RedHat Linux 4/5下LVM 在线扩容
RHEL4：: ~/root> df -hFilesystem Size Used Avail Use% Mounted on/dev/sda2 15G 7.9G 6.2G 56% //dev/sda1 99M 12M 82M 13% /bootnone 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 -hFilesystem Size Used Avail Use% Mounted on/dev/sda2 15G 7.9G 6.2G 56% //dev/sda1 99M 12M 82M 13% /bootnone 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% /lvmRHEL5：
: ~/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 -hFilesystem 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% /boottmpfs 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/LogVol00resize2fs 1.39 (29-May-2006)Filesystem at /dev/VolGroup00/LogVol00 is mounted on /opt; on-line resizing requiredPerforming 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% /boottmpfs 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