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disk plugin: ignore loop devices #678

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disk plugin: ignore loop devices #678

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6 changes: 6 additions & 0 deletions tuned/plugins/plugin_disk.py
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Original file line number Diff line number Diff line change
Expand Up @@ -132,9 +132,15 @@ def _is_hdparm_apm_supported(self, device):
self._hdparm_apm_device_support[device] = True
return True

@staticmethod
def _is_loop_device(device):
LOOP_DEVICE_MAJOR = 7
return os.major(device.device_number) == LOOP_DEVICE_MAJOR

@classmethod
def _device_is_supported(cls, device):
return device.device_type == "disk" and \
not cls._is_loop_device(device) and \
device.attributes.get("removable", None) == b"0" and \
(device.parent is None or \
device.parent.subsystem in ["scsi", "virtio", "xen", "nvme"])
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