Logical Volume Manager (logical Volume management)

Logical Volume Manager (Logical Volume management )

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Pv

Phiscal Volume Physical Volume

Pe

: phiscal Extent Physical Block

Increased data, limited size of physical volumes, poor scalability

Pv:py

Create steps

: Partition –--formatted as Linux LVM format-----Create PV------Add VG------Divide PE-----composed LV

1:

FDISK/DEV/SDA Create new partition to LVM format

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2. Create PV, Pvcreate/devce

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3. Create VG

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4 Creating the LV

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5.lv generated Files Myvg-mylv

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6. Format the LV and mount

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Two: extended VG

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reduce VG: move a disk out of a volume group

Reduce the file system first----reduce the LV----pvmove650) this.width=650; "Title=" LVM Logical Volume Management-Zqiushi@yeah-zqiushi@yeah "src="/http Img0.ph.126.net/jdrzui9ndphgqjuxtjjpkg==/6631334947025314374.jpg "/>

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Three: Extended LV

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Note : df–lh View size remains unchanged after re-mount 650) this.width=650; "Title=" LVM Logical Volume Management-Zqiushi@yeah-zqiushi@yeah "src="/HTTP/ Img1.ph.126.net/8uzebqhq0aiq-jozp2qvha==/6630914933584841341.jpg "/>

Need to execute the following command: 650) this.width=650; "Title=" LVM Logical Volume Management-Zqiushi@yeah-zqiushi@yeah "src=" http://img1.ph.126.net/arpi_- Zhjjbm_stnjj_mfq==/6631204105141608694.jpg "/>

Normal size

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Four: Reduce LV

The steps are as follows: Umount; file system forced detection; narrow logical boundaries;

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Note: This prompt is to be detected

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Reduced success

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Logical Volume Manager (logical Volume management)