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#!/usr/bin/python
# Copyright (C) International Business Machines Corp., 2005
# Author: Murillo F. Bernardes <mfb@br.ibm.com>
import re
import random
from xen.util import blkif
from os import path.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
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))
ramdisks = availableRamdisks()-1
print "ramdisks=%d" % ramdisks
i = 0
devices = []
while i < ramdisks or devices:
op = random.randint(0,1) # 1 = attach, 0 = detach
if (not devices or op) and i < ramdisks:
i += 1
devname = "/dev/xvda%d" % i
phy = "/dev/ram%d" % i
print "Attaching %s to %s" % (devname, phy)
status, msg = attach( phy, devname )
if status:
FAIL(msg)
else:
devices.append(devname)
elif devices:
devname = random.choice(devices)
devices.remove(devname)
print "Detaching %s" % devname
status, msg = detach(devname)
if status:
FAIL(msg)
# Close the console
domain.closeConsole()
# Stop the domain (nice shutdown)
domain.stop()
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