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Update Workflows/Linux/Expand XFS Filesystem.md

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Nicole Rappe
2024-11-22 12:27:36 -07:00
parent 8abc138de3
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Workflows/Linux/Expand XFS Filesystem.md
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@ -13,13 +13,19 @@ This part should be fairly straight-forward. Using whatever hypervisor is runni
This step goes over how to increase the usable space of the virtual disk within the GuestVM itself after it was expanded.
!!! warning "Be Careful"
When you follow these steps, you will be deleting the existing partition and immediately re-creating it. If you do not use the **EXACT SAME** starting sector for the new partition, you will destroy data.
When you follow these steps, you will be deleting the existing partition and immediately re-creating it. If you do not use the **EXACT SAME** starting sector for the new partition, you will destroy data. Be sure to read every annotation next to each command to fully understand what you are doing.
``` sh
sudo dnf install gdisk -y
gdisk /dev/<diskNumber> # (1)
p <ENTER> # (2)
d <ENTER> # (3)
n <ENTER> # (4)
4 <ENTER> # (5)
<DEFAULT-FIRST-SECTOR-VALUE> (Just press ENTER) # (6)
<DEFAULT-LAST-SECTOR-VALUE> (Just press ENTER) # (7)
<FILESYSTEM-TYPE=8300 (Linux Filesystem)> (Just press ENTER) # (8)
w <ENTER> # (9)
```
1. The first command needs you to enter the disk identifier. In most cases, this will likely be the first disk, such as `/dev/sda`. You do not need to indicate a partition number in this step, as you will be asked for one in a later step after identifying all of the partitions on this disk in the next command.
@ -43,3 +49,35 @@ d <ENTER> # (3)
3 3328000 19826687 7.9 GiB 8200
4 19826688 1073741790 502.5 GiB 8300 Linux filesystem
```
4. This tells gdisk to create a new partition.
5. This tells gdisk to re-make partition 4 (the one we just deleted in the example).
6. We just want to leave this as the default. In my example, it would look like this:
`First sector (34-2147483614, default = 19826688) or {+-}size{KMGTP}: 19826688`
7. We just want to leave this as the default. In my example, it would look like this:
`Last sector (19826688-2147483614, default = 2147483614) or {+-}size{KMGTP}: 2147483614`
8. Just leave this as-is and press ENTER without entering any values. Assuming you are using XFS, as this guide was written for, the default "Linux Filesystem" is what you want for XFS.
9. This will write the changes to the partition table making them reality instead of just staging the changes.
!!! warning "Point of No Return"
When you press `w <ENTER>` the changes will be written to disk, meaning there is no turning back unless you have full GuestVM backups with something like Veeam Backup & Replication. Be certain the first and last sector values are correctly configured before proceeding.
## Detect the New Partition Sizes
At this point, the operating system wont detect the changes without a reboot, so we are going to force the operating system to detect them immediately with the following commands to avoid a reboot.
``` sh
sudo partprobe
sudo partx -u /dev/<diskNumber>
sudo xfs_growfs /
```
## Validate Storage Expansion
At this point, you can leverage `lsblk` or `df -h` to determine if the usable storage space was successfully increased or not. In this example, you can see that I increased my storage space from 512GB to 1TB.
!!! example
`lsblk | grep "sda4"`
```
└─sda4 8:4 0 1014.5G 0 part /
```
`df -h | grep "sda4"`
```
/dev/sda4 1015G 145G 871G 15% /
```