Multi Replace; Multi Replace Deferred Update; Raidz Mirror; Raidz/Mirror Deferred Update - Oracle Sun ZFS Service Manual

Multi Replace

Multi Replace Deferred Update

This deferred update allows importing a pool with a missing log device and corrects the
behavior of the system when a device that is being resilvered is itself removed or replaced. These
fixes rely on a ZFS pool upgrade provided by this update. Before this update has been applied,
the system will be unable to import pools with missing log devices and will not correctly handle
replacement of resilvering devices (see CR 6782540).
Applying this update is equivalent to upgrading the on-disk ZFS pool to version 28.

RAIDZ Mirror

RAIDZ/Mirror Deferred Update

This deferred update improves both latency and throughput on several important workloads.
These improvements rely on a ZFS pool upgrade provided by this update. Applying this update
is equivalent to upgrading the on-disk ZFS pool to version 29.

Optional Child Dir

Introduction

This deferred update improves list retrieval performance and replication deletion performance
by improving dataset rename speed. These improvements rely on a ZFS pool upgrade provided
by this update. Before this update has been applied, the system will be able to retrieve lists and
delete replications, but will do so using the old, much slower, recursive rename code. Applying
this update is equivalent to upgrading the on-disk ZFS pool to version 31.
Chapter 3 • System Maintenance
Optional Child Dir
129