RedHat Linux 4/5下LVM 在线扩容
RHEL4：
: ~/root> df
-h
Filesystem Size Used Avail Use% Mounted
on
/dev/sda2 15G 7.9G 6.2G 56% /
/dev/sda1
99M 12M 82M 13% /boot
none 1014M 0 1014M 0%
/dev/shm
/dev/sda3 15G 3.9G 9.9G 29%
/opt
/dev/sda6 47G 17G 28G 39%
/oradata
/dev/hda 2.3G 2.3G 0 100%
/mnt
/dev/mapper/vg00-lv00
6.6G 6.2G 443M 94%
/lvm
: ~/root> vgdisplay
---
Volume group ---
VG Name vg00
System ID
Format lvm2
Metadata Areas 2
Metadata
Sequence No 15
VG Access read/write
VG Status
resizable
MAX LV 0
Cur LV 1
Open
LV 1
Max PV 0
Cur PV
2
Act PV 2
VG Size 9.99 GB
PE
Size 4.00 MB
Total PE 2558
Alloc PE /
Size 1560 / 6.09 GB
Free PE / Size 998 /
3.90 GB
VG UUID
qFsZT2-rf1T-pkbe-2JM6-WZfk-21RM-7hnMBh
: ~/root> lvdisplay
---
Logical volume ---
LV Name /dev/vg00/lv00
VG
Name vg00
LV UUID
FkDRvC-slrn-geiz-BqQC-MM8o-qHWG-eqJzd6
LV Write Access
read/write
LV Status available
# open
1
LV Size 6.09 GB
Current LE 1560
Segments
2
Allocation inherit
Read ahead sectors auto
-
currently set to 256
Block device 253:0
: ~/root> lvextend -l 2000 /dev/vg00/lv00
/dev/cdrom: open failed: Read-only file system
Extending logical volume lv00 to 7.81 GB
Logical volume lv00 successfully
resized
: ~/root> ext2online
/dev/vg00/lv00
ext2online v1.1.18 - 2001/03/18 for EXT2FS 0.5b
: ~/root> df
-h
Filesystem Size Used Avail Use% Mounted
on
/dev/sda2 15G 7.9G 6.2G 56% /
/dev/sda1
99M 12M 82M 13% /boot
none 1014M 0 1014M 0%
/dev/shm
/dev/sda3 15G 3.9G 9.9G 29%
/opt
/dev/sda6 47G 17G 28G 39%
/oradata
/dev/hda 2.3G 2.3G 0 100%
/mnt
/dev/mapper/vg00-lv00
7.7G 6.2G 1.6G 80%
/lvm
RHEL5：
: ~/root> vgdisplay
---
Volume group ---
VG Name VolGroup00
System
ID
Format lvm2
Metadata Areas
2
Metadata Sequence No 11
VG Access read/write
VG
Status resizable
MAX LV 0
Cur
LV 5
Open LV 5
Max PV
0
Cur PV 2
Act PV 2
VG
Size 57.84 GB
PE Size 32.00 MB
Total PE 1851
Alloc PE / Size 1820 /
56.88 GB
Free PE / Size 31 / 992.00 MB
VG
UUID WXEcHz-UBt6-E3xy-7jgk-Xs3H-vHNq-TEFzp3
: ~/root> df -h
Filesystem
Size Used Avail Use% Mounted
on
/dev/mapper/VolGroup00-LogVol04
12G 4.3G 7.0G
39% /
/dev/mapper/VolGroup00-LogVol01
9.7G 151M
9.1G 2% /arch
/dev/mapper/VolGroup00-LogVol00
9.7G
2.0G 7.3G 22%
/opt
/dev/mapper/VolGroup00-LogVol02
18G
9.0G 7.3G 56% /data
/dev/sda1 99M 13M 82M 14%
/boot
tmpfs 1006M 0 1006M 0%
/dev/shm
/dev/hda 3.4G 3.4G 0 100% /mnt
: ~/root> lvdisplay
/dev/VolGroup00/LogVol00
--- Logical volume ---
LV Name
/dev/VolGroup00/LogVol00
VG Name VolGroup00
LV
UUID x3Pcas-WKn4-aU7U-OIFw-y4Ip-mP64-YkFbA9
LV Write
Access read/write
LV Status available
#
open 1
LV Size 10.00
GB
Current LE 320
Segments 1
Allocation inherit
Read ahead sectors auto
- currently
set to 256
Block device 253:2
: ~/root> lvextend -l 350
/dev/VolGroup00/LogVol00
Extending logical volume LogVol00 to 10.94
GB
Logical volume LogVol00 successfully resized
: ~/root> resize2fs
/dev/VolGroup00/LogVol00
resize2fs 1.39 (29-May-2006)
Filesystem at
/dev/VolGroup00/LogVol00 is mounted on /opt; on-line resizing
required
Performing an on-line resize of /dev/VolGroup00/LogVol00 to 2867200
(4k) blocks.
The filesystem on /dev/VolGroup00/LogVol00 is now 2867200 blocks
long.
: ~/root> df
-h
Filesystem Size Used Avail Use% Mounted
on
/dev/mapper/VolGroup00-LogVol04
12G 4.3G 7.0G
39% /
/dev/mapper/VolGroup00-LogVol01
9.7G 151M
9.1G 2% /arch
/dev/mapper/VolGroup00-LogVol00
11G
2.0G 8.1G 20%
/opt
/dev/mapper/VolGroup00-LogVol02
18G
9.0G 7.3G 56% /data
/dev/sda1 99M 13M 82M 14%
/boot
tmpfs 1006M 0 1006M 0%
/dev/shm
/dev/hda 3.4G 3.4G 0 100% /mnt
: ~/root> lvdisplay
/dev/VolGroup00/LogVol00
--- Logical volume ---
LV Name
/dev/VolGroup00/LogVol00
VG Name VolGroup00
LV
UUID x3Pcas-WKn4-aU7U-OIFw-y4Ip-mP64-YkFbA9
LV Write
Access read/write
LV Status available
#
open 1
LV Size 10.94
GB
Current LE 350
Segments 2
Allocation inherit
Read ahead sectors auto
- currently
set to 256
Block device 253:2
