def change_iface_bridge(ifname, new_bridge, ovs=None):
"""
Change bridge on which interface was added.
@param ifname: Iface name or Iface struct.
@param new_bridge: Name of new bridge.
"""
if ovs is None:
ovs = __ovs
br_manager_new = find_bridge_manager(new_bridge, ovs)
if br_manager_new is None:
raise BRNotExistError(new_bridge, "")
if type(ifname) is str:
(br_manager_old, br_old) = find_current_bridge(ifname, ovs)
if not br_manager_old is None:
br_manager_old.del_port(br_old, ifname)
br_manager_new.add_port(new_bridge, ifname)
elif issubclass(type(ifname), VirtIface):
br_manager_old = find_bridge_manager(ifname.netdst, ovs)
if not br_manager_old is None:
br_manager_old.del_port(ifname.netdst, ifname.ifname)
br_manager_new.add_port(new_bridge, ifname.ifname)
ifname.netdst = new_bridge
else:
raise error.AutotestError("Network interface %s is wrong type %s." %
(ifname, new_bridge))
def setup(self,
tarball='oprofile-0.9.4.tar.bz2',
local=None,
*args,
**dargs):
if local is True:
return
try:
self.tarball = utils.unmap_url(self.bindir, tarball, self.tmpdir)
utils.extract_tarball_to_dir(self.tarball, self.srcdir)
os.chdir(self.srcdir)
patch = os.path.join(self.bindir, "oprofile-69455.patch")
utils.system('patch -p1 < %s' % patch)
utils.configure('--with-kernel-support --prefix=' + self.srcdir)
utils.make('-j %d' % utils.count_cpus())
utils.make('install')
except Exception:
# Build from source failed.
# But maybe can still use the local copy
local_opcontrol = os.path.exists('/usr/bin/opcontrol')
local_opreport = os.path.exists('/usr/bin/opreport')
if local is False or not local_opcontrol or not local_opreport:
raise error.AutotestError('No oprofile available')
else:
# if we managed to build, try again to pick binaries
self._pick_binaries(True)
def _validate_args(args, dargs, *funcs):
"""Verify that arguments are appropriate for at least one callable.
Given a list of callables as additional parameters, verify that
the proposed keyword arguments in dargs will each be accepted by at least
one of the callables.
NOTE: args is currently not supported and must be empty.
Args:
args: A tuple of proposed positional arguments.
dargs: A dictionary of proposed keyword arguments.
*funcs: Callables to be searched for acceptance of args and dargs.
Raises:
error.AutotestError: if an arg won't be accepted by any of *funcs.
"""
all_co_flags = 0
all_varnames = ()
for func in funcs:
all_co_flags |= func.func_code.co_flags
all_varnames += func.func_code.co_varnames[:func.func_code.co_argcount]
# Check if given args belongs to at least one of the methods below.
if len(args) > 0:
# Current implementation doesn't allow the use of args.
raise error.TestError('Unnamed arguments not accepted. Please '
'call job.run_test with named args only')
# Check if given dargs belongs to at least one of the methods below.
if len(dargs) > 0:
if not all_co_flags & 0x08:
# no func accepts *dargs, so:
for param in dargs:
if not param in all_varnames:
raise error.AutotestError('Unknown parameter: %s' % param)
def __init__(self, file_img, file_size):
"""
Creates a virtual partition, keeping record of the device created
under /dev/mapper (device attribute) so test writers can use it
on their filesystem tests.
:param file_img: Path to the desired disk image file.
:param file_size: Size of the desired image in Bytes.
"""
logging.debug('Sanity check before attempting to create virtual '
'partition')
try:
os_dep.commands('sfdisk', 'losetup', 'kpartx')
except ValueError as e:
e_msg = 'Unable to create virtual partition: %s' % e
raise error.AutotestError(e_msg)
logging.debug('Creating virtual partition')
self.img = self._create_disk_img(file_img, file_size)
self.loop = self._attach_img_loop(self.img)
self._create_single_partition(self.loop)
self.device = self._create_entries_partition(self.loop)
logging.debug('Virtual partition successfully created')
logging.debug('Image disk: %s', self.img)
logging.debug('Loopback device: %s', self.loop)
logging.debug('Device path: %s', self.device)
def initialize(self):
self.job.require_gcc()
try:
utils.system('grep -iq " profile=" /proc/cmdline')
except error.CmdError:
raise error.AutotestError('readprofile not enabled')
self.cmd = self.srcdir + '/sys-utils/readprofile'
def _remove_disk_img(self):
"""
Removes the disk image.
