ZPool 备忘单

📦 ZFS Pool Basics

# Create a new pool zpool create mypool /dev/sdX # List all pools zpool list # Show detailed pool status zpool status mypool # Add a new vdev to an existing pool zpool add mypool /dev/sdY # Destroy a pool (⚠️ irreversible!) zpool destroy mypool # Export (unmount) a pool zpool export mypool # Import (mount) a pool zpool import mypool # Scrub a pool (check for errors) zpool scrub mypool # Check scrub status zpool status mypool 

🛠️ Vdev Types & RAID Equivalents

⚠️ ZFS pools are built from one or more vdevs. If any vdev fails, the entire pool fails—even if other vdevs are healthy.

📁 Dataset & Filesystem Management

# Create a dataset zfs create mypool/mydataset # List datasets zfs list # Set quota on a dataset zfs set quota=10G mypool/mydataset # Snapshot a dataset zfs snapshot mypool/mydataset@snap1 # Roll back to a snapshot zfs rollback mypool/mydataset@snap1 # Send snapshot to another system zfs send mypool/mydataset@snap1 | ssh user@host zfs receive backup/mirror 

🧮 Tips & Best Practices

• ✅ Always use whole disks (not partitions) for ZFS.
• ✅ Use ECC RAM if possible—ZFS relies heavily on memory integrity.
• ✅ Avoid mixing vdev types in a single pool.
• ✅ Use zpool scrub regularly to detect and fix silent corruption.
• ✅ Remember: redundancy is at the vdev level, not the pool level.