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#!/usr/bin/python
# Copyright (C) International Business Machines Corp., 2006
# Author: Harry Butterworth <butterwo@uk.ibm.com>
# This test initialises a ram disk in dom0 with data from /dev/urandom and
# then imports the ram disk device as a physical device into a domU. The md5
# checksum of the data in the ramdisk is calculated in dom0 and also
# calculated by the domU reading the data through the blk frontend and
# backend drivers. The test succeeds if the checksums match indicating that
# the domU successfully read all the correct data from 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)
traceCommand("cat /dev/urandom > /dev/ram1")
s, o = traceCommand("md5sum /dev/ram1")
dom0_md5sum_match = re.search(r"^[\dA-Fa-f]{32}", o, re.M)
block_attach(domain, "phy:ram1", "hda1")
try:
run = console.runCmd("md5sum /dev/hda1")
except ConsoleError, e:
FAIL(str(e))
domU_md5sum_match = re.search(r"^[\dA-Fa-f]{32}", run["output"], re.M)
domain.closeConsole()
domain.stop()
if dom0_md5sum_match == None:
FAIL("Failed to get md5sum of test ram disk in dom0.")
if domU_md5sum_match == None:
FAIL("Failed to get md5sum of test ram disk in domU.")
if verbose:
print "md5sum dom0:"
print dom0_md5sum_match.group()
print "md5sum domU:"
print domU_md5sum_match.group()
if dom0_md5sum_match.group() != domU_md5sum_match.group():
FAIL("MISCOMPARE: data read in domU did not match data provided by domO.")
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