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disk plugin: use new commands interface, add missing plugin description

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This commit is contained in:
Jan Vcelak 2012-05-11 16:11:33 +02:00
parent 33d8172a85
commit da9431b206
1 changed files with 18 additions and 8 deletions
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26
tuned/plugins/plugin_disk.py
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@ -8,12 +8,13 @@ import struct
log = tuned.logs.get()
class DiskPlugin(tuned.plugins.Plugin):
"""
Plugin for tuning options of disks.
"""
_supported_vendors = ["ATA", "SCSI"]
def __init__(self, devices, options):
"""
"""
super(self.__class__, self).__init__(devices, options)
@ -130,15 +131,18 @@ class DiskPlugin(tuned.plugins.Plugin):
log.debug("%s load: read %f, write %f" % (dev, self.stats[dev]["read"], self.stats[dev]["write"]))
log.debug("%s idle: read %d, write %d, level %d" % (dev, self.devidle[dev]["read"], self.devidle[dev]["write"], self.devidle[dev]["LEVEL"]))
def _elevator_file(self, device):
return os.path.join("/sys/block/", device, "queue/scheduler")
@command_set("elevator", per_device=True)
def _set_elevator(self, value, device):
sys_file = os.path.join("/sys/block/", device, "queue/scheduler")
sys_file = self._elevator_file(device)
tuned.utils.commands.write_to_file(sys_file, value)
@command_get("elevator")
def _get_elevator(self, device):
# TODO: ticket #21, does not work
sys_file = os.path.join("/sys/block/", device, "queue/scheduler")
sys_file = self._elevator_file(device)
return tuned.utils.commands.read_file(sys_file)
def _alpm_policy_files(self):
@ -193,14 +197,17 @@ class DiskPlugin(tuned.plugins.Plugin):
# TODO: ticket #23, There's no way how to get current/old spindown value.
tuned.utils.commands.execute(["hdparm", "-S", value, "/dev/" + device])
def _readahead_file(self, device):
return os.path.join("/sys/block/", device, "queue/read_ahead_kb")
@command_set("readahead", per_device=True)
def _set_readahead(self, value, device):
sys_file = os.path.join("/sys/block/", device, "queue/read_ahead_kb")
sys_file = self._readahead_file(device)
tuned.utils.commands.write_to_file(sys_file, "%d" % value)
@command_get("readahead", per_device=True)
def _get_readahead(self, device):
sys_file = os.path.join("/sys/block/", device, "queue/read_ahead_kb")
sys_file = self._readahead_file(device)
value = tuned.utils.commands.read_file(sys_file).strip()
if len(value) == 0:
return None
@ -214,14 +221,17 @@ class DiskPlugin(tuned.plugins.Plugin):
log.warn("readhead_multiply not implemented")
#self._set_readahead(new_value, device)
def _scheduler_quantum_file(self, device):
return os.path.join("/sys/block/", device, "queue/iosched/quantum")
@command_set("scheduler_quantum", per_device=True)
def _set_scheduler_quantum(self, value, device):
sys_file = os.path.join("/sys/block/", device, "queue/iosched/quantum")
sys_file = self._scheduler_quantum_file(device)
tuned.utils.commands.write_to_file(sys_file, value)
@command_get("scheduler_quantum")
def _get_scheduler_quantum(self, device):
sys_file = os.path.join("/sys/block/", device, "queue/iosched/quantum")
sys_file = self._scheduler_quantum_file(device)
value = tuned.utils.commands.read_file(sys_file).strip()
if len(value) == 0:
log.info("disk_scheduler_quantum option is not supported by this HW")