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#!/usr/bin/python
# Copyright (C) International Business Machines Corp., 2006
# Author: Harry Butterworth <butterwo@uk.ibm.com>
# This test imports a ram disk device as a physical device into a domU.
# The domU initialises the ram disk with data from /dev/urandom and calculates
# the md5 checksum of the data (using tee as it is written so as to avoid
# reading it back from the device which might potentially mask problems).
# The domU is stopped and the md5 checksum of the data on the device is
# calculated by dom0. The test succeeds if the checksums match, indicating
# that all the data written by domU was sucessfully committed to the device.
import re
from XmTestLib import *
from XmTestLib.block_utils import *
if ENABLE_HVM_SUPPORT:
SKIP("Block-attach not supported for HVM domains")
domain = XmTestDomain()
try:
console = domain.start()
except DomainError, e:
FAIL(str(e))
console.setHistorySaveCmds(value=True)
block_attach(domain, "phy:ram1", "hda1")
console.setTimeout(120)
try:
run = console.runCmd("dd if=/dev/urandom bs=512 count=`cat /sys/block/hda1/size` | tee /dev/hda1 | md5sum")
except ConsoleError, e:
FAIL(str(e))
domU_md5sum_match = re.search(r"^[\dA-Fa-f]{32}", run["output"], re.M)
domain.closeConsole()
domain.stop()
s, o = traceCommand("md5sum /dev/ram1")
dom0_md5sum_match = re.search(r"^[\dA-Fa-f]{32}", o, re.M)
if domU_md5sum_match == None:
FAIL("Failed to get md5sum of data written in domU.")
if dom0_md5sum_match == None:
FAIL("Failed to get md5sum of data read back in dom0.")
if verbose:
print "md5sum domU:"
print domU_md5sum_match.group()
print "md5sum dom0:"
print dom0_md5sum_match.group()
if domU_md5sum_match.group() != dom0_md5sum_match.group():
FAIL("MISCOMPARE: data read in dom0 did not match data written by domU.")
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