// Capacity queries the underlying file system for disk capacity information.
func (r *RocksDB) Capacity() (roachpb.StoreCapacity, error) {
fileSystemUsage := gosigar.FileSystemUsage{}
dir := r.dir
if dir == "" {
dir = "/tmp"
}
if err := fileSystemUsage.Get(dir); err != nil {
return roachpb.StoreCapacity{}, err
}
if fileSystemUsage.Total > math.MaxInt64 {
return roachpb.StoreCapacity{}, fmt.Errorf("unsupported disk size %s, max supported size is %s",
humanize.IBytes(fileSystemUsage.Total), humanizeutil.IBytes(math.MaxInt64))
}
if fileSystemUsage.Avail > math.MaxInt64 {
return roachpb.StoreCapacity{}, fmt.Errorf("unsupported disk size %s, max supported size is %s",
humanize.IBytes(fileSystemUsage.Avail), humanizeutil.IBytes(math.MaxInt64))
}
fsuTotal := int64(fileSystemUsage.Total)
fsuAvail := int64(fileSystemUsage.Avail)
// If no size limitation have been placed on the store size or if the
// limitation is greater than what's available, just return the actual
// totals.
if r.maxSize == 0 || r.maxSize >= fsuTotal || r.dir == "" {
return roachpb.StoreCapacity{
Capacity: fsuTotal,
Available: fsuAvail,
}, nil
}
// Find the total size of all the files in the r.dir and all its
// subdirectories.
var totalUsedBytes int64
if errOuter := filepath.Walk(r.dir, func(path string, info os.FileInfo, err error) error {
if err != nil {
return nil
}
if info.Mode().IsRegular() {
totalUsedBytes += info.Size()
}
return nil
}); errOuter != nil {
return roachpb.StoreCapacity{}, errOuter
}
available := r.maxSize - totalUsedBytes
if available > fsuAvail {
available = fsuAvail
}
if available < 0 {
available = 0
}
return roachpb.StoreCapacity{
Capacity: r.maxSize,
Available: available,
}, nil
}
func GetFileSystemStat(fs sigar.FileSystem) (*FileSystemStat, error) {
stat := sigar.FileSystemUsage{}
if err := stat.Get(fs.DirName); err != nil {
return nil, err
}
filesystem := FileSystemStat{
FileSystemUsage: stat,
DevName: fs.DevName,
Mount: fs.DirName,
}
return &filesystem, nil
}
func GetFileSystemList75() []string {
result := []string{}
volumes := []sigar.FileSystem{}
if runtime.GOOS == "windows" {
volumes = getWindowsDrives()
} else {
fslist := sigar.FileSystemList{}
fslist.Get()
volumes = fslist.List
}
for _, volume := range volumes {
dirName := volume.DirName
usage := sigar.FileSystemUsage{}
usage.Get(dirName)
if usage.UsePercent() >= 75 {
result = append(result, fmt.Sprintf("%s (%s)",
dirName,
sigar.FormatPercent(usage.UsePercent())))
}
}
return result
}
// InitStores initializes ctx.Engines based on ctx.Stores.
func (ctx *Context) InitStores(stopper *stop.Stopper) error {
// TODO(peter): The comments and docs say that CacheSize and MemtableBudget
// are split evenly if there are multiple stores, but we aren't doing that
// currently.
for _, spec := range ctx.Stores.Specs {
var sizeInBytes = spec.SizeInBytes
if spec.InMemory {
if spec.SizePercent > 0 {
sysMem, err := GetTotalMemory()
if err != nil {
return fmt.Errorf("could not retrieve system memory")
}
sizeInBytes = int64(float64(sysMem) * spec.SizePercent / 100)
}
if sizeInBytes != 0 && sizeInBytes < minimumStoreSize {
return fmt.Errorf("%f%% of memory is only %s bytes, which is below the minimum requirement of %s",
spec.SizePercent, humanize.IBytes(uint64(sizeInBytes)), humanize.IBytes(uint64(minimumStoreSize)))
}
ctx.Engines = append(ctx.Engines, engine.NewInMem(spec.Attributes, uint64(sizeInBytes), stopper))
} else {
if spec.SizePercent > 0 {
fileSystemUsage := gosigar.FileSystemUsage{}
if err := fileSystemUsage.Get(spec.Path); err != nil {
return err
}
sizeInBytes = int64(float64(fileSystemUsage.Total) * spec.SizePercent / 100)
}
if sizeInBytes != 0 && sizeInBytes < minimumStoreSize {
return fmt.Errorf("%f%% of %s's total free space is only %s bytes, which is below the minimum requirement of %s",
spec.SizePercent, spec.Path, humanize.IBytes(uint64(sizeInBytes)),
humanize.IBytes(uint64(minimumStoreSize)))
}
ctx.Engines = append(ctx.Engines, engine.NewRocksDB(spec.Attributes, spec.Path, ctx.CacheSize,
ctx.MemtableBudget, sizeInBytes, stopper))
}
}
if len(ctx.Engines) == 1 {
log.Infof("1 storage engine initialized")
} else {
log.Infof("%d storage engines initialized", len(ctx.Engines))
}
return nil
}
// InitStores initializes ctx.Engines based on ctx.Stores.
