Oracle Solaris ZFS File System (MOSC)

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You have been warned: Upgrading rpool

in Oracle Solaris ZFS File System (MOSC)

In the past customers painted themselves into a corner, when they did a rather large jump with their OS versions, upgraded their app as well, upgraded the zpool afterwards to get a new feature in ZFS and then tried to get back to their old boot environment with the old OS version. It didn’t worked.

The reason is simple: Solaris can only import pools that have a version number equal or less to the one that’s running on the system. Solaris can’t import a zpool with a higher version number. So you can import for example a

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