ZFS Update

Newer versions of ZFS introduce bug fixes, support for newer kernels, and in some instances, introduce new storage pool features.

Portage will update these packages in the normal fashion through emerge --update @world. Important additional steps will be required for Funtoo Linux installed on a ZFS storage pool.

* The ZFS ebuilds are sys-fs/zfs, sys-fs/zfs-kmod and sys-kernel/spl.

   Important

As best practice, it is strongly recommended that all users backup their data on a regular basis - irrespective of the file system being used. This could be particularly important should something go wrong while modifying or updating a live file system.

Funtoo installed on ZFS

   Warning

work in progress

GRUB vs UEFI vs static kernels

(Optional) Update GRUB?

review installed GRUB > recommend to update first if old version (new sys-boot/grub has better zfs support)

Identify existing ZFS version

Details...

If upgrading from ZFS 0.6.4.2 or newer

Normal upgrade

• Merge new zfs
• Update initramfs
• grub-mkconfig
• reboot

If upgrading from ZFS 0.6.3.x or older

Details...

• as above
• warning about features
• zpool status, zpool upgrade rpool

root # zpool status
  pool: rpool
 state: ONLINE
status: Some supported features are not enabled on the pool. The pool can
	still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
	the pool may no longer be accessible by software that does not support
	the features. See zpool-features(5) for details.
  scan: none requested
config:

	NAME                                             STATE     READ WRITE CKSUM
	rpool                                            ONLINE       0     0     0
	  ata-Samsung_SSD_840_EVO_120GB_123456789ABCDEF  ONLINE       0     0     0

errors: No known data errors