Step 1. Connect to SynetoOS appliance via SSH as admin

ssh admin@<your_ip_address_or_hostname>

Step 2. Become Super User

sudo su

Step 3. Create snapdestroy file

vi /tmp/snapdestroy

IMPORTANT
Make sure to copy and paste the exact lines below.

#!/usr/bin/env python3
import subprocess

def list_snapshots(pool, date):
    command = f"zfs list -H -t snapshot -o name -r {pool}/syn-volumes | grep {date}"
    result = subprocess.run(command, shell=True, capture_output=True, text=True)
    if result.returncode == 0:
        snapshots = result.stdout.strip().split('\n')
        return snapshots
    else:
        print(f"Error listing snapshots for pool '{pool}' and date '{date}': {result.stderr}")
        return []

def delete_snapshots(pool, snapshots):
    for snapshot in snapshots:
        delete_command = f"zfs destroy {snapshot}"
        result = subprocess.run(delete_command, shell=True)
        if result.returncode == 0:
            print(f"Snapshot '{snapshot}' deleted successfully.")
        else:
            print(f"Error deleting snapshot '{snapshot}': {result.stderr}")

if __name__ == "__main__":
    import sys

    if len(sys.argv) != 3:
        print("Usage: python script.py <pool> <date>")
        sys.exit(1)

    pool = sys.argv[1]
    date = sys.argv[2]

    snapshots = list_snapshots(pool, date)
    if not snapshots:
        print(f"No snapshots found for date '{date}' in pool '{pool}'.")
        sys.exit(0)

    print("Snapshots found for deletion:")
    for snapshot in snapshots:
        print(snapshot)

    confirmation = input(f"Delete these {len(snapshots)} snapshots? (yes/no): ")
    if confirmation.lower() == "yes":
        delete_snapshots(pool, snapshots)
    else:
        print("Snapshots not deleted.")

 

Save and EXIT

:wq

Step 4. Give permissions to snapdestroy file

chmod +x /tmp/snapdestroy

Step 5. Delete the snapshots

Delete all snapshots for a specific year (replace <pool_name> and <year> with the correct pool name)

/tmp/snapdestroy <pool_name> <year>

EXAMPLE

/tmp/snapdestroy mypoolname 2023

NOTE
The system will ask for confirmation to delete snapshots before proceeding.

Delete all snapshots for a specific month (replace <pool_name> and <year-month> with the correct pool name)

/tmp/snapdestroy <pool_name> <year-month>

EXAMPLE

/tmp/snapdestroy mypoolname 2024-01

NOTE
The system will ask for confirmation to delete snapshots before proceeding.

Step 6. Delete the snapdestroy file after removing the snapshots

rm /tmp/snapdestroy