zfs cheat sheet Solaris 11

The ZFS file system is a file system that fundamentally changes the way file systems are administered, with features and benefits not found in other file systems available today. ZFS is robust, scalable, and easy to administer.ZFS uses the concept of storage pools to manage physical storage, ZFS eliminates volume management altogether. Instead of forcing you to create virtualized volumes, ZFS aggregates devices into a storage pool.File systems are no longer constrained to individual devices, allowing them to share disk space with all file systems in the pool. You no longer need to predetermine the size of a file system, as file systems grow automatically within the disk space allocated to the storage pool. When new storage is added, all file systems within the pool can immediately use the additional disk space without additional work

zpool commands	Description
zpool create testpool c0t0d0	Create simple pool named testpool with single disk creating default mount point as poolname(/testpool) OPTIONAL: -n do a dry run on pool creation -f force creation of the pool
zpool create testpool mirror c0t0d0 c0t0d1	Create testpool mirroring c0t0d0 with c0t0d1 creating default mount point as poolname(/testpool)
zpool create -m /mypool testpool c0t0d0	Create pool with different mount point than default
zpool create testpool raidz c2t1d0 c2t2d0 c2t3d0	Create RAID-Z testpool
zpool add testpool raidz c2t4d0 c2t5d0 c2t6d0	Add RAID-Z disks to testpool
zpool create testpool raidz1 c2t1d0 c2t2d0 c2t3d0 c2t4d0 c2t5d0 c2t6d0	Create RAIDZ-1 testpool
zpool create testpool raidz2 c2t1d0 c2t2d0 c2t3d0 c2t4d0 c2t5d0 c2t6d0	Create RAIDZ-2 testpool
zpool add testpool spare c2t6d0	Add spare device to the testpool
zpool create testpool mirror c2t1d0 c2t2d0 mirror c2t3d0 c2t4d0	Disk c2t1d0 mirrored with c2t2d0 & c2t3d0 mirrored with c2t4d0
zpool remove testpool c2t6d0	Removes hot spares and cache disks
zpool detach testpool c2t4d0	Detach the mirror from the pool
zpool clear testpool c2t4d0	Clears specific disk fault
zpool replace testpool c3t4d0	Replace disk like disk
zpool replace testpool c3t4d0 c3t5d0	Replace one disk with another disk
zpool export testpool	Export the pool from the system
zpool import testpool	Imports specific pool
zpool import -f -D -d /testpool testpool	Import destroyed testpool
zpool import testpool newtestpool	Import a pool originally named testpool under new name newtestpool
zpool import 88746667466648	Import pool using ID
zpool offline testpool c2t4d0	Offline the disk in the pool Note: zpool offline testpool -t c2t4d0 will offline temporary
zpool upgrade -a	upgrade all pools
zpool upgrade testpool	Upgrade specific pool
zpool status -x	Health status of all pools
zpool status testpool	Status of pool in verbose mode
zpool get all testpool	Lists all the properties of the storage pool
zpool set autoexpand=on testpool	Set the parameter value on the storage pool Note: zpool get all testpool gives you all the properties on which it could be used to set value
zpool list	Lists all pools
zpool list -o name,size,altroot	show properties of the pool
zpool history	Displays history of the pool Note: Once the pool is removed, history is removed.
zpool iostat 2 2	Display ZFS I/O stastics
zpool destroy testpool	Removes the storage pool

zfs commands	Description
zfs list	Lists the ZFS file system’s zfs list -t filesystem zfs list -t snapshot zfs list -t volume
zfs create testpool/filesystem1	Creates ZFS filesystem on testpool storage
zfs create -o mountpoint=/filesystem1 testpool/filesystem1	Different mountpoint created after ZFS creation
zfs rename testpool/filesystem1 testpool/filesystem2	Renames the ZFS filesystem
zfs unmount testpool	unmount the storagepool
zfs mount testpool	mounts the storagepool
NFS exports in ZFS	zfs share testpool – shares the file system for export zfs set share.nfs=on testpool – make the share persistent across reboot svcs -a nfs/server – NFS server should be online cat /etc/dfs/dfstab – Exported entry in the file showmount -e – storage pool has been exported
zfs unshare testpool	Remove NFS exports
zfs destroy -r testpool	Destroy storage pool and all datasets under it
zfs set quota=1G testpool/filesystem1	set quota of 1GB on the filesystem1
zfs set reservations=1G testpool/filesystem1	set reservation of 1GB on the filesystem1
zfs set mountpoint=legacy testpool/filesystem1	Disable ZFS auto mounting and enable through /etc/vsftab
zfs unmount testpool/filesystem1	unmounts ZFS filesystem1 in testpool
zfs mount testpool/filesystem1	mounts ZFS filestystem1 in testpool
zfs mount -a	mounts all the ZFS filesystems
zfs snapshot testpool/filesystem1@friday	Creates a snapshot of the filesystem1
zfs hold keep testpool/filesystem1@friday	Holds existing snapshot & attempts to destroy using zfs destroy will fail
zfs rename testpool/filesystem1@friday FRIDAY	Rename the snapshots Note: snapshots must exists in the same pools
zfs diff testpool/filesystem1@friday testpool/filesystem1@friday1	Identify the difference between two snapshots
zfs holds testpool/filesystem1@friday	Displays the list of snapshots help
zfs rollback -r testpool/fileystem1@friday	Roll back yesterday snapshot recursively
zfs destroy testpool/fileystem1@thursday	Destroy snapshot created yesterday
zfs clone testpool/filesystem1@friday testpool/clones/friday	Clone was created on the same snapshot Note: Cannot create clone of a filesystem in a pool that is different from where original snapshot resides.
zfs destroy testpool/clones/Friday	Destroy the clone