fs

package
v1.4.0 Latest Latest
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 Go to latest Published: Nov 13, 2019 License: Apache-2.0 Imports: 22 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	DefaultBlksize    = uint32(1) << 12
	DefaultMaxNameLen = uint32(256)
)
View Source 
const (
	DefaultInodeExpiration = 120 * time.Second
	MaxInodeCache          = 10000000 // in terms of the number of items
)
View Source 
const (
	// MinInodeCacheEvictNum is used in the foreground eviction.
	// When clearing the inodes from the cache, it stops as soon as 10 inodes have been evicted.
	MinInodeCacheEvictNum = 10
	// MaxInodeCacheEvictNum is used in the back ground. We can evict 200000 inodes at max.
	MaxInodeCacheEvictNum = 200000

	BgEvictionInterval = 2 * time.Minute
)
View Source 
const (
	DeleteExtentsTimeout = 600 * time.Second
)
View Source 
const (
	// the expiration duration of the dentry in the cache (used internally)
	DentryValidDuration = 5 * time.Second
)
View Source 
const (
	LogTimeFormat = "20060102150405000"
)
View Source 
const (
	RootInode = proto.RootIno
)

Variables

View Source 
var (
	// The following two are used in the FUSE cache
	// every time the lookup will be performed on the fly, and the result will not be cached
	LookupValidDuration = 5 * time.Second
	// the expiration duration of the attributes in the FUSE cache
	AttrValidDuration = 30 * time.Second
)

Functions

func ParseError 

func ParseError(err error) syscall.Errno

ParseError returns the error type.

func ParseType 

func ParseType(t uint32) fuseutil.DirentType

ParseType returns the dentry type.

Types

type DentryCache added in v1.4.0 

type DentryCache struct {
	sync.Mutex
	// contains filtered or unexported fields
}

DentryCache defines the dentry cache.

func NewDentryCache added in v1.4.0 

func NewDentryCache() *DentryCache

NewDentryCache returns a new dentry cache.

func (*DentryCache) Delete added in v1.4.0 

func (dc *DentryCache) Delete(name string)

Delete deletes the item based on the given key.

func (*DentryCache) Get added in v1.4.0 

func (dc *DentryCache) Get(name string) (uint64, bool)

Get gets the item from the cache based on the given key.

func (*DentryCache) Put added in v1.4.0 

func (dc *DentryCache) Put(name string, ino uint64)

Put puts an item into the cache.

type Handle 

type Handle struct {
	// contains filtered or unexported fields
}

type HandleCache 

type HandleCache struct {
	sync.RWMutex
	// contains filtered or unexported fields
}

func NewHandleCache 

func NewHandleCache() *HandleCache

func (*HandleCache) Assign 

func (hc *HandleCache) Assign(ino uint64) fuseops.HandleID

func (*HandleCache) Get 

func (hc *HandleCache) Get(hid fuseops.HandleID) *Handle

func (*HandleCache) Release 

func (hc *HandleCache) Release(hid fuseops.HandleID) *Handle

type Inode 

type Inode struct {
	// contains filtered or unexported fields
}

Inode defines the structure of an inode.

func NewInode 

func NewInode(info *proto.InodeInfo) *Inode

NewInode returns a new inode.

func (*Inode) String 

func (inode *Inode) String() string

String returns the string format of the inode.

type InodeCache 

type InodeCache struct {
	sync.RWMutex
	// contains filtered or unexported fields
}

InodeCache defines the structure of the inode cache.

func NewInodeCache 

func NewInodeCache(exp time.Duration, maxElements int) *InodeCache

NewInodeCache returns a new inode cache.

func (*InodeCache) Delete 

func (ic *InodeCache) Delete(ino uint64)

Delete deletes the inode based on the given inode ID.

func (*InodeCache) Get 

func (ic *InodeCache) Get(ino uint64) *Inode

Get returns the inode based on the given inode ID.

func (*InodeCache) Put 

func (ic *InodeCache) Put(inode *Inode)

Put puts the given inode into the inode cache.

type MountOption added in v1.4.0 

type MountOption struct {
	Config        *config.Config
	MountPoint    string
	Volname       string
	Owner         string
	Master        string
	Logpath       string
	Loglvl        string
	Profport      string
	IcacheTimeout int64
	LookupValid   int64
	AttrValid     int64
	ReadRate      int64
	WriteRate     int64
	EnSyncWrite   int64
	UmpDatadir    string
	Rdonly        bool
	WriteCache    bool
	KeepCache     bool
}

type OrphanInodeList 

type OrphanInodeList struct {
	sync.RWMutex
	// contains filtered or unexported fields
}

OrphanInodeList defines the orphan inode list, which is a list of orphan inodes. An orphan inode is the inode whose nlink value is 0.

