def detect_disks(hw_lst):
"""Detect disks."""
names = diskinfo.disknames()
sizes = diskinfo.disksizes(names)
disks = [name for name, size in sizes.items() if size > 0]
hw_lst.append(('disk', 'logical', 'count', str(len(disks))))
for name in disks:
diskinfo.get_disk_info(name, sizes, hw_lst)
# nvme devices do not need standard cache mechanisms
if not name.startswith('nvme'):
diskinfo.get_disk_cache(name, hw_lst)
diskinfo.get_disk_id(name, hw_lst)
# smartctl support
# run only if smartctl command is there
if which("smartctl"):
if name.startswith('nvme'):
sys.stderr.write('Reading SMART for nvme\n')
smart_utils.read_smart_nvme(hw_lst, name)
else:
smart_utils.read_smart(hw_lst, "/dev/%s" % name)
else:
sys.stderr.write("Cannot find smartctl, exiting\n")
def detect_disks(hw_lst):
'Detect disks.'
names = diskinfo.disknames()
sizes = diskinfo.disksizes(names)
disks = [name for name, size in sizes.items() if size > 0]
hw_lst.append(('disk', 'logical', 'count', str(len(disks))))
for name in disks:
hw_lst.append(('disk', name, 'size', str(sizes[name])))
item_list = [
'device/vendor', 'device/model', 'device/rev',
'queue/optimal_io_size', 'queue/physical_block_size',
'queue/rotational'
]
for my_item in item_list:
try:
with open('/sys/block/%s/%s' % (name, my_item), 'r') as dev:
hw_lst.append(('disk', name, my_item.split('/')[1],
dev.readline().rstrip('\n').strip()))
except Exception as excpt:
sys.stderr.write('Failed at getting disk information '
'at /sys/block/%s/device/%s: %s\n' %
(name, my_item, str(excpt)))
item_list = ['WCE', 'RCD']
item_def = {'WCE': 'Write Cache Enable', 'RCD': 'Read Cache Disable'}
for my_item in item_list:
sdparm_cmd = Popen("sdparm -q --get=%s /dev/%s | "
"awk '{print $2}'" % (my_item, name),
shell=True,
stdout=PIPE,
universal_newlines=True)
for line in sdparm_cmd.stdout:
hw_lst.append(('disk', name, item_def.get(my_item),
line.rstrip('\n').strip()))
# In some VMs, the disk-by id doesn't exists
if os.path.exists('/dev/disk/by-id/'):
for entry in os.listdir('/dev/disk/by-id/'):
idp = os.path.realpath('/dev/disk/by-id/' + entry).split('/')
if idp[-1] == name:
id_name = "id"
if entry.startswith('wwn'):
id_name = "wwn-id"
elif entry.startswith('scsi'):
id_name = "scsi-id"
hw_lst.append(('disk', name, id_name, entry))
detect_utils.read_SMART(hw_lst, "/dev/%s" % name)
def detect_disks(hw_lst):
"Detect disks."
names = diskinfo.disknames()
sizes = diskinfo.disksizes(names)
disks = [name for name, size in sizes.items() if size > 0]
hw_lst.append(("disk", "logical", "count", str(len(disks))))
for name in disks:
hw_lst.append(("disk", name, "size", str(sizes[name])))
item_list = [
"device/vendor",
"device/model",
"device/rev",
"queue/optimal_io_size",
"queue/physical_block_size",
"queue/rotational",
]
for my_item in item_list:
try:
with open("/sys/block/%s/%s" % (name, my_item), "r") as dev:
hw_lst.append(("disk", name, my_item.split("/")[1], dev.readline().rstrip("\n").strip()))
except Exception as excpt:
sys.stderr.write(
"Failed at getting disk information "
"at /sys/block/%s/device/%s: %s\n" % (name, my_item, str(excpt))
)
item_list = ["WCE", "RCD"]
item_def = {"WCE": "Write Cache Enable", "RCD": "Read Cache Disable"}
for my_item in item_list:
sdparm_cmd = Popen(
"sdparm -q --get=%s /dev/%s | " "awk '{print $2}'" % (my_item, name), shell=True, stdout=PIPE
)
for line in sdparm_cmd.stdout:
hw_lst.append(("disk", name, item_def.get(my_item), line.rstrip("\n").strip()))
# In some VMs, the disk-by id doesn't exists
if os.path.exists("/dev/disk/by-id/"):
for entry in os.listdir("/dev/disk/by-id/"):
idp = os.path.realpath("/dev/disk/by-id/" + entry).split("/")
if idp[-1] == name:
id_name = "id"
if entry.startswith("wwn"):
id_name = "wwn-id"
elif entry.startswith("scsi"):
id_name = "scsi-id"
hw_lst.append(("disk", name, id_name, entry))
detect_utils.read_SMART(hw_lst, "/dev/%s" % name)
def detect_disks(hw_lst):
'Detect disks.'
