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How to resize a lv on Fedora 21?

asked 2015-02-16 15:50:53 -0500

nashsx gravatar image


I have installed Fedora within a LV in the VG /dev/fedora and there want to resize my /home partition, I have 65G unallocated space on /dev/sda, when I say sudo lvextend - - size +25G /dev/fedora/home it says: Insufficient free space: need 6400 extents, but only 1 available.

Can anybody help me with this issue? Do I need to resize some higher instance first? I am quite new to the whole lvm thing, this is my first Fedora installation on a LV and hard disk stuff was never my domain... Thanks a lot!

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answered 2015-02-17 05:22:05 -0500

cobra gravatar image

Normally I'd say 'do this then do this' to fix such a problem, but LVM is a large subject with the potential to completely screw over your computer if you get it wrong. Instead of providing some simple instructions, it might be more useful to you get a grounding in how LVM works.

If you're keen to learn about it, howtoforge has a really good LVM 101, it's here:

If you get through that, you'll understand this a lot better, and it goes on to explain how resizing happens.

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answered 2015-02-17 11:36:03 -0500

sergiomb gravatar image
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answered 2016-08-14 12:03:13 -0500

diman82 gravatar image

These are the steps to Extend a LVM partition:

  1. Format some unused space to a LVM2 volume/s.
  2. Add the newly created Physical Volume/s to a Volume Group that is used by your primary root/home/swap partition, by running the following command: sudo vgextend fedora /dev/sda8 (substitue /dev/sda8 with your newly created Physical Volume/s). A sucessful output would be: Volume group "**fedora**" successfully extended.
  3. sudo lvresize --size +9.99G /dev/fedora/home - substitute the size param with the size you want (no more than the max availalbe space, of course) and the second param with the partition you want to extend (root/home/swap). A sucessful output would be:

    Rounding size to boundary between physical extents: 9.99 GiB. Size of logical volume fedora/home changed from 15.84 GiB (4054 extents) to 25.83 GiB (6612 extents). Logical volume home successfully resized.

  4. sudo resize2fs /dev/fedora/home - substitute the desired partition with the needed one (root/home/swap). A sucessful output would be:

    resize2fs 1.42.13 (17-May-2015) Filesystem at /dev/fedora/home is mounted on /home; on-line resizing required old_desc_blocks = 1, new_desc_blocks = 2 The filesystem on /dev/fedora/home is now 6770688 (4k) blocks long.

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answered 2015-02-17 17:29:10 -0500

nashsx gravatar image

Well, thanks for the answers, I happened to get it work for myself now. I had to allocate the free space to the fedora-lv2-partition in gparted, took not even a second to perform this action. Afterwards, it worked with

sudo lvresize --size +25G /dev/home/fedora

It was just that unallocated space on the hard drive first has to be allocated to the overall LV before it can be available for resizing a lv-partition. This of course can be done in any partition programm or the terminal with the right set of commands.

I got this working maybe about fifteen minutes after posting my question, altough I really tried hard on my own first and then used the search function ln this board before posting. Though thanks for the answers! Regards, Nash.

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"It was just that unallocated space on the hard drive first has to be allocated to the overall LV before it can be available for resizing a lv-partition"

So, how did you do that?

Alessio.AguirrePimentel gravatar imageAlessio.AguirrePimentel ( 2015-09-19 22:00:23 -0500 )edit

Hello, I’ve resized my home partition using your solution. However, though sudo lvdisplay /dev/fedora/home shows the right size of the partition, nautilus and other programs don’t seem to have picked up the change. Have you made any further steps?

tomekwi gravatar imagetomekwi ( 2016-02-24 23:57:00 -0500 )edit

The last step would be to resize the associated filesystem to use the new partition, i.e. format the extra space.

sudo resize2fs /dev/fedora/home
JimParker gravatar imageJimParker ( 2016-06-10 15:20:56 -0500 )edit

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Asked: 2015-02-16 15:50:53 -0500

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Last updated: Feb 17 '15