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Aix file system how to achieve online expansion, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain in detail for you, people with this need can come to learn, I hope you can gain something.

The file system expansion of aix is very flexible. If the hardware operation of adding a hard disk is not involved, you only need to use the commands in aix or the smitty menu. Of course, a good data backup is necessary in any case.

1. Because the database archive log directory space is small, and the log growth is relatively fast, because the archive log is full, it is easy to cause the database to hang, so you are going to expand the file system.

# df-g

Filesystem GB blocks Free Used Iused Iused Mounted on

/ dev/hd4 5.00 4.90% 7024 1% /

/ dev/hd2 20.00 14.77 27% 57946 2% / usr

/ dev/hd9var 10.00 9.37% 7454 / var

/ dev/hd3 15.00 14.41% 3290 1% / tmp

/ dev/hd1 6.00 5.01 17% 1873 1% / home

/ proc-/ proc

/ dev/hd10opt 15.00 14.62% 10242 / opt

/ dev/lv00 0.250.24% 18.1% / var/adm/csd

/ dev/fslv00 10.00 9.20% 2876 / sapmnt/BWP

/ dev/lv_oracle 0.50 0.50 1% 47.1% / oracle

/ dev/BWP 5.00 4.55% 12334 2% / oracle/BWP

/ dev/BWP_102_64 9.00 4.84 47% 22062 2% / oracle/BWP/102_64

/ dev/BWP_mirrlogA 0.50 0.40 20% 61% / oracle/BWP/mirrlogA

/ dev/BWP_mirrlogB 0.50 0.40 20% 61% / oracle/BWP/mirrlogB

/ dev/BWP_oraarch 50.00 38.82 93% 2791% / oracle/BWP/oraarch

/ dev/BWP_origlogA 0.50 0.36 29% 9 1% / oracle/BWP/origlogA

2. Check the currently active volumes, there are only two, and confirm with the engineer that the database archive log directory is on the ORAVG volume.

# lsvg-o

Oravg

Rootvg

View the information of the ORAVG volume in more detail

# lsvg-l oravg

Oravg:

LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT

Lv_oracle jfs2 2 2 1 open/syncd / oracle

Client jfs2 2 2 1 open/syncd / oracle/client

Stage_102_64 jfs2 28 28 1 open/syncd / oracle/stage/102_64

BWP jfs2 20 20 1 open/syncd / oracle/BWP

BWP_102_64 jfs2 36 36 1 open/syncd / oracle/BWP/102_64

BWP_origlogA jfs2 2 2 1 open/syncd / oracle/BWP/origlogA

BWP_origlogB jfs2 2 2 1 open/syncd / oracle/BWP/origlogB

BWP_mirrlogA jfs2 2 2 1 open/syncd / oracle/BWP/mirrlogA

BWP_mirrlogB jfs2 2 2 1 open/syncd / oracle/BWP/mirrlogB

BWP_oraarch jfs2 200 200 1 open/syncd / oracle/BWP/oraarch

It is found that the PPS size of the current directory is 200.

3 、 # lsvg oravg

VOLUME GROUP: oravg VG IDENTIFIER: 00c6abcf00004c000000012d038039cb

VG STATE: active PP SIZE: 256 megabyte (s)

VG PERMISSION: read/write TOTAL PPs: 7191 (1840896 megabytes)

MAX LVs: 512 FREE PPs: 2589 (582912 megabytes)

LVs: 18 USED PPs: 4602 (1257984 megabytes)

OPEN LVs: 18 QUORUM: 5 (Enabled)

TOTAL PVs: 9 VG DESCRIPTORS: 9

STALE PVs: 0 STALE PPs: 0

ACTIVE PVs: 9 AUTO ON: no

MAX PPs per VG: 130048

MAX PPs per PV: 1016 MAX PVs: 128

LTG size (Dynamic): 1024 kilobyte (s) AUTO SYNC: no

HOT SPARE: no BB POLICY: relocatable

Viewing the oravg volume group information shows that the size of each PPS is 256m. At present, there are 2589 PPS left in oravg, totaling 662784m.

4 、

Expand the space of the file system

Using the command # chfs-a size=+78G / oracle/BWP/oraarch # means to add 78g of space to / oracle/BWP/oraarch (note that G is uppercase)

After execution, lsvg found that free pp size did not increase, but when using smitty chfs to do it

It is found that the increase in size is already reflected in / oracle/BWP/oraarch.

The process of expanding capacity using smitty chfs:

# smitty chfs enter and select this Change/Show Characteristics of an Enhanced Journaled File System, then find the directory that needs to be expanded in the directory list and press enter.

Type or select values in entry fields.

Press Enter AFTER making all desired changes.

[Entry Fields]

File system name / oracle/BWP/oraarch

NEW mount point [/ oracle/BWP/oraarch]

SIZE of file system

Unit Size Megabytes +

Number of units [79872] #

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 131072 # includes the capacity of existing space after expansion

5. Check again to see if it has been added

# df-g

Filesystem GB blocks Free Used Iused Iused Mounted on

/ dev/hd4 5.00 4.90% 7024 1% /

/ dev/hd2 20.00 14.77 27% 57935 2% / usr

/ dev/hd9var 10.00 9.37% 7454 / var

/ dev/hd3 15.00 14.41% 3381 1% / tmp

/ dev/hd1 6.00 5.01 17% 1873 1% / home

/ proc-/ proc

/ dev/hd10opt 15.00 14.62% 10242 / opt

/ dev/lv00 0.250.24% 18.1% / var/adm/csd

/ dev/fslv00 10.00 9.20% 2876 / sapmnt/BWP

/ dev/lv_oracle 0.50 0.50 1% 47.1% / oracle

/ dev/BWP 5.00 4.55 10% 12348 2% / oracle/BWP

/ dev/BWP_102_64 9.00 4.84 47% 22069 2% / oracle/BWP/102_64

/ dev/BWP_mirrlogA 0.50 0.40 20% 61% / oracle/BWP/mirrlogA

/ dev/BWP_mirrlogB 0.50 0.40 20% 61% / oracle/BWP/mirrlogB

/ dev/BWP_oraarch 128.00 99.82 23% 663.1% / oracle/BWP/oraarch

All right, everything is fine. The expansion is successful.

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