func (ctx *Context) InitStores(stopper *stop.Stopper) error {
cache := engine.NewRocksDBCache(ctx.CacheSize)
defer cache.Release()
for _, spec := range ctx.Stores.Specs {
var sizeInBytes = spec.SizeInBytes
if spec.InMemory {
if spec.SizePercent > 0 {
sysMem, err := GetTotalMemory()
if err != nil {
return fmt.Errorf("could not retrieve system memory")
}
sizeInBytes = int64(float64(sysMem) * spec.SizePercent / 100)
}
if sizeInBytes != 0 && sizeInBytes < minimumStoreSize {
return fmt.Errorf("%f%% of memory is only %s bytes, which is below the minimum requirement of %s",
spec.SizePercent, humanizeutil.IBytes(sizeInBytes), humanizeutil.IBytes(minimumStoreSize))
}
ctx.Engines = append(ctx.Engines, engine.NewInMem(spec.Attributes, sizeInBytes, stopper))
} else {
if spec.SizePercent > 0 {
fileSystemUsage := gosigar.FileSystemUsage{}
if err := fileSystemUsage.Get(spec.Path); err != nil {
return err
}
sizeInBytes = int64(float64(fileSystemUsage.Total) * spec.SizePercent / 100)
}
if sizeInBytes != 0 && sizeInBytes < minimumStoreSize {
return fmt.Errorf("%f%% of %s's total free space is only %s bytes, which is below the minimum requirement of %s",
spec.SizePercent, spec.Path, humanizeutil.IBytes(sizeInBytes), humanizeutil.IBytes(minimumStoreSize))
}
ctx.Engines = append(ctx.Engines, engine.NewRocksDB(spec.Attributes, spec.Path,
cache, ctx.MemtableBudget, sizeInBytes, stopper))
}
}
if len(ctx.Engines) == 1 {
log.Infof("1 storage engine initialized")
} else {
log.Infof("%d storage engines initialized", len(ctx.Engines))
}
return nil
}
func GetFileSystemStat(fs sigar.FileSystem) (*FileSystemStat, error) {
stat := sigar.FileSystemUsage{}
err := stat.Get(fs.DirName)
if err != nil {
return nil, err
}
filesystem := FileSystemStat{
DevName: fs.DevName,
Total: stat.Total,
Free: stat.Free,
Avail: stat.Avail,
Used: stat.Used,
Files: stat.Files,
FreeFiles: stat.FreeFiles,
Mount: fs.DirName,
}
return &filesystem, nil
}
func main() {
fslist := gosigar.FileSystemList{}
fslist.Get()
fmt.Fprintf(os.Stdout, output_format,
"Filesystem", "Size", "Used", "Avail", "Use%", "Mounted on")
for _, fs := range fslist.List {
dir_name := fs.DirName
usage := gosigar.FileSystemUsage{}
usage.Get(dir_name)
fmt.Fprintf(os.Stdout, output_format,
fs.DevName,
gosigar.FormatSize(usage.Total),
gosigar.FormatSize(usage.Used),
gosigar.FormatSize(usage.Avail),
gosigar.FormatPercent(usage.UsePercent()),
dir_name)
}
}
// CreateEngines creates Engines based on the specs in ctx.Stores.