"""
logging.debug('Removing disk image %s', self.img)
try:
os.remove(self.img)
except Exception:
e_msg = 'Error removing image file %s' % self.img
raise error.AutotestError(e_msg)
def convert_version_to_int(version):
"""
:param version: (int) Converted from version string 1.4.0 => int 140
"""
if (isinstance(version, int)):
return version
try:
int_ver = int(version.replace(".", ""))
except:
raise error.AutotestError("Wrong version format '%s'" % (version))
return int_ver
def convert_version_to_int(version):
"""
:param version: (int) Converted from version string 1.4.0 => int 140
"""
if isinstance(version, int):
return version
try:
a = re.findall('^(\d+)\.?(\d+)\.?(\d+)\-?', version)[0]
int_ver = ''.join(a)
except:
raise error.AutotestError("Wrong version format '%s'" % version)
return int_ver
def create_container_with_mbytes_and_specific_cpus(name,
mbytes,
cpus=None,
root=SUPER_ROOT,
io={},
move_in=True,
timeout=0):
"""\
Create a cpuset container and move job's current pid into it
Allocate the list "cpus" of cpus to that container
name = arbitrary string tag
mbytes = reqested memory for job in megabytes
cpus = list of cpu indicies to associate with the cpuset
defaults to all cpus avail with given root
root = the parent cpuset to nest this new set within
'': unnested top-level container
io = arguments for proportional IO containers
move_in = True: Move current process into the new container now.
timeout = must be 0: persist until explicitly deleted.
"""
need_mem_containers()
if not container_exists(root):
raise error.AutotestError('Parent container "%s" does not exist' %
root)
if cpus is None:
# default to biggest container we can make under root
cpus = get_cpus(root)
else:
cpus = set(cpus) # interface uses list
if not cpus:
raise error.AutotestError('Creating container with no cpus')
name = os.path.join(root, name) # path relative to super_root
if os.path.exists(full_path(name)):
raise error.AutotestError('Container %s already exists' % name)
create_container_directly(name, mbytes, cpus)
set_io_controls(name, **io)
if move_in:
move_self_into_container(name)
return name
def _detach_img_loop(self):
"""
Detaches the image file from the loopback device.
"""
logging.debug('Detaching image %s from loop device %s', self.img,
self.loop)
try:
cmd = 'losetup -d %s' % self.loop
utils.run(cmd)
except error.CmdError, e:
e_msg = ('Error detaching image %s from loop device %s: %s' %
(self.img, self.loop, e))
raise error.AutotestError(e_msg)
def _remove_entries_partition(self):
"""
Removes the entries under /dev/mapper for the partition associated
to the loopback device.
"""
logging.debug('Removing the entry on /dev/mapper for %s loop dev',
self.loop)
try:
cmd = 'kpartx -d %s' % self.loop
utils.run(cmd)
except error.CmdError, e:
e_msg = 'Error removing entries for loop %s: %s' % (self.loop, e)
raise error.AutotestError(e_msg)
def _create_disk_img(self, img_path, size):
"""
Creates a disk image using dd.
:param img_path: Path to the desired image file.
:param size: Size of the desired image in Bytes.
:return: Path of the image created.
"""
logging.debug('Creating disk image %s, size = %d Bytes', img_path, size)
try:
cmd = 'dd if=/dev/zero of=%s bs=1024 count=%d' % (img_path, size)
utils.run(cmd)
except error.CmdError, e:
e_msg = 'Error creating disk image %s: %s' % (img_path, e)
raise error.AutotestError(e_msg)
def __init__(self, file_img, file_size):
"""
Creates a virtual partition, keeping record of the device created
under /dev/mapper (device attribute) so test writers can use it
on their filesystem tests.
@param file_img: Path to the desired disk image file.
@param file_size: Size of the desired image in Bytes.
"""
logging.debug('Sanity check before attempting to create virtual '
'partition')
try:
os_dep.commands('sfdisk', 'losetup', 'kpartx')
except ValueError, e:
e_msg = 'Unable to create virtual partition: %s' % e
raise error.AutotestError(e_msg)
def _create_single_partition(self, loop_path):
"""
Creates a single partition encompassing the whole 'disk' using cfdisk.
