democratic-csi PV parent dataset migration

0-list-pvs.sh

#!/bin/bash
storageclass_name="..."
kubectl get pvc -A --output=json | jq -r '.items[] | select(.spec.storageClassName == "${storageclass_name}") | [.metadata.namespace, .metadata.name, .spec.volumeName] | @tsv' > pvc-list.txt

1-migrate-datasets.sh

#!/bin/bash

# Set the source and destination ZFS datasets
source_dataset="..."
destination_dataset="..."

# Source snapshot name, created with a command like
# zfs snap -r <source_pool>@<snapshot_name>
snapshot_name="..." 

# Read each line from the input file
while IFS=$'\t' read -r namespace pv pvc; do
    # Extract relevant parts from the input line
    namespace="${namespace// /}"   # Trim any extra spaces
    pvc="${pvc// /}"               # Trim any extra spaces
    pv="${pv// /}"               # Trim any extra spaces

    # Formulate the ZFS send and receive command
    send_command="zfs send ${source_dataset}/${pvc}@${snapshot_name}"
    recv_command="zfs recv ${destination_dataset}/${namespace}-${pv}"

    # Execute the ZFS send | ZFS recv command
    echo "Executing: $send_command | $recv_command"
    # Uncomment to run the migration
    # $send_command | $recv_command

    # Check the exit status of the previous command
    if [ $? -ne 0 ]; then
        echo "Error executing ZFS send | recv for ${pvc}"
    fi

done < pvc-list.txt