zfs-upgrade(8) manual page

zfs upgrade Displays a list of file systems that are not the most recent version.

zfs upgrade -v Displays a list of currently supported file system versions.

zfs upgrade [-r] [-V version] -a | filesystem Upgrades file systems to a new on-disk version. Once this is done, the file systems will no longer be accessible on systems running older versions of ZFS. zfs streams generated from new snapshots of these file systems cannot be accessed on systems running older versions of ZFS.

In general, the file system version is independent of the pool version. See zpool-features(7) for information on features of ZFS storage pools.

In some cases, the file system version and the pool version are interrelated and the pool version must be upgraded before the file system version can be upgraded.

-V version
	Upgrade to version. If not specified, upgrade to the most recent version. This option can only be used to increase the version number, and only up to the most recent version supported by this version of ZFS.
-a	Upgrade all file systems on all imported pools.
filesystem
	Upgrade the specified file system.
-r	Upgrade the specified file system and all descendent file systems.

“	"I liken starting one's computing career with Unix, say as an undergraduate, to being born in East Africa. It is intolerably hot, your body is covered with lice and flies, you are malnourished and you suffer from numerous curable diseases. But, as far as young East Africans can tell, this is simply the natural condition and they live within it. By the time they find out differently, it is too late. They already think that the writing of shell scripts is a natural act."	”
— Ken Pier, Xerox PARC

Manual Pages — ZFS-UPGRADE

NAME

CONTENTS

SYNOPSIS

DESCRIPTION

SEE ALSO