Capacity to scale logical volumes in Linux

First, before the expansion, look at their own logical volume, Volume group, Physical Volume Information: (On the basis of the previous article: the creation of logical volumes in Linux)

To view a physical volume:

# PVDISPLAY/DEV/SDC1

To view a volume group:

Vgdisplay/dev/zhi

To view a logical volume:

Lvdisplay/dev/zhi/lv-zhi

Second, the expansion of the logical volume

Now I'm going to add 2G to the logical volume/dev/zhi/lv-zhi: (If it's reduced, change to a minus)

Lvextend-l +2g/dev/zhi/lv-zhi

After the increase is complete, re-identify:

Resize2fs/dev/zhi/lv-zhi

　

Attention:

My logical volume file system is EXT4 so use RESIZE2FS to identify, if you are XFS file system, you should be using:

Xfs_growfs/dev/zhi/lv-zhi

To re-view the logical Volume information:

Third, the volume group expansion

Now I'm going to add 5G to the logical volume, but now there's only 2G of space left in the volume group. So you need to scale up the volume group and then scale the logical volume

1. New Partition 5G:

Fdisk/dev/sdc

　　

2. Kernel re-recognition

Partprobe/dev/sdc

3. Create a physical volume

　

Pvcreate/dev/sdc2

4. Adding volume groups

Vgextend ZHI/DEV/SDC2

　　

View the VG information:

5. Increase the size of the logical volume:

　　

6. Re-refresh

Resize2fs  

To view information for a logical volume:

Copyright

Feiquan

Source: http://www.cnblogs.com/feiquan/

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Capacity to scale logical volumes in Linux