-1162 extendvg: Warning, The Physical Partition Size of 128 requires the

        creation of 1093 partitions for hdisk2. The limitation for volume group

        rootvg is 1016 physical partitions per physical volume. Use chvg command

        with -t option to attempt to change the maximum Physical Partitions per

        Physical volume for this volume group.

0516-1162 extendvg: Warning, The Physical Partition Size of 128 requires the

        creation of 1093 partitions for hdisk3. The limitation for volume group

        rootvg is 1016 physical partitions per physical volume. Use chvg command

        with -t option to attempt to change the maximum Physical Partitions per

        Physical volume for this volume group.

0516-792 extendvg: Unable to extend volume group.

#chdev -l hdisk2 -a pv=yes

#chdev -l hdisk3 -a pv=yes

#chvg -t rootvg

0516-1187 chvg: Volume group not changed. Either the volume group rootvg

        has the specified factor value or is at proper maximum physical partitions

        per physical volume limit already.            

0516-732 chvg: Unable to change volume group rootvg.

//因为PP数目已经达到上限

3.4刷新pp

#chvg -t 2 rootvg                                  

0516-1164 chvg: Volume group rootvg changed. With given characteristics rootvg

        can include upto 16 physical volumes with 2032 physical partitions each.

//数字2表示2×1016个PP

3.5再次进行扩展

#extendvg rootvg hdisk2 hdisk3

3.6查看磁盘使用情况,发现已经在使用

#lspv

hdisk0          0007df58fb3e71d4                    rootvg          active

hdisk1          00009d03638bf367                    rootvg          active

hdisk2          00009d034caa708d                    rootvg          active

hdisk3          00009d034caa7219                    rootvg          active

3.7查看vg卷的情况,确认已经扩容

#lsvg rootvg

VOLUME GROUP:       rootvg                   VG IDENTIFIER: 0007df580000d70000000113fb3e72ce

VG STATE:           active                   PP SIZE:        128 megabyte(s)

VG PERMISSION:      read/write               TOTAL PPs:      3278 (419584 megabytes)

MAX LVs:            256                      FREE PPs:       2208 (282624 megabytes)

LVs:                60                       USED PPs:       1070 (136960 megabytes)

OPEN LVs:           27                       QUORUM:         1

TOTAL PVs:          4                        VG DESCRIPTORS: 4

STALE PVs:          0                        STALE PPs:      0

ACTIVE PVs:         4                        AUTO ON:        yes

MAX PPs per VG:     32512                                    

MAX PPs per PV:     2032                     MAX PVs:        16

LTG size (Dynamic): 256 kilobyte(s)          AUTO SYNC:      no

HOT SPARE:          no                       BB POLICY:      relocatable

4.扩容完毕,进行文件系统扩容

#chfs -a size=+500G /u01

0516-787 extendlv: Maximum allocation for logical volume /u01 is 1145.

注：+代表在原来基础上增加500G大小

       

从这个提示可以看到逻辑卷lv2已经到达最大的pp扩展数

# lslv fslv00

LOGICAL VOLUME:     fslv00                 VOLUME GROUP:   rootvg

LV IDENTIFIER:      00f8d67e00004c000000014545274d99.13 PERMISSION:     read/write

VG STATE:           active/complete        LV STATE:       opened/syncd

TYPE:               jfs2                   WRITE VERIFY:   off
MAX LPs:            1024                   PP SIZE:        128 megabyte(s)

COPIES:             1                      SCHED POLICY:   parallel

LPs:                480                    PPs:            480

STALE PPs:          0                      BB POLICY:      relocatable

INTER-POLICY:       minimum                RELOCATABLE:    yes

INTRA-POLICY:       middle                 UPPER BOUND:    32

MOUNT POINT:        /u01                   LABEL:          /u01

MIRROR WRITE CONSISTENCY: on/ACTIVE                              

EACH LP COPY ON A SEPARATE PV ?: yes                                    

Serialize IO ?:     NO                                     

INFINITE RETRY:     no

已经超过max值了

重新调整pp的max值

# smit chlv

                                                       Change a Logical Volume

Move cursor to desired item and press Enter.

Change a Logical Volume

  Rename a Logical Volume

Change a Logical Volume

Type or select a value for the entry field.

Press Enter AFTER making all desired changes.

[Entry Fields]

* LOGICAL VOLUME name             [fslv00(填写正确的lv名字)]

Change a Logical Volume

Type or select values in entry fields.

Press Enter AFTER making all desired changes.

 

                                                        [Entry Fields]

* Logical volume NAME                                 fslv00

  Logical volume TYPE                                [jfs2]                                                                       +

  POSITION on physical volume                         middle                                                                      +

  RANGE of physical volumes                           minimum                                                                     +

  MAXIMUM NUMBER of PHYSICAL VOLUMES                 [32]                                                                          #

    to use for allocation

  Allocate each logical partition copy                yes                                                                         +

    on a SEPARATE physical volume?

  RELOCATE the logical volume during                  yes                                                                         +

    reorganization?

  Logical volume LABEL                               [/u01]

  MAXIMUM NUMBER of LOGICAL PARTITIONS               [1024(更改)]                                                                        #

  SCHEDULING POLICY for writing/reading               parallel                                                                    +

    logical partition copies

  PERMISSIONS                                         read/write                                                                  +

  Enable BAD BLOCK relocation?                        yes                                                                         +

  Enable WRITE VERIFY?                                no                                                                          +

  Mirror Write Consistency?                           active                                                                      +

  Serialize IO?                                       no                                                                          +

  Mirror Pool for First Copy                                                                                                      +

  Mirror Pool for Second Copy                                                                                                     +

  Mirror Pool for Third Copy                                                                                                      +

  Infinite Retry Option                               no

回车保存,退出

再次进行扩展文件系统

#chfs -a size=+500G /u01

没有报错,扩容完毕

df -g 再次检查就行了

 
 
 
 
 
 
 
 
 
 
 
 

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