How to resize swap partition from CLI in SynetoOS 4

Written By Christian Castagna (Administrator)

Updated at June 17th, 2025

→ Applies to: SynetoOS 4.x

 

Step 1. Connect to SynetoOS appliance via SSH as admin

ssh admin@<your_ip_address_or_hostname>

 

Step 2. Remove bash_profile

rm ~admin/.bash_profile

After running the command, you need to perform logout and login again.

 

Step 3. Remove bash_profile

sudo su

 

Step 4. Check current swap size

zfs get volsize rpool/swap

 

Step 5. Unmount the swap

swap -d /dev/zvol/dsk/rpool/swap

 

Step 6. See that no actual swap is mounted

swap -l

 

Step 7. Set the swap size

zfs set volsize=16G rpool/swap

The command above set the swap to 16GB

 

Step 8. Mount the swap

swap -a /dev/zvol/dsk/rpool/swap

 

Step 9. See that the swap is mounted correctly

swap -l