Ass ability to move all datasets

README.md

@@ -1,7 +1,8 @@
 # ZFS Move Over SSH
 
-`zfs-move-over-ssh.sh` snapshots every ZFS filesystem at and beneath a source
-dataset, then sends each snapshot to a remote ZFS server over SSH.
+`zfs-move-over-ssh.sh` snapshots every ZFS filesystem in a source pool, then
+sends each snapshot to a remote ZFS server over SSH. A vdev is the underlying
+storage device; ZFS filesystems belong to a pool, so pass the pool name.
 
 For a source tree such as:
 
@@ -36,13 +37,13 @@ incremental sends or resume tokens.
 ## Usage
 
 ```bash
-bash zfs-move-over-ssh.sh [options] SOURCE_ROOT REMOTE_HOST DESTINATION_ROOT
+bash zfs-move-over-ssh.sh [options] SOURCE_POOL REMOTE_HOST DESTINATION_ROOT
 ```
 
 Example:
 
 ```bash
-bash zfs-move-over-ssh.sh tank/data root@new-server backup/data
+bash zfs-move-over-ssh.sh tank root@new-server backup/tank
 ```
 
 Use a non-standard SSH key or port when needed:
@@ -51,7 +52,7 @@ Use a non-standard SSH key or port when needed:
 bash zfs-move-over-ssh.sh \
   --identity-file ~/.ssh/zfs-migration \
   --ssh-port 2222 \
-  tank/data admin@new-server backup/data
+  tank admin@new-server backup/tank
 ```
 
 Options:
@@ -69,7 +70,7 @@ Options:
 1. Confirm the source datasets:
 
    ```bash
-   zfs list -r tank/data
+  zfs list -r tank
    ```
 
 2. Confirm remote privileged ZFS access:
@@ -81,19 +82,19 @@ Options:
 3. Preview the operation. Review every destination name in the output:
 
    ```bash
-   bash zfs-move-over-ssh.sh --dry-run tank/data admin@new-server backup/data
+  bash zfs-move-over-ssh.sh --dry-run tank admin@new-server backup/tank
    ```
 
 4. Run the migration:
 
    ```bash
-   bash zfs-move-over-ssh.sh tank/data admin@new-server backup/data
+  bash zfs-move-over-ssh.sh tank admin@new-server backup/tank
    ```
 
 5. Verify the received datasets and data before retiring the source:
 
    ```bash
-   ssh admin@new-server 'sudo zfs list -r backup/data'
+  ssh admin@new-server 'sudo zfs list -r backup/tank'
    ```
 
 ## Safety and Recovery

zfs-move-over-ssh.sh

@@ -5,13 +5,13 @@ set -Eeuo pipefail
 
 usage() {
     cat <<'EOF'
-Usage: zfs-move-over-ssh.sh [options] SOURCE_ROOT REMOTE_HOST DESTINATION_ROOT
+Usage: zfs-move-over-ssh.sh [options] SOURCE_POOL REMOTE_HOST DESTINATION_ROOT
 
-Create one snapshot for every filesystem under SOURCE_ROOT and send each one
-over SSH. Filesystems retain their relative paths below DESTINATION_ROOT.
+Create one snapshot for every filesystem in SOURCE_POOL and send each one over
+SSH. Filesystems retain their relative paths below DESTINATION_ROOT.
 
 Arguments:
-  SOURCE_ROOT       Source ZFS filesystem, for example: tank/data
+    SOURCE_POOL       Source ZFS pool, for example: tank
   REMOTE_HOST       SSH host, optionally user@host
   DESTINATION_ROOT  Existing or new destination ZFS filesystem, for example: backup/data
 
@@ -77,14 +77,15 @@ done
     exit 2
 }
 
-SOURCE_ROOT="$1"
+SOURCE_POOL="$1"
 REMOTE_HOST="$2"
 DESTINATION_ROOT="${3%/}"
 SNAPSHOT_NAME="move-$(date +%Y%m%d-%H%M%S)"
 
 command -v zfs >/dev/null || die "zfs command was not found"
+command -v zpool >/dev/null || die "zpool command was not found"
 command -v ssh >/dev/null || die "ssh command was not found"
-zfs list -H -o name -t filesystem "$SOURCE_ROOT" >/dev/null || die "source filesystem does not exist: $SOURCE_ROOT"
+zpool list -H -o name "$SOURCE_POOL" >/dev/null || die "source pool does not exist: $SOURCE_POOL"
 
 if ! $DRY_RUN; then
     ssh "${SSH_OPTIONS[@]}" "$REMOTE_HOST" 'sudo -n zfs list -H -o name -t filesystem >/dev/null' \
@@ -93,7 +94,7 @@ fi
 
 map_destination() {
     local filesystem="$1"
-    local relative_path="${filesystem#"$SOURCE_ROOT"}"
+    local relative_path="${filesystem#"$SOURCE_POOL"}"
     printf '%s%s\n' "$DESTINATION_ROOT" "$relative_path"
 }
 
@@ -107,8 +108,8 @@ run() {
     fi
 }
 
-mapfile -t FILESYSTEMS < <(zfs list -H -o name -t filesystem -r "$SOURCE_ROOT")
-((${#FILESYSTEMS[@]} > 0)) || die "no filesystems found below $SOURCE_ROOT"
+mapfile -t FILESYSTEMS < <(zfs list -H -o name -t filesystem -r "$SOURCE_POOL")
+((${#FILESYSTEMS[@]} > 0)) || die "no filesystems found in $SOURCE_POOL"
 
 printf 'Migration snapshot: %s\n' "$SNAPSHOT_NAME"
 for filesystem in "${FILESYSTEMS[@]}"; do