github.com/kubewharf/katalyst-core@v0.5.3/pkg/agent/qrm-plugins/io/handlers/iocost/const.go (about)

     1  /*
     2  Copyright 2022 The Katalyst Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package iocost
    18  
    19  const EnableSetIOCostPeriodicalHandlerName = "SetIOCost"
    20  
    21  type DevModel string
    22  
    23  const (
    24  	DevModelDefault      DevModel = "default"
    25  	DevModelDefaultHDD   DevModel = "default_hdd"
    26  	DevModelVirtualdisk  DevModel = "virtualdisk"
    27  	DevModelNbd          DevModel = "nbd"
    28  	DevModelLoop         DevModel = "loop"
    29  	DevModelBcache       DevModel = "bcache"
    30  	DevModelDeviceMapper DevModel = "dm"
    31  
    32  	IOStatMetricCostVrate = "cost.vrate"
    33  
    34  	MetricNameIOCostVrate = "iocost_vrate"
    35  
    36  	queueRotationalFilePattern = "/sys/block/%s/queue/rotational"
    37  )
    38  
    39  type DeviceType int
    40  
    41  const (
    42  	HDD DeviceType = iota
    43  	SSD
    44  	Unknown
    45  )