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types.go
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types.go
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//
// (C) Copyright 2019 Intel Corporation.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// GOVERNMENT LICENSE RIGHTS-OPEN SOURCE SOFTWARE
// The Government's rights to use, modify, reproduce, release, perform, display,
// or disclose this software are subject to the terms of the Apache License as
// provided in Contract No. 8F-30005.
// Any reproduction of computer software, computer software documentation, or
// portions thereof marked with this legend must also reproduce the markings.
//
package storage
import (
"bytes"
"fmt"
"sort"
"github.com/dustin/go-humanize"
"github.com/daos-stack/daos/src/control/common"
)
// ScmState represents the probed state of SCM modules on the system.
//go:generate stringer -type=ScmState
type ScmState int
const (
// ScmStateUnknown represents the default (unknown) state.
ScmStateUnknown ScmState = iota
// ScmStateNoRegions indicates that SCM modules exist, but
// no regions have been created.
ScmStateNoRegions
// ScmStateFreeCapacity indicates that SCM modules exist with
// configured regions that have available capacity.
ScmStateFreeCapacity
// ScmStateNoCapacity indicates that SCM modules exist with
// configured regions but not available capacity.
ScmStateNoCapacity
)
type (
// ScmModule represents a SCM DIMM.
//
// This is a simplified representation of the raw struct used in the ipmctl package.
ScmModule struct {
ChannelID uint32
ChannelPosition uint32
ControllerID uint32
SocketID uint32
PhysicalID uint32
Capacity uint64
}
// ScmModules is a type alias for []ScmModule that implements fmt.Stringer.
ScmModules []*ScmModule
// ScmNamespace represents a mapping of AppDirect regions to block device files.
ScmNamespace struct {
UUID string `json:"uuid"`
BlockDevice string `json:"blockdev"`
Name string `json:"dev"`
NumaNode uint32 `json:"numa_node"`
Size uint64 `json:"size"`
}
// ScmNamespaces is a type alias for []ScmNamespace that implements fmt.Stringer.
ScmNamespaces []*ScmNamespace
// NvmeDeviceHealth represents a set of health statistics for a NVMe device.
NvmeDeviceHealth struct {
Temp uint32
TempWarnTime uint32
TempCritTime uint32
CtrlBusyTime uint64
PowerCycles uint64
PowerOnHours uint64
UnsafeShutdowns uint64
MediaErrors uint64
ErrorLogEntries uint64
TempWarn bool
AvailSpareWarn bool
ReliabilityWarn bool
ReadOnlyWarn bool
VolatileWarn bool
}
// NvmeNamespace represents an individual NVMe namespace on a device.
NvmeNamespace struct {
ID uint32
Size uint64
}
// NvmeController represents a NVMe device controller which includes health
// and namespace information.
NvmeController struct {
Model string
Serial string
PciAddr string
FwRev string
SocketID int32
HealthStats *NvmeDeviceHealth
Namespaces []*NvmeNamespace
}
// NvmeControllers is a type alias for []*NvmeController which implements fmt.Stringer.
NvmeControllers []*NvmeController
)
func (sm *ScmModule) String() string {
// capacity given in IEC standard units.
return fmt.Sprintf("PhysicalID:%d Capacity:%s Location:(socket:%d memctrlr:%d "+
"chan:%d pos:%d)", sm.PhysicalID, humanize.IBytes(sm.Capacity),
sm.SocketID, sm.ControllerID, sm.ChannelID, sm.ChannelPosition)
}
func (sms ScmModules) String() string {
var buf bytes.Buffer
if len(sms) == 0 {
return "\t\tnone\n"
}
sort.Slice(sms, func(i, j int) bool { return sms[i].PhysicalID < sms[j].PhysicalID })
for _, sm := range sms {
fmt.Fprintf(&buf, "\t\t%s\n", sm)
}
return buf.String()
}
// Capacity reports total storage capacity (bytes) across all modules.
func (sms ScmModules) Capacity() (tb uint64) {
for _, sm := range sms {
tb += sm.Capacity
}
return
}
// Summary reports total storage space and the number of modules.
//
// Capacity given in IEC standard units.
func (sms ScmModules) Summary() string {
return fmt.Sprintf("%s (%d %s)", humanize.IBytes(sms.Capacity()), len(sms),
common.Pluralise("module", len(sms)))
}
func (sn *ScmNamespace) String() string {
// capacity given in IEC standard units.
return fmt.Sprintf("Device:%s Socket:%d Capacity:%s", sn.BlockDevice, sn.NumaNode,
humanize.Bytes(sn.Size))
}
func (sns ScmNamespaces) String() string {
var buf bytes.Buffer
if len(sns) == 0 {
return "\t\tnone\n"
}
sort.Slice(sns, func(i, j int) bool { return sns[i].BlockDevice < sns[j].BlockDevice })
for _, sn := range sns {
fmt.Fprintf(&buf, "\t\t%s\n", sn)
}
return buf.String()
}
// Capacity reports total storage capacity (bytes) across all namespaces.
func (sns ScmNamespaces) Capacity() (tb uint64) {
for _, sn := range sns {
tb += sn.Size
}
return
}
// Summary reports total storage space and the number of namespaces.
//
// Capacity given in IEC standard units.
func (sns ScmNamespaces) Summary() string {
return fmt.Sprintf("%s (%d %s)", humanize.Bytes(sns.Capacity()), len(sns),
common.Pluralise("namespace", len(sns)))
}