names = diskinfo.disknames()
sizes = diskinfo.disksizes(names)
disks = [name for name, size in sizes.items() if size > 0]
hw_lst.append(('disk', 'logical', 'count', str(len(disks))))
for name in disks:
hw_lst.append(('disk', name, 'size', str(sizes[name])))
item_list = ['device/vendor', 'device/model', 'device/rev',
'queue/optimal_io_size', 'queue/physical_block_size',
'queue/rotational']
for my_item in item_list:
try:
with open('/sys/block/%s/%s' % (name, my_item), 'r') as dev:
hw_lst.append(('disk', name, my_item.split('/')[1],
dev.readline().rstrip('\n').strip()))
except Exception as excpt:
sys.stderr.write(
'Failed at getting disk information '
'at /sys/block/%s/device/%s: %s\n' % (name,
my_item,
str(excpt)))
item_list = ['WCE', 'RCD']
item_def = {'WCE': 'Write Cache Enable', 'RCD': 'Read Cache Disable'}
for my_item in item_list:
sdparm_cmd = Popen("sdparm -q --get=%s /dev/%s | "
"awk '{print $2}'" % (my_item, name),
shell=True,
stdout=PIPE)
for line in sdparm_cmd.stdout:
hw_lst.append(('disk', name, item_def.get(my_item),
line.rstrip('\n').strip()))
# In some VMs, the disk-by id doesn't exists
if os.path.exists('/dev/disk/by-id/'):
for entry in os.listdir('/dev/disk/by-id/'):
idp = os.path.realpath('/dev/disk/by-id/' + entry).split('/')
if idp[-1] == name:
id_name = "id"
if entry.startswith('wwn'):
id_name = "wwn-id"
elif entry.startswith('scsi'):
id_name = "scsi-id"
hw_lst.append(('disk', name, id_name, entry))
detect_utils.read_SMART(hw_lst, "/dev/%s" % name)
def detect_disks(hw_lst):
"""Detect disks."""
names = diskinfo.disknames()
sizes = diskinfo.disksizes(names)
disks = [name for name, size in sizes.items() if size > 0]
hw_lst.append(('disk', 'logical', 'count', str(len(disks))))
for name in disks:
diskinfo.get_disk_info(name, sizes, hw_lst)
# nvme devices do not need standard cache mechanisms
if not name.startswith('nvme'):
diskinfo.get_disk_cache(name, hw_lst)
diskinfo.get_disk_id(name, hw_lst)
# TODO(rpittau): add smart-tools support for nvme devices
if not name.startswith('nvme'):
smart_utils.read_smart(hw_lst, "/dev/%s" % name)
def detect_disks(hw_lst):
'Detect disks.'
