Snapshots

ZFS snapshots provide instant, space-efficient point-in-time copies of filesystems and volumes. Use them for backup, recovery, and data protection.

Access

Navigate to Snapshots in the Web UI sidebar.

View Snapshots

The Snapshots panel lists all ZFS filesystems and ZVOLs with:

Volume name and device path
Size
Last snapshot timestamp
Snapshot count

Use view filters to show: all volumes, active only (have snapshots), or inactive only (no snapshots).

Create a Manual Snapshot

Select a volume by checking its checkbox
Click New
Accept the default name or enter a custom one
Click OK

Schedule Automatic Snapshots

Select a volume
Click Schedule
Configure the snapshot policy:

Field	Description
Interval	Frequency: `frequent` (minutes), `hourly`, `daily`, or `monthly`
Period	Number of intervals between snapshots
Keep	Number of snapshots to retain (older ones are automatically deleted)
Offset	Offset within the interval period

Click Save

Example Policies

Interval	Period	Keep	Result
frequent	15	4	Every 15 minutes, keep last 4 (1 hour of coverage)
hourly	1	24	Every hour, keep last 24 (1 day of coverage)
daily	1	7	Every day, keep last 7 (1 week of coverage)
monthly	1	12	Every month, keep last 12 (1 year of coverage)

Delete Snapshots

Select a volume or specific snapshot
Click Delete

Rollback a Snapshot

Rollback reverts a filesystem to the state captured in a snapshot. All changes made after the snapshot are lost.

Copy a Snapshot

Copy a snapshot to another volume or device for offline backup or migration.

CLI

# Create a snapshot
mayacli create snapshot snapshotof=tank/data

# Create a snapshot with a specific size (for LVM snapshots)
mayacli create snapshot snapshotof=testvol size=20G

# Show all snapshots
mayacli show snapshot

# Show snapshots for a specific volume
mayacli show snapshot tank/data

# Delete a snapshot
mayacli delete snapshot tank/data@snap-2024-01-15

# Delete all snapshots for a volume
mayacli delete snapshot tank/data

# Set a snapshot schedule (daily, keep 7)
mayacli set snapshot tank/data interval=daily period=1 keep=7

# Set a frequent snapshot schedule (every 15 minutes, keep 4)
mayacli set snapshot tank/data interval=frequent period=15 keep=4

# Set a monthly schedule
mayacli set snapshot tank/data interval=monthly period=1 keep=12

# Disable scheduled snapshots
mayacli set snapshot tank/data interval=none

# Rollback to a snapshot
mayacli snapshot rollback tank/data@snap-2024-01-15

# Copy a snapshot to another volume
mayacli snapshot copy tank/data@snap-2024-01-15 backup/data

# Start snapshot replication
mayacli snapshot start tank/data

See CLI Guide for the full command reference.