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about df and lvm
From: |
tq01azk |
Subject: |
about df and lvm |
Date: |
Tue, 4 Dec 2007 13:26:32 +0800 |
test environment:
centos 4.4
Linux localhost.localdomain 2.6.9-55.0.12.ELsmp #1 SMP Fri Nov 2 11:19:08 EDT
2007 i686 i686 i386 GNU/Linux
lvm> version
LVM version: 2.02.21-RHEL4 (2007-03-26)
Library version: 1.02.17-RHEL4 (2007-04-24)
Driver version: 4.5.5
I creat 4G of size lvm partition.
#df -h
/dev/mapper/lvtest-lv 4.0G 2.6G 1.3G 68% /mnt/lv
#lvdisplay
--- Logical volume ---
LV Name /dev/lvtest/lv
VG Name lvtest
LV UUID t4tXV0-UE5j-K7oq-IoXj-hXfP-mgej-CWXQVA
LV Write Access read/write
LV Status available
# open 1
LV Size 4.09 GB
Current LE 131
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 253:2
then I use the command "lvextend" to add 800M capatity into the lvm.
but i also see the capatity is 4G by using df,lvdisplay show right information
#lvextend -L +800M /dev/lvtest/lv
Extending logical volume lv to 4.88 GB
Logical volume lv successfully resized
#df -h
/dev/mapper/lvtest-lv 4.0G 2.6G 1.3G 68% /mnt/lv
#lvdisplay
--- Logical volume ---
LV Name /dev/lvtest/lv
VG Name lvtest
LV UUID t4tXV0-UE5j-K7oq-IoXj-hXfP-mgej-CWXQVA
LV Write Access read/write
LV Status available
# open 1
LV Size 4.88 GB
Current LE 156
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 253:2
2007-12-04
tq01azk
- about df and lvm,
tq01azk <=