Difference between revisions of "Deleting Linux Swap Partition on KVM"
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| − | + | This page is in reference to the fact that cloud-init KVM templates cannot have any disk partition after the root "/" partition. In many cases, the Linux swap partition is after the root partition therefore it needs to be deleted as expected by cloud-init. | |
| + | |||
| + | The root partition is important because cloud-init can grow the partition automatically from a template clone but only if it is the last partition on a disk. | ||
| + | |||
| + | == Steps == | ||
| + | |||
| + | * Delete the <code>swap</code> line from /etc/fstab | ||
| + | * Run <code>swapoff -a</code> | ||
| + | * Use fdisk on the disk in question, this is usually /dev/sda <code>fdisk /dev/sda</code> | ||
| + | * Execute the following commands in fdisk: | ||
| + | ** p (get partition number of the Linux swap partition) | ||
| + | ** d (delete the swap partition by number) | ||
| + | ** d (delete any other system partition; there should only be 1 partition left for "/") | ||
| + | ** w (write the new partition table) | ||
| + | * Do one of the following to resize the file system to the maximum size: | ||
| + | ** <code>resize2fs /dev/sdaX</code> where X is the number of the remaining partition | ||
| + | ** <code>growroot /dev/sda X</code> where X is the number of the remaining partition | ||
| + | ** If cloud-init is installed with growroot support, simply <code>reboot</code> | ||
| + | |||
| + | == Notes == | ||
| + | |||
| + | * The Linux swap partition is the main focus here, but any partition located after the root "/" partition needs to be deleted for cloud-init growroot to work correctly. These steps can be adapted to any other partition type as needed. | ||
Latest revision as of 00:06, 26 July 2020
This page is in reference to the fact that cloud-init KVM templates cannot have any disk partition after the root "/" partition. In many cases, the Linux swap partition is after the root partition therefore it needs to be deleted as expected by cloud-init.
The root partition is important because cloud-init can grow the partition automatically from a template clone but only if it is the last partition on a disk.
Steps
- Delete the
swapline from /etc/fstab - Run
swapoff -a - Use fdisk on the disk in question, this is usually /dev/sda
fdisk /dev/sda - Execute the following commands in fdisk:
- p (get partition number of the Linux swap partition)
- d (delete the swap partition by number)
- d (delete any other system partition; there should only be 1 partition left for "/")
- w (write the new partition table)
- Do one of the following to resize the file system to the maximum size:
resize2fs /dev/sdaXwhere X is the number of the remaining partitiongrowroot /dev/sda Xwhere X is the number of the remaining partition- If cloud-init is installed with growroot support, simply
reboot
Notes
- The Linux swap partition is the main focus here, but any partition located after the root "/" partition needs to be deleted for cloud-init growroot to work correctly. These steps can be adapted to any other partition type as needed.