02-13-2014
You are not compressing anything in the described procedure.
Creating an intermediary file (hostname_rpool@001.snapshot1) is an unnecessary step, you could (and should) directly pipe the "zfs send" command to a "zfs receive" one.
You are destroying your USB file system by creating a zfs pool on the very same device. Assuming you have no free partition on your USB disk, You need to create a file based pool.
There are also specific options you need to use to import a root pool as otherwise, some of the properties, especially mount points, will collide with your current root pool.
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zdb(8) System Administration Commands zdb(8)
NAME
zdb - ZFS debugger
SYNOPSIS
zdb pool
DESCRIPTION
The zdb command is used by support engineers to diagnose failures and gather statistics. Since the ZFS file system is always consistent on
disk and is self-repairing, zdb should only be run under the direction by a support engineer.
If no arguments are specified, zdb, performs basic consistency checks on the pool and associated datasets, and report any problems
detected.
Any options supported by this command are internal to Sun and subject to change at any time.
EXIT STATUS
The following exit values are returned:
0 The pool is consistent.
1 An error was detected.
2 Invalid command line options were specified.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWzfsu |
+-----------------------------+-----------------------------+
|Interface Stability |Unstable |
+-----------------------------+-----------------------------+
SEE ALSO
zfs(8), zpool(8), attributes(5)
SunOS 5.11 31 Oct 2005 zdb(8)