func (cfg *Config) CreateEngines() (Engines, error) {
engines := Engines(nil)
defer engines.Close()
if cfg.enginesCreated {
return Engines{}, errors.Errorf("engines already created")
}
cfg.enginesCreated = true
cache := engine.NewRocksDBCache(cfg.CacheSize)
defer cache.Release()
var physicalStores int
for _, spec := range cfg.Stores.Specs {
if !spec.InMemory {
physicalStores++
}
}
openFileLimitPerStore, err := setOpenFileLimit(physicalStores)
if err != nil {
return Engines{}, err
}
skipSizeCheck := cfg.TestingKnobs.Store != nil &&
cfg.TestingKnobs.Store.(*storage.StoreTestingKnobs).SkipMinSizeCheck
for _, spec := range cfg.Stores.Specs {
var sizeInBytes = spec.SizeInBytes
if spec.InMemory {
if spec.SizePercent > 0 {
sysMem, err := GetTotalMemory()
if err != nil {
return Engines{}, errors.Errorf("could not retrieve system memory")
}
sizeInBytes = int64(float64(sysMem) * spec.SizePercent / 100)
}
if sizeInBytes != 0 && !skipSizeCheck && sizeInBytes < base.MinimumStoreSize {
return Engines{}, errors.Errorf("%f%% of memory is only %s bytes, which is below the minimum requirement of %s",
spec.SizePercent, humanizeutil.IBytes(sizeInBytes), humanizeutil.IBytes(base.MinimumStoreSize))
}
engines = append(engines, engine.NewInMem(spec.Attributes, sizeInBytes))
} else {
if spec.SizePercent > 0 {
fileSystemUsage := gosigar.FileSystemUsage{}
if err := fileSystemUsage.Get(spec.Path); err != nil {
return Engines{}, err
}
sizeInBytes = int64(float64(fileSystemUsage.Total) * spec.SizePercent / 100)
}
if sizeInBytes != 0 && !skipSizeCheck && sizeInBytes < base.MinimumStoreSize {
return Engines{}, errors.Errorf("%f%% of %s's total free space is only %s bytes, which is below the minimum requirement of %s",
spec.SizePercent, spec.Path, humanizeutil.IBytes(sizeInBytes), humanizeutil.IBytes(base.MinimumStoreSize))
}
eng, err := engine.NewRocksDB(
spec.Attributes,
spec.Path,
cache,
sizeInBytes,
openFileLimitPerStore,
)
if err != nil {
return Engines{}, err
}
engines = append(engines, eng)
}
}
if len(engines) == 1 {
log.Infof(context.TODO(), "1 storage engine initialized")
} else {
log.Infof(context.TODO(), "%d storage engines initialized", len(engines))
}
enginesCopy := engines
engines = nil
return enginesCopy, nil
}
// Capacity queries the underlying file system for disk capacity information.
func (r *RocksDB) Capacity() (roachpb.StoreCapacity, error) {
fileSystemUsage := gosigar.FileSystemUsage{}
dir := r.dir
if dir == "" {
// This is an in-memory instance. Pretend we're empty since we
// don't know better and only use this for testing. Using any
// part of the actual file system here can throw off allocator
// rebalancing in a hard-to-trace manner. See #7050.
return roachpb.StoreCapacity{
Capacity: r.maxSize,
Available: r.maxSize,
}, nil
}
if err := fileSystemUsage.Get(dir); err != nil {
return roachpb.StoreCapacity{}, err
}
if fileSystemUsage.Total > math.MaxInt64 {
return roachpb.StoreCapacity{}, fmt.Errorf("unsupported disk size %s, max supported size is %s",
humanize.IBytes(fileSystemUsage.Total), humanizeutil.IBytes(math.MaxInt64))
}
if fileSystemUsage.Avail > math.MaxInt64 {
return roachpb.StoreCapacity{}, fmt.Errorf("unsupported disk size %s, max supported size is %s",
humanize.IBytes(fileSystemUsage.Avail), humanizeutil.IBytes(math.MaxInt64))
}
fsuTotal := int64(fileSystemUsage.Total)
fsuAvail := int64(fileSystemUsage.Avail)
// If no size limitation have been placed on the store size or if the
// limitation is greater than what's available, just return the actual
// totals.
if r.maxSize == 0 || r.maxSize >= fsuTotal || r.dir == "" {
return roachpb.StoreCapacity{
Capacity: fsuTotal,
Available: fsuAvail,
}, nil
}
// Find the total size of all the files in the r.dir and all its
// subdirectories.
var totalUsedBytes int64
if errOuter := filepath.Walk(r.dir, func(path string, info os.FileInfo, err error) error {
if err != nil {
return nil
}
if info.Mode().IsRegular() {
totalUsedBytes += info.Size()
}
return nil
}); errOuter != nil {
return roachpb.StoreCapacity{}, errOuter
}
available := r.maxSize - totalUsedBytes
if available > fsuAvail {
available = fsuAvail
}
if available < 0 {
available = 0
}
return roachpb.StoreCapacity{
Capacity: r.maxSize,
Available: available,
}, nil
}
import (
"os"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
sigar "github.com/elastic/gosigar"
)
var _ = Describe("SigarWindows", func() {
Describe("Memory", func() {
It("gets the total memory", func() {
mem := sigar.Mem{}
err := mem.Get()
Ω(err).ShouldNot(HaveOccurred())
Ω(mem.Total).Should(BeNumerically(">", 0))
})
})
Describe("Disk", func() {
It("gets the total disk space", func() {
usage := sigar.FileSystemUsage{}
err := usage.Get(os.TempDir())
Ω(err).ShouldNot(HaveOccurred())
Ω(usage.Total).Should(BeNumerically(">", 0))
})
})
})