@param loop_path: Path to the loopback device.
"""
logging.debug('Creating single partition on %s', loop_path)
try:
single_part_cmd = '0,,c\n'
sfdisk_file_path = '/tmp/create_partition.sfdisk'
sfdisk_cmd_file = open(sfdisk_file_path, 'w')
sfdisk_cmd_file.write(single_part_cmd)
sfdisk_cmd_file.close()
utils.run('sfdisk %s < %s' % (loop_path, sfdisk_file_path))
except error.CmdError, e:
e_msg = 'Error partitioning device %s: %s' % (loop_path, e)
raise error.AutotestError(e_msg)
def _attach_img_loop(self, img_path):
"""
Attaches a file image to a loopback device using losetup.
@param img_path: Path of the image file that will be attached to a
loopback device
@returns: Path of the loopback device associated.
"""
logging.debug('Attaching image %s to a loop device', img_path)
try:
cmd = 'losetup -f'
loop_path = utils.system_output(cmd)
cmd = 'losetup -f %s' % img_path
utils.run(cmd)
except error.CmdError, e:
e_msg = ('Error attaching image %s to a loop device: %s' %
(img_path, e))
raise error.AutotestError(e_msg)
def _create_entries_partition(self, loop_path):
"""
Takes the newly created partition table on the loopback device and
makes all its devices available under /dev/mapper. As we previously
have partitioned it using a single partition, only one partition
will be returned.
@param loop_path: Path to the loopback device.
"""
logging.debug('Creating entries under /dev/mapper for %s loop dev',
loop_path)
try:
cmd = 'kpartx -a %s' % loop_path
utils.run(cmd)
l_cmd = 'kpartx -l %s | cut -f1 -d " "' % loop_path
device = utils.system_output(l_cmd)
except error.CmdError, e:
e_msg = 'Error creating entries for %s: %s' % (loop_path, e)
raise error.AutotestError(e_msg)
def set_io_controls(container_name,
disks=[],
ioprio_classes=[PROPIO_NORMAL],
io_shares=[95],
io_limits=[0]):
# set the propio controls for one container, for selected disks
# writing directly to /dev/cgroup/container_name/io.io_service_level
# without using containerd or container.py
# See wiki ProportionalIOScheduler for definitions
# ioprio_classes: list of service classes, one per disk
# using numeric propio service classes as used by kernel API, namely
# 1: RT, Real Time, aka PROPIO_PRIO
# 2: BE, Best Effort, aka PROPIO_NORMAL
# 3: PROPIO_IDLE
# io_shares: list of disk-time-fractions, one per disk,
# as percentage integer 0..100
# io_limits: list of limit on/off, one per disk
# 0: no limit, shares use of other containers' unused disk time
# 1: limited, container's use of disk time is capped to given DTF
# ioprio_classes defaults to best-effort
# io_limit defaults to no limit, use slack time
if not disks: # defaults to all drives
disks = all_drive_names()
io_shares = [io_shares[0]] * len(disks)
ioprio_classes = [ioprio_classes[0]] * len(disks)
io_limits = [io_limits[0]] * len(disks)
if not (len(disks) == len(ioprio_classes) and len(disks) == len(io_shares)
and len(disks) == len(io_limits)):
raise error.AutotestError('Unequal number of values for io controls')
service_level = io_attr(container_name, 'io_service_level')
if not os.path.exists(service_level):
return # kernel predates propio features
# or io cgroup is mounted separately from cpusets
disk_infos = []
for disk, ioclass, limit, share in zip(disks, ioprio_classes, io_limits,
io_shares):
parts = (disk, str(ioclass), str(limit), str(share))
disk_info = ' '.join(parts)
utils.write_one_line(service_level, disk_info)
disk_infos.append(disk_info)
logging.debug('set_io_controls of %s to %s', container_name,
', '.join(disk_infos))
def need_fake_numa():
discover_container_style()
if not fake_numa_containers:
raise error.AutotestError('fake=numa not enabled by latest reboot')
def need_mem_containers():
discover_container_style()
if not mem_isolation_on:
raise error.AutotestError('Mem-isolation containers not enabled '
'by latest reboot')
