FW：AIX下面扩文件系统空间

冷不防 2022-09-27 03:58 108阅读 0赞

AIX扩展文件系统空间

目的：扩展u03文件系统的空间

u03为56，55共同可以访问的文件系统上，他在卷组backvg上

从添加硬盘开始：

55操作

1.查看检测到的新硬盘  
   \#  cfgmgr

2.列出查找到的 新硬盘

\#lspv  
3.  
   \#  chdev -l hdisk5 -a pv=yes    ---- hdisk5  新加的盘、

4 。扩展卷组的空间

\# extendvg  backvg hdisk5        ---扩展卷组的空间

5.扩展文件系统的空间  
   
  \# chfs -a size=+40G /u03                  -----这里是给u03文件系统增加40G的空间，还有这里的“G”是大写的  
   Filesystem size changed to 384040960

eg：

\# chfs -a size=+40g /u03  
chfs: 0506-963 Invalid attribute value: +40g  
Usage: chfs \[-n Nodename\] \[-m NewMountpoint\] \[-u Group\] \[-A \{yes|no\}\]  
        \[-t \{yes|no\}\] \[-p \{ro|rw\}\] \[-a Attribute=Value\] \[-d Attribute\]  
        Filesystem

6.查看u03的空间，可以看到空间已经增加了

\# df -g  
Filesystem    GB blocks      Free %Used    Iused %Iused Mounted on  
/dev/hd4          10.00      9.99    1%     1944     1% /  
/dev/hd2          10.00      8.73   13%    30788     2% /usr  
/dev/hd9var        5.00      4.94    2%      645     1% /var  
/dev/hd3           1.00      0.91    9%      179     1% /tmp  
/dev/fwdump        0.50      0.50    1%        4     1% /var/adm/ras/platform  
/dev/hd1          20.00     15.89   21%    19419     1% /home  
/proc                 -         -    -         -     -  /proc  
/dev/hd10opt       1.00      0.95    6%     2150     1% /opt  
/dev/fslv00       49.00     23.20   53%       12     1% /ora\_back  
/dev/lv1         143.12     34.76   76%      173     1% /u02  
/dev/lv2         183.12    108.46   41%       13     1% /u03

到现在为止，55可以看到u03的空间增加了，但卷组的属性变了，56就不认卷组backvg了，所以我  
还要在56上做相应的操作来让56识别卷组backvg

首先在55机器上执行  
\# ls -l /dev/backvg  
crw-rw----   1 root     system       51,  0 Dec 18 2007  /dev/backvg

56上的操作

1.清楚56上的原有backvg在odm库中的配置信息

\# exportvg backvg

2.导入backvg的信息到56机器

\# smit importvg

\[Entry Fields\]  
  VOLUME GROUP name                                  \[backvg\]  
\* PHYSICAL VOLUME name                               \[hdisk5\]   ---backvg里的任何一个                                                                       +  
  Volume Group MAJOR NUMBER                          \[51\]      这个51相当于卷组的唯一标识；要没有他，两边机器就不能保证访问相同的卷组backvg                                                                   +\#

回车保存，退出，命令执行成功  
   
按理论上说，到这里就已经ok了，u03的空间已经扩展，并且56和55的机器也可以  
访问卷组backvg

核查：  
56  
\# varyonvg backvg  
\# mount /u03  
\# df -g  
\# umount /u03  
\# varyoff backvg

55  
\# varyonvg backvg  
\# mount /u03  
\# df -g  
\# umount /u03  
\# varyoff backvg

在这方面AIX和Tru64 UNIX绝对是最好的，AIX里只要卷还有空间，直接扩FS就是

\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#

扩展的过程中遇到的错误

1.扩展文件系统u03的时候

\# chfs -a size=+40G /u03  
0516-787 extendlv: Maximum allocation for logical volume lv2  
        is 1145.

从这个提示可以看到逻辑卷lv2已经到达最大的pp扩展数

\# lsvg -l backvg  
backvg:  
LV NAME             TYPE       LPs   PPs   PVs  LV STATE      MOUNT POINT  
loglv2              jfs2log    1     1     1    closed/syncd  N/A  
lv2                 jfs2       1465  1465  2    closed/syncd  /u03

\# lsvg -p backvg  
backvg:  
PV\_NAME           PV STATE          TOTAL PPs   FREE PPs    FREE DISTRIBUTION  
hdisk4            active            1183        0           00..00..00..00..00  
hdisk5            active            1159        876         232..00..180..232..232

那就扩展lv2的最大pp是数

\# smit chlv  
           ==>Change a logical Volume  
                ==>Logical volume name     \[lv2\]   ----lv2   人为填写

然后打开一个列表

\* Logical volume NAME                                 lv2  
  Logical volume TYPE                                \[jfs2\]                                                                      +  
  POSITION on physical volume                         middle                                                                     +  
  RANGE of physical volumes                           minimum                                                                    +  
  MAXIMUM NUMBER of PHYSICAL VOLUMES                 \[16\]                                                                         \#  
    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                               \[/u03\]  
  MAXIMUM NUMBER of LOGICAL PARTITIONS               \[3000\]      -----这里原来是1145，我给改成3000                                                                    \#  
  SCHEDULING POLICY for reading/writing               parallel                                                                   +  
    logical partition copies  
  PERMISSIONS                                         read/write                                                                 +  
  Enable BAD BLOCK relocation?                        yes                                                                        +  
  Enable WRITE VERIFY?                                no                                                                         +  
  Mirror Write Consistency?                           active                                                                     +  
  Serialize IO?                                       no                                                                         +

回车保存，退出。

再执行扩展文件系统u03的命令

\# chfs -a size=+40G /u03                   
   Filesystem size changed to 384040960

现在成功了。ok了

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