MFS presentation at Fast Usenix 2008

1. 鏡像檔案系統 Mirror File System 多重伺服器檔案系統 Twin Peaks Software Inc.

5. 本機檔案系統 Local File System Data EXT3 Application 1 Application 2 Kernel Space User Space Disk Driver EXT3 管理本機伺服器儲存設備上的檔案

6. 網路檔案系統 Network File System Application Application NFS (Client mount) Application Application Data EXT3/UFS NFSD Client Server NFS 管理遠端伺服器儲存設備上的檔案

7. EXT3 | NFS rsync, tar NFS (Client mount) Application Application Data B EXT3/UFS NFSD EXT3/UFS Data B Client Server Application 應用程式只能用在一端 ， 不能同時用在兩端

9. MFS = EXT3 + NFS Application Application Data EXT3/UFS Application Application Data EXT3/UFS Passive MFS Server Active MFS Server MFS NFS User Space Kernel Space

11. 檔案系統架構 SOLARIS Internal, Core Kernel Architecture, Jim Mauro. Richard McDougall, PRENTICE HALL Optical drive Network File System Operation calls File Operation System Calls Other System calls read () write () open () close () mkdir () rmdir () link () ioctl () creat () lseek () mount () umount () Statfs() sync () Vnode interfaces VFS interfaces UFS (2) NFS (2) VxFS HSFS QFS UFS (1) NFS (1) PCFS PCFS Data Data Data Data File System Operation calls

12. MFS 架構 File Operation System Calls File System Operation calls Other System calls read () write () open () close () mkdir () rmdir () link () ioctl () creat () lseek () mount () umount () Statