Extend a VPS disk

Extend a VPS disk on a live system

âš  Resizing any live partition without unmounting it first comes with a tremendous risk of losing data, thus it is not recommended. The proper method is to unmount the partition and resize it while booted into rescue CD

In the panel, select the new size and confirm

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After reboot

Select your current OS:


For Alpine linux

Find the partition to extend using df

    df -h | grep '/$' | awk '{ print $1}'

Check the new partition set a test on next boot and reboot (vda in the example bellow, change regarding the result of the previous command)

    resize2fs -f /dev/vda

To check the new partition set a test on next boot and reboot

    touch /forcefsck
    reboot

After the next reboot the system is checked and safe.

All in one

    resize2fs -f $(df -h | grep '/$' | awk '{ print $1}')
    touch /forcefsck
    reboot



For Debian or OpenSUSE linux

Using Debian and OpenSUSE, the process is automatic.



For Arch linux, RedHat like (Alma, CentOS, Fedora, Rocky), Ubuntu linux

Locate the disk device name (/dev/vd//x//) and the partition number hosting / (/dev/vda and 4 in that example)

    lsblk

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To collect only the / partition:

    lsblk | grep '/$'


Using system tools (recommended)

Run the command bellow (update the information according to your partitioning, vda + 4 in that example)

    growpart /dev/vda 4 && resize2fs /dev/vda4


Using fdisk (not recommanded)

Enter the disk partitioner using the disk device name

    fdisk /dev/vda

You can enter //p// to print the disk information and confirm this is the correct one.

Delete the partition containing / (4 in that example, change according to your partitioning)

    d
    4

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Create a new partition for / (4 in that example, change according to your partitioning)

    n
    4
     [press return]
     [press return]

A red message might appear asking if you want to keep the original signature, enter N for no

    N

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Enter w for saving the changes

    w

Now the partition is extended.

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Optional but recommended.

To check the new partition set a test on next boot and reboot

    touch /forcefsck
    reboot

After the next reboot the system is checked and safe.



FreeBSD using ZFS

Locate your zfs root partition

    gpart show

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Correct the partition table (replace vtbd0 with the result of //gpart show//)

    gpart recover /dev/vtbd0
    fsck -F /dev/vtbd0

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Grow the zfs root partition (replace vtbd0 with the result of //gpart show//, //-i 4// with //-i your partition number// )

    gpart resize -i 4 -a 4k vtbd0

Increase the zfs root size (replace vtbd0 with the result of //gpart show//, and 4 with your partition number )

    zpool online -e $(zpool get all | cut -d ' ' -f 1 | head -n 2| tail -n 1) /dev/vtbd0p4



OpenBSD

Go to the control panel and select Rescue mode

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Select OpenBSD install CD

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Go to the console and wait. When the prompt ask your interaction, enter the shell.

    s

Create the main drive device.

    cd /dev
    sh MAKEDEV sd0

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Enter the partitioning edition mode

    fdisk -e sd0

Enter:

    e 3

Type 3 times return and manually set the maximum value written between brackets after //"Partition size"//

Enter:

    w

Enter:

    q

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Enter the partitioning mode

    Disklabel -E sd0

Enter:

    b

Press return

Enter:

    *

Enter:

    w

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Now resize the / partition:

Enter:

    c a

Enter:

    *

Enter:

    w

Enter:

    q

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Grow the partition:

    growfs sd0a

confirm if you have a backup

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Check for bad blocks

    fsck_ffs /dev/sd0a

When asked for "MARK FILE SYSTEM CLEAN?", confirm entering 

    F

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Disable the Rescue mode, the server will reboot.

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If needed enter the command in the shell

    reboot