func NewOrphanInodeList 

func NewOrphanInodeList() *OrphanInodeList

NewOrphanInodeList returns a new orphan inode list.

func (*OrphanInodeList) Evict 

func (l *OrphanInodeList) Evict(ino uint64) bool

Evict remove the given inode from the orphan inode list, and evicts it.

func (*OrphanInodeList) Put 

func (l *OrphanInodeList) Put(ino uint64)

Put puts an inode into the orphan inode list.

type Super 

type Super struct {
	// contains filtered or unexported fields
}

func NewSuper 

func NewSuper(opt *MountOption) (s *Super, err error)

func (*Super) ClusterName 

func (s *Super) ClusterName() string

func (*Super) CreateFile 

func (s *Super) CreateFile(ctx context.Context, op *fuseops.CreateFileOp) error
func (s *Super) CreateLink(ctx context.Context, op *fuseops.CreateLinkOp) error
func (s *Super) CreateSymlink(ctx context.Context, op *fuseops.CreateSymlinkOp) error

func (*Super) Destroy 

func (s *Super) Destroy()

func (*Super) FlushFile 

func (s *Super) FlushFile(ctx context.Context, op *fuseops.FlushFileOp) error

func (*Super) ForgetInode 

func (s *Super) ForgetInode(ctx context.Context, op *fuseops.ForgetInodeOp) error

func (*Super) GetInodeAttributes 

func (s *Super) GetInodeAttributes(ctx context.Context, op *fuseops.GetInodeAttributesOp) error

func (*Super) GetRate added in v1.4.0 

func (s *Super) GetRate(w http.ResponseWriter, r *http.Request)

func (*Super) GetXattr 

func (s *Super) GetXattr(ctx context.Context, op *fuseops.GetXattrOp) error

func (*Super) InodeGet 

func (s *Super) InodeGet(ino uint64) (*Inode, error)

InodeGet return the inode based on the given inode ID.

func (*Super) ListXattr 

func (s *Super) ListXattr(ctx context.Context, op *fuseops.ListXattrOp) error

func (*Super) LookUpInode 

func (s *Super) LookUpInode(ctx context.Context, op *fuseops.LookUpInodeOp) error

func (*Super) MkDir 

func (s *Super) MkDir(ctx context.Context, op *fuseops.MkDirOp) error

func (*Super) MkNode 

func (s *Super) MkNode(ctx context.Context, op *fuseops.MkNodeOp) error

func (*Super) OpenDir 

func (s *Super) OpenDir(ctx context.Context, op *fuseops.OpenDirOp) error

func (*Super) OpenFile 

func (s *Super) OpenFile(ctx context.Context, op *fuseops.OpenFileOp) error

func (*Super) ReadDir 

func (s *Super) ReadDir(ctx context.Context, op *fuseops.ReadDirOp) error

func (*Super) ReadFile 

func (s *Super) ReadFile(ctx context.Context, op *fuseops.ReadFileOp) error
func (s *Super) ReadSymlink(ctx context.Context, op *fuseops.ReadSymlinkOp) error

func (*Super) ReleaseDirHandle 

func (s *Super) ReleaseDirHandle(ctx context.Context, op *fuseops.ReleaseDirHandleOp) error

func (*Super) ReleaseFileHandle 

func (s *Super) ReleaseFileHandle(ctx context.Context, op *fuseops.ReleaseFileHandleOp) error

func (*Super) RemoveXattr 

func (s *Super) RemoveXattr(ctx context.Context, op *fuseops.RemoveXattrOp) error

func (*Super) Rename 

func (s *Super) Rename(ctx context.Context, op *fuseops.RenameOp) error

func (*Super) RmDir 

func (s *Super) RmDir(ctx context.Context, op *fuseops.RmDirOp) error

func (*Super) SetInodeAttributes 

func (s *Super) SetInodeAttributes(ctx context.Context, op *fuseops.SetInodeAttributesOp) error

func (*Super) SetRate added in v1.4.0 

func (s *Super) SetRate(w http.ResponseWriter, r *http.Request)

func (*Super) SetXattr 

func (s *Super) SetXattr(ctx context.Context, op *fuseops.SetXattrOp) error

func (*Super) StatFS 

func (s *Super) StatFS(ctx context.Context, op *fuseops.StatFSOp) error

func (*Super) SyncFile 

func (s *Super) SyncFile(ctx context.Context, op *fuseops.SyncFileOp) error
func (s *Super) Unlink(ctx context.Context, op *fuseops.UnlinkOp) error

func (*Super) WriteFile 

func (s *Super) WriteFile(ctx context.Context, op *fuseops.WriteFileOp) error

Source Files

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