# How to resize btrfs filesystem?

**URL:** <https://forums.suse.com/t/how-to-resize-btrfs-filesystem/36719>\
**Category:** SUSE Linux Enterprise Server\
**Created:** [January 13, 2022, 7:56pm UTC](https://forums.suse.com/t/how-to-resize-btrfs-filesystem/36719 "2022-01-13T19:56:09Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mjonadab](https://avatars.discourse-cdn.com/v4/letter/m/9fc348/32.png) [@mjonadab](https://forums.suse.com/u/mjonadab)\
**Post date:** [January 13, 2022, 7:56pm UTC](https://forums.suse.com/t/how-to-resize-btrfs-filesystem/36719/1 "2022-01-13T19:56:09Z")

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I can see that I have space on the volume group, so as to extend the logical volume where root / filesystem is mounted.

I know that after extending the logical volume, the btrfs filesystem needs to be updated, or resized to the new size I have never extended this kind of filesystem.

Do you know what are the steps to do this?  
After resizing the logical volume with lvextend  
I think this command would make increase the filesystem:  
btrfs filesystem resize _SIZE_ /mnt

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**Author:** ![Bernard\_Buterin](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/bernard_buterin/32/8495_2.png) [@Bernard\_Buterin](https://forums.suse.com/u/Bernard_Buterin)\
**Post date:** [January 13, 2022, 10:46pm UTC](https://forums.suse.com/t/how-to-resize-btrfs-filesystem/36719/2 "2022-01-13T22:46:30Z")

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Hi mjonadab,

you are on the right path.

I have used BTRFS as the storage drive in a VM and when I resize the Disk for the VM, I then resize the BTRFS with this command;

btrfs filesystem resize max /srv/dev-disk-by-path-pci-0000-06-0b.0/

It is very quick for me.