CODEWITHSUNDEEP
centosvmware
Mert Simsek
Mert Simsek

Reputation: 698

Centos Disk LVM Extension

I am having a problem with a VMWare VM which Centos7 is installed in it.

lsblk command gives something like below

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df -h gives this

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I am trying to extend root lvm to the partition but I am not able to do it no matter what I tried.

I tried fdisk /dev/sda to create a new partition and extend lvm to this partition but fdisk is getting stuck after partition number.

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Some other useful commands give these results just in case they are helpful.

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Any help would be appreciated. Thanks in advance.

Upvotes: 1

Views: 580

Answers (2)

Mert Simsek
Mert Simsek

Reputation: 698

I have executed pvresize /dev/sda2 command and after this I got pvs like below.

enter image description here

After this, I tried to execute vgextend centos /dev/sda2 but I got this error.

enter image description here

However vgs and vgdisplay centos commands are giving something different than before like below.

enter image description here

Upvotes: 0

LIU YUE
LIU YUE

Reputation: 1997

from your screenshot, your sda2 partition is 199G, sda1 takes 1G, your sda total size is 200G, you cannot make new partition from sda, that's why it stuck there; and to resolve your issue I provide two options for you to refer,but before operation please make sure you back up all your important data or vm files.

Option 1: this one is just my thoughts,unverified: from your vgs and pvs, you can see your sda2 only contributes <29G to whole VG(centos), so very simple way of extending your /root is:

1) pvresize /dev/sda2

,after execute, pls run pvs to check whether the pv size increased, if not, stop here

2) vgextend centos /dev/sda2

,after execute,pls check your vgs, see whether the size increased, if so go on to the next

3) lvextend -l 100%FREE /dev/mapper/centos-root

,after this, check lvs, if the root size not increased, go on

4) try:

xfs_growfs /dev/mapper/centos-root or resize2fs /dev/mapper/centos-root

Option 2: best practice is to use pvmove, this is strongly recommended for product environment, you can learn from https://askubuntu.com/questions/161279/how-do-i-move-my-lvm-250-gb-root-partition-to-a-new-120gb-hard-disk

Upvotes: 1

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