aix文件系统在线扩容
1.查看需要扩容的目录
bash-4.2# df -g
Filesystem GB blocks Free %Used Iused %Iused Mounted on
/dev/hd4 11.00 9.21 17% 10953 1% /
/dev/hd2 9.00 6.73 26% 47955 3% /usr
/dev/hd9var 3.50 3.14 11% 3301 1% /var
/dev/hd3 2.00 0.99 51% 87 1% /tmp
/dev/hd1 0.50 0.37 27% 430 1% /home
/dev/hd11admin 0.25 0.25 1% 5 1% /admin
/proc - - - - - /proc
/dev/hd10opt 3.00 2.88 4% 2496 1% /opt
2、查看当前活动的卷，只有两个，经与工程师确认数据库归档日志目录在ROOTVG卷上。：因为我只有一个VG卷
bash-4.2# 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 15 15 1 open/syncd N/A
hd8 jfs2log 1 1 1 open/syncd N/A
hd4 jfs2 352 352 1 open/syncd /
hd2 jfs2 288 288 1 open/syncd /usr
hd9var jfs2 112 112 1 open/syncd /var
hd3 jfs2 64 64 1 open/syncd /tmp
hd1 jfs2 16 16 1 open/syncd /home
hd10opt jfs2 96 96 1 open/syncd /opt
hd11admin jfs2 8 8 1 open/syncd /admin
发现当前目录的PPS大小为32
bash-4.2# lsvg rootvg
VOLUME GROUP: rootvg VG IDENTIFIER: 00c0bd4000004c0000000144f505c57f
VG STATE: active PP SIZE: 32 megabyte(s)
VG PERMISSION: read/write TOTAL PPs: 959 (30688 megabytes)
MAX LVs: 256 FREE PPs: 6 (192 megabytes)
LVs: 10 USED PPs: 953 (30496 megabytes)
OPEN LVs: 9 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
DISK BLOCK SIZE: 512
查看rootvg卷组信息可知每个PPS大小为32M，目前rootvg还剩6个PPS，共计192M；
4、
扩展文件系统的空间
使用命令 # chfs -a size=+32m /oracle/BWP/oraarch #意思是给/oracle/BWP/oraarch增加32m的空间
执行完再lsvg 发现free pp size 没有增加，但是用smitty chfs 来做的时候
发现，增加的 size 在/oracle/BWP/oraarch上已经体现了。
使用smitty chfs来扩容的过程：
#smitty chfs回车后选择这一项Change/Show Characteristics of an Enhanced Journaled File System，然后在目录列表里找到需要扩容的目录按回车。
Type or select values in entry fields.
Press Enter AFTER making all desired changes.
[Entry Fields]
File system name /home
NEW mount point [/home]
SIZE of file system
Unit Size 512bytes +
Number of units [1056768] #
Mount GROUP []
Mount AUTOMATICALLY at system restart? no +
PERMISSIONS read/write +
Mount OPTIONS [] +
Start Disk Accounting? no +
Block Size (bytes) 4096
Inline Log? no
Inline Log size (MBytes) [0] #
Extended Attribute Format [v1]
Enable Quota Management? no +
Allow Small Inode Extents? no +
we will see result:
COMMAND STATUS
Command: OK stdout: yes stderr: no
Before command completion, additional instructions may appear below.
Filesystem size changed to 1056768 #扩容后包含已有空间的容量
5、再检查一下看新增上没有
bash-4.2# df -m
Filesystem MB blocks Free %Used Iused %Iused Mounted on
/dev/hd4 11264.00 9435.95 17% 10953 1% /
/dev/hd2 9216.00 6895.77 26% 47955 3% /usr
/dev/hd9var 3584.00 3215.05 11% 3309 1% /var
/dev/hd3 2048.00 1013.15 51% 87 1% /tmp
/dev/hd1 657.25 374.75 63% 430 1% /home
/dev/hd11admin 256.00 255.59 1% 5 1% /admin
/proc - - - - - /proc
/dev/hd10opt 3072.00 2950.13 4% 2496 1% /opt
好了，一切正常，扩容成功。