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Manual Pages  — ZFSLOADER

NAME

zfsloader – kernel bootstrapping final stage

CONTENTS

DESCRIPTION

zfsloader is an extended variant of loader(8) with added support for booting from ZFS. This document describes only differences from loader(8).

ZFS FEATURES

zfsloader supports the following format for specifying ZFS filesystems which can be used wherever loader(8) refers to a device specification:

zfs:pool/filesystem:

where pool/filesystem is a ZFS filesystem name as described in zfs(8).

If /etc/fstab does not have an entry for the root filesystem and vfs.root.mountfrom is not set, but currdev refers to a ZFS filesystem, then zfsloader will instruct kernel to use that filesystem as the root filesystem.

ZFS COMMAND EXTENSIONS

lsdev [-v]
  Lists ZFS pools in addition to disks and partitions. Adding -v shows more ZFS pool details in a format that resembles zpool output.

lszfs filesystem
  A ZFS extended command that can be used to explore the ZFS filesystem hierarchy in a pool. Lists the immediate children of the filesystem. The filesystem hierarchy is rooted at a filesystem with the same name as the pool.

FILES

/boot/zfsloader
  zfsloader itself.

EXAMPLES

Set the default device used for loading a kernel from a ZFS filesystem:
set currdev=zfs:tank/ROOT/knowngood:

SEE ALSO

gptzfsboot(8), loader(8), zfs(8), zfsboot(8), zfsloader(8), zpool(8)

HISTORY

The zfsloader first appeared in FreeBSD 7.3 .

AUTHORS

This manual page was written by Andriy Gapon <avg@FreeBSD.org>.

ZFSLOADER (8) September 15, 2014

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