Extended logical partitions and extended logical volume groups under Linux

At first I have a small misunderstanding, a moment not figured out now, hope will not be repeated.

Before practicing, I first added a piece of 10G hard disk and then partitioned the disk: the following

Fdisk/dev/sdb N P 4 t 8e W

Pvcreate/dev/sdb4

Pvdisplay

Vgcreate VG01/DEV/SDB4

Vgdisplay

Lvcreate-l 100m-n lvdata1 VG01

Mkfs-t ext3/dev/vg01/lvdata1

Note The key is here the 100M, originally 10G hard disk, I opened only divided the 100M logical partition, the result 100M logical partition ran out, I in Add space, puzzled.

Lvextentd-l +100m/dev/vg01/lvdata1 Note that the space added here, and so on, when added to 10G, the disk has run out of space. You can only expand a volume group by adding a disk.

Resize2fs/dev/vg01/lvdata1

What if the logical partition space in all logical volume groups is exhausted? Increase the logical volume group. Add a piece of hard disk 10G.

FDISK/DEV/SDC N P 1 t 8e W

Pvcreate/dev/sdc1

PVs

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At this point the/DEV/SDC1 has not been VG01, so the logical volume group VG01 is extended.

Vgextend VG01/DEV/SDC1

PVs

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At this point in the extended logical partition, there is space to allocate.

Summarize:

To extend a logical volume command:

Lvdisplay

Lvextend-l 100m/dev/vg01/lvdata1 ( This value is what the above command shows you see )

Resize2fs/dev/vg01/lvdata1

Extending Logical Volume Groups

Vgextend VG01/DEV/SDC1

PVs

To delete a logical volume:

Umount/lvm

Modify/etc/fstab

Lvremove

Vgremove/dev/vg01

Pvremove/dev/sdb4/dev/sdc1

This article is from the "Common Documents" blog, so be sure to keep this source http://yujianglei.blog.51cto.com/7215578/1566983

Extended logical partitions and extended logical volume groups under Linux