oracle ASM on LVM (linux卷管理),配置LVM
LVM在后期因先前指定的路径空间不够时调整起来很方便，也可以就用于ASM，但是并不推荐ASM安装在LVM之上，因为LVM的功能在ASM上已存在。
[root@rac1 ~]# fdisk -l
Disk /dev/sdb: 21.4 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdb doesn't contain a valid partition table
1,CREATE DISK PARTITIONS
[root@rac1 ~]# fdisk /dev/sdb
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-2610, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-2610, default 2610): 1605
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 2
First cylinder (1606-2610, default 1606):
Using default value 1606
Last cylinder or +size or +sizeM or +sizeK (1606-2610, default 2610):
Using default value 2610
Command (m for help): w
The partition table has been altered!
[root@rac1 ~]# fdisk -l
..
Disk /dev/sdb: 21.4 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 1605 12892131 83 Linux
/dev/sdb2 1606 2610 8072662+ 83 Linux
2,CREATE Physical Volumes
[root@rac1 ~]# pvcreate /dev/sdb1 /dev/sdb2
[root@rac1 ~]# pvdisplay
"/dev/sdb1" is a new physical volume of "12.29 GB"
--- NEW Physical volume ---
PV Name /dev/sdb1
VG Name
PV Size 12.29 GB
Allocatable NO
PE Size (KByte) 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID wdPTFe-4HjL-H7zN-PXlh-l3qk-9kFX-Z7ryWd
"/dev/sdb2" is a new physical volume of "7.70 GB"
--- NEW Physical volume ---
PV Name /dev/sdb2
VG Name
PV Size 7.70 GB
Allocatable NO
PE Size (KByte) 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID PUt7Xd-Pl9o-6xfa-xth3-LSkc-AXGz-JPgAw6
3,Create Volume Group
[root@rac1 ~]# vgcreate vgtest /dev/sdb1
Volume group "vgtest" successfully created
[root@rac1 ~]# vgcreate vgtest /dev/sdb2
A volume group called vgtest already exists.
[root@rac1 ~]# vgextend vgtest /dev/sdb2
Volume group "vgtest" successfully extended
[root@rac1 ~]# vgdisplay
--- Volume group ---
VG Name vgtest
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 2
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 0
Open LV 0
Max PV 0
Cur PV 2
Act PV 2
VG Size 19.99 GB
PE Size 4.00 MB
Total PE 5117
Alloc PE / Size 0 / 0
Free PE / Size 5117 / 19.99 GB
VG UUID UuS0QK-AIar-uvXO-vk3U-rLlK-8MyS-z122nT
4,Create Logical Volumes
[root@rac1 ~]# lvcreate -L 1G -n oracle_asm01 vgtest
Logical volume "oracle_asm01" created
[root@rac1 ~]# lvcreate -L 1G -n oracle_asm02 vgtest
Logical volume "oracle_asm02" created
[root@rac1 ~]# lvcreate -L 1G -n oracle_asm03 vgtest
Logical volume "oracle_asm03" created
[root@rac1 ~]# lvcreate -L 5G -n oracle_soft vgtest
Logical volume "oracle_soft" created
[root@rac1 ~]# lvdisplay
--- Logical volume ---
LV Name /dev/vgtest/oracle_asm01
VG Name vgtest
LV UUID LYIREw-rSha-9wDh-kpkF-a0or-kY5s-a4FdmA
LV Write Access read/write
LV Status available
# open 0
LV Size 1.00 GB
Current LE 256
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Logical volume ---
LV Name /dev/vgtest/oracle_asm02
VG Name vgtest
LV UUID D7onU9-EzWF-lSRu-1g8I-0JQm-jPZV-zR2mH6
LV Write Access read/write
LV Status available
# open 0
LV Size 1.00 GB
Current LE 256
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
--- Logical volume ---
LV Name /dev/vgtest/oracle_asm03
VG Name vgtest
LV UUID k1jC8S-kwHt-cSG4-iHHN-HmVj-w8Xu-fQtII6
LV Write Access read/write
LV Status available
# open 0
LV Size 1.00 GB
Current LE 256
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:2
--- Logical volume ---
LV Name /dev/vgtest/oracle_soft
VG Name vgtest
LV UUID c0hOlT-dPPp-4yF3-Pd6T-uiRQ-hMWn-kWdaz2
LV Write Access read/write
LV Status available
# open 0
LV Size 5.00 GB
Current LE 1280
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:3
5,mount oracle_soft and mack file-system
