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#!/usr/bin/python
# Copyright (C) International Business Machines Corp., 2005
# Copyright (C) flonatel GmbH & Co. KG, 2009
# Authors: Murillo F. Bernardes <mfb@br.ibm.com>
# Andreas Florath <xen@flonatel.org>
# Block devices are by random attached to and detached from the domU.
import re
import random
from xen.util import blkif
from os.path import basename
from XmTestLib import *
from XmTestLib.block_utils import *
def availableRamdisks():
i=0
while os.access("/dev/ram%d" % i, os.F_OK):
i+=1
return i-1
def attach(phy, devname):
block_attach(domain, "phy:%s" % phy, devname)
run = console.runCmd("cat /proc/partitions")
if not re.search(basename(devname), run["output"]):
return -2, "Failed to attach block device: " \
+ "/proc/partitions does not show that!"
return 0, None
def detach(devname):
block_detach(domain, devname)
run = console.runCmd("cat /proc/partitions")
if re.search(basename(devname), run["output"]):
return -2, "Failed to detach block device: " \
+ "/proc/partitions still showing that!"
return 0, None
if ENABLE_HVM_SUPPORT:
SKIP("Block-attach not supported for HVM domains")
# Create a domain (default XmTestDomain, with our ramdisk)
domain = XmTestDomain()
try:
console = domain.start()
except DomainError, e:
if verbose:
print "Failed to create test domain because:"
print e.extra
FAIL(str(e))
try:
console.setHistorySaveCmds(value=True)
# Run 'ls'
run = console.runCmd("ls")
except ConsoleError, e:
saveLog(console.getHistory())
FAIL(str(e))
ramdisk_cnt = availableRamdisks()
detached = range(0, ramdisk_cnt)
attached = []
def attach_device():
n = random.choice(detached)
status, msg = attach("ram%d" % n, "xvda%d" % n)
if status:
FAIL(msg)
detached.remove(n)
attached.append(n)
def detach_device():
n = random.choice(attached)
status, msg = detach("xvda%d" % n)
if status:
FAIL(msg)
detached.append(n)
attached.append(n)
# First attach some
for i in xrange(0, ramdisk_cnt/2):
attach_device()
for i in xrange(0, ramdisk_cnt*5):
op = random.randint(0,1) # 1 = attach, 0 = detach
if op:
detach_device()
else:
attach_device()
# Close the console
domain.closeConsole()
# Stop the domain (nice shutdown)
domain.stop()
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