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This article will explain in detail how to expand linux lvm. The content of the article is of high quality, so the editor shares it for you as a reference. I hope you will have a certain understanding of the relevant knowledge after reading this article.

Due to the need of production, the capacity of / data directory is expanded from 90g to 190g, increasing 100g of space.

The production environment is a RHEL server, and the back end is EMC storage connected through a fibre switch. First of all, RAID the idle hard disk on EMC storage, divide the LUN, and map it to the production RHEL server.

(note: the premise of this expansion is that the partition must be completed in LVM format)

Disk information of the original server

# df-H

/ dev/datavg/lv_data

90g 81g 9G 90% / data

# lvdisplay

-Logical volume

LV Name / dev/datavg/lv_data

VG Name datavg

LV UUID Sgpcu1-7Xhr-0gwH-qjJ6-QwBB-k2KA-9DJvFt

LV Write Access read/write

LV Status available

# open 1

LV Size 90.00 GB

Current LE 24882

Segments 10

Allocation inherit

Read ahead sectors auto

-currently set to 256

Block device 253:1

Restart the server, identify the newly added LUN on the EMC, and expand the datavg volume on the server side

# powerrmt display dev=all

Pseudo name=emcpowery

CLARiiON ID=CKM00110900942 [SG_DRAGON]

Logical device ID=6006016003602C00F0154D04917BE011 [LUN 211]

State=alive; policy=CLAROpt; priority=0; queued-IOs=0

Owner: default=SP A, current=SP An Array failover mode: 1

=

-Host-- Stor-I take O Path-Stats--

# HW Path I/O Paths Interf. Mode State Q-IOs Errors

=

7 qla2xxx sdan SP B0 active alive 0 0

5 qla2xxx sdas SP B1 active alive 0 0

7 qla2xxx sdbo SP A1 active alive 0 0

5 qla2xxx sdq SP A0 active alive 0 0

# powerrmt config

# powerrmt save

3. Steps:

Fdisk / dev/emcpowery1 then press n to add a new partition

Enter p to create the primary partition, and enter twice to allocate all the space to this partition.

Enter t to convert the partition type; enter 8e to convert to linux lvm partition

Enter w to write save and exit.

Create PV

[root@linuxas /] # pvcreate / dev/ emcpowery1

Add to an existing logical volume group

[root@linuxas /] # vgextend datavg / dev/ emcpowery1

Expand the capacity of LVM

[root@linuxas /] # lvextend-L + 100G / dev/datavg/lv_data

Check the relationship between inode and block corresponding to LVM devices

[root@linuxas /] # e2fsck-f / dev/datavg/lv_data

Make the increased capacity effective

[root@linuxas /] # resize2fs / dev/datavg/lv_data

IV. Verification

# df-H

/ dev/datavg/lv_data

190G 81G 109G 43% / data

# lvdisplay

-Logical volume

LV Name / dev/datavg/lv_data

VG Name datavg

LV UUID Sgpcu1-7Xhr-0gwH-qjJ6-QwBB-k2KA-9DJvFt

LV Write Access read/write

LV Status available

# open 1

LV Size 190.00 GB

Current LE 39882

Segments 10

Allocation inherit

Read ahead sectors auto

-currently set to 256

Block device 253:1

On how to expand the capacity of linux lvm to share here, I hope that the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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