[root@rac1 ~]# ll /dev/vgtest/*
lrwxrwxrwx 1 root root 31 Jul 11 14:03 /dev/vgtest/oracle_asm01 -> /dev/mapper/vgtest-oracle_asm01
lrwxrwxrwx 1 root root 31 Jul 11 14:03 /dev/vgtest/oracle_asm02 -> /dev/mapper/vgtest-oracle_asm02
lrwxrwxrwx 1 root root 31 Jul 11 14:03 /dev/vgtest/oracle_asm03 -> /dev/mapper/vgtest-oracle_asm03
lrwxrwxrwx 1 root root 30 Jul 11 14:07 /dev/vgtest/oracle_soft -> /dev/mapper/vgtest-oracle_soft
[root@rac1 dev]# mkfs.ext3 /dev/vgtest/oracle_soft
mke2fs 1.39 (29-May-2006)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
655360 inodes, 1310720 blocks
65536 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=1342177280
40 block groups
32768 blocks per group, 32768 fragments per group
16384 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 22 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
[root@rac1 dev]# cd /
[root@rac1 /]# mkdir u01
[root@rac1 /]# mount /dev/vgtest/oracle_soft /u01
[root@rac1 /]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda5 15G 3.3G 11G 25% /
/dev/sda3 996M 34M 911M 4% /tmp
/dev/sda1 99M 21M 74M 22% /boot
tmpfs 1007M 0 1007M 0% /dev/shm
/dev/mapper/vgtest-oracle_soft
5.0G 139M 4.6G 3% /u01
6, resize oracle_soft LV(if not enough free disk space)
[root@rac1 /]# vgdisplay
--- Volume group ---
VG Name vgtest
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 6
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 4
Open LV 1
Max PV 0
Cur PV 2
Act PV 2
VG Size 19.99 GB
PE Size 4.00 MB
Total PE 5117
Alloc PE / Size 2048 / 8.00 GB
Free PE / Size 3069 / 11.99 GB
VG UUID UuS0QK-AIar-uvXO-vk3U-rLlK-8MyS-z122nT
[root@rac1 /]# lvextend -L +2G /dev/vgtest/oracle_soft
Extending logical volume oracle_soft to 7.00 GB
Logical volume oracle_soft successfully resized
[root@rac1 /]# resize2fs /dev/vgtest/oracle_soft 7G
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/vgtest/oracle_soft is mounted on /u01; on-line resizing required
Performing an on-line resize of /dev/vgtest/oracle_soft to 1835008 (4k) blocks.
The filesystem on /dev/vgtest/oracle_soft is now 1835008 blocks long.
[root@rac1 /]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda5 15G 3.3G 11G 25% /
/dev/sda3 996M 34M 911M 4% /tmp
/dev/sda1 99M 21M 74M 22% /boot
tmpfs 1007M 0 1007M 0% /dev/shm
/dev/mapper/vgtest-oracle_soft
6.9G 140M 6.5G 3% /u01
7,Create ORACLE ASM and Change device permissions
[root@rac1 /]# cd /dev/mapper/
[root@rac1 mapper]# ll
total 0
crw------- 1 root root 10, 62 Jul 11 15:41 control
brw-rw---- 1 root disk 253, 0 Jul 11 15:41 vgtest-oracle_asm01
brw-rw---- 1 root disk 253, 1 Jul 11 15:41 vgtest-oracle_asm02
brw-rw---- 1 root disk 253, 2 Jul 11 15:41 vgtest-oracle_asm03
brw-rw---- 1 root disk 253, 3 Jul 11 15:41 vgtest-oracle_soft
chown grid:oinstall vgtest-oracle_asm*
chmod 660 vgtest-oracle_asm*
8,Create ASM diskgroups(11g or later can use ASMCA Utility)
SQL> alter system set asm_diskstring =’/dev/mapper/vgtest-oracle_asm*’
sql>create diskgroup dg01 external redundancy disk '/dev/mapper/vgtest-oracle_asm01'
sql>create diskgroup dg02 external redundancy disk '/dev/mapper/vgtest-oracle_asm02'
sql>create diskgroup dg03 external redundancy disk '/dev/mapper/vgtest-oracle_asm03'
"Note: Do not add logical volumes to Automatic Storage Management disk groups. Automatic Storage Management works best when you add raw disk devices to disk groups. If you are using Automatic Storage Management, then do not use LVM for striping. Automatic Storage Management implements striping and mirroring."
extend read
http://www.anbob.com/?p=1069
http://www.anbob.com/?p=1430
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