names = diskinfo.disknames()
sizes = diskinfo.disksizes(names)
disks = [name for name, size in sizes.items() if size > 0]
hw_lst.append(('disk', 'logical', 'count', str(len(disks))))
for name in disks:
hw_lst.append(('disk', name, 'size', str(sizes[name])))
item_list = [
'device/vendor', 'device/model', 'device/rev',
'queue/optimal_io_size', 'queue/physical_block_size',
'queue/rotational', 'queue/nr_requests'
]
for my_item in item_list:
try:
with open('/sys/block/%s/%s' % (name, my_item), 'r') as dev:
hw_lst.append(('disk', name, my_item.split('/')[1],
dev.readline().rstrip('\n').strip()))
except Exception as excpt:
sys.stderr.write('Failed at getting disk information '
'at /sys/block/%s/device/%s: %s\n' %
(name, my_item, str(excpt)))
try:
with open('/sys/block/%s/queue/scheduler' % name, 'r') as dev:
s_line = dev.readline().rstrip('\n').strip()
s = re.findall(r'\[(.*?)\]', s_line)
if s:
hw_lst.append(('disk', name, 'scheduler', s[0]))
except Exception:
sys.stderr.write('Cannot extract scheduler for disk %s' % name)
# WCE & RCD from sysfs
# https://www.kernel.org/doc/Documentation/scsi/sd-parameters.txt
my_item = '/sys/block/{0}/device'.format(name)
try:
_link_info = os.readlink(my_item)
_scsi_addr = _link_info.rsplit('/', 1)[1]
my_item = ('/sys/block/{0}/device' +
'/scsi_disk/{1}/cache_type').format(name, _scsi_addr)
with open(my_item, 'r') as cache_info:
my_text = cache_info.readline().rstrip('\n').strip()
_wce = '1'
_rcd = '0'
if my_text == 'write through':
_wce = '0'
elif my_text == 'none':
_wce = '0'
_rcd = '1'
elif 'daft' in my_text:
_rcd = '1'
hw_lst.append(('disk', name, 'Write Cache Enable', _wce))
hw_lst.append(('disk', name, 'Read Cache Disable', _rcd))
except Exception as excpt:
sys.stderr.write('Failed at getting disk information '
'at %s: %s\n' % (my_item, str(excpt)))
# In some VMs, the disk-by id doesn't exists
if os.path.exists('/dev/disk/by-id/'):
for entry in os.listdir('/dev/disk/by-id/'):
idp = os.path.realpath('/dev/disk/by-id/' + entry).split('/')
if idp[-1] == name:
id_name = "id"
if entry.startswith('wwn'):
id_name = "wwn-id"
elif entry.startswith('scsi'):
id_name = "scsi-id"
hw_lst.append(('disk', name, id_name, entry))
detect_utils.read_SMART(hw_lst, "/dev/%s" % name)
def detect_disks(hw_lst):
'Detect disks.'
names = diskinfo.disknames()
sizes = diskinfo.disksizes(names)
disks = [name for name, size in sizes.items() if size > 0]
hw_lst.append(('disk', 'logical', 'count', str(len(disks))))
for name in disks:
hw_lst.append(('disk', name, 'size', str(sizes[name])))
item_list = ['device/vendor', 'device/model', 'device/rev',
'queue/optimal_io_size', 'queue/physical_block_size',
'queue/rotational', 'queue/nr_requests']
for my_item in item_list:
try:
with open('/sys/block/%s/%s' % (name, my_item), 'r') as dev:
hw_lst.append(('disk', name, my_item.split('/')[1],
dev.readline().rstrip('\n').strip()))
except Exception as excpt:
sys.stderr.write(
'Failed at getting disk information '
'at /sys/block/%s/device/%s: %s\n' % (name,
my_item,
str(excpt)))
try:
with open('/sys/block/%s/queue/scheduler' % name, 'r') as dev:
s_line = dev.readline().rstrip('\n').strip()
sched = re.findall(r'\[(.*?)\]', s_line)
if sched:
hw_lst.append(('disk', name, 'scheduler', sched[0]))
except Exception:
sys.stderr.write('Cannot extract scheduler for disk %s' % name)
# WCE & RCD from sysfs
# https://www.kernel.org/doc/Documentation/scsi/sd-parameters.txt
my_item = '/sys/block/{0}/device'.format(name)
try:
_link_info = os.readlink(my_item)
_scsi_addr = _link_info.rsplit('/', 1)[1]
my_item = ('/sys/block/{0}/device' +
'/scsi_disk/{1}/cache_type').format(name, _scsi_addr)
with open(my_item, 'r') as cache_info:
my_text = cache_info.readline().rstrip('\n').strip()
_wce = '1'
_rcd = '0'
if my_text == 'write through':
_wce = '0'
elif my_text == 'none':
_wce = '0'
_rcd = '1'
elif 'daft' in my_text:
_rcd = '1'
hw_lst.append(('disk', name, 'Write Cache Enable', _wce))
hw_lst.append(('disk', name, 'Read Cache Disable', _rcd))
except Exception as excpt:
sys.stderr.write(
'Failed at getting disk information '
'at %s: %s\n' % (my_item, str(excpt)))
# In some VMs, the disk-by id doesn't exists
if os.path.exists('/dev/disk/by-id/'):
for entry in os.listdir('/dev/disk/by-id/'):
idp = os.path.realpath('/dev/disk/by-id/' + entry).split('/')
if idp[-1] == name:
id_name = "id"
if entry.startswith('wwn'):
id_name = "wwn-id"
elif entry.startswith('scsi'):
id_name = "scsi-id"
hw_lst.append(('disk', name, id_name, entry))
detect_utils.read_SMART(hw_lst, "/dev/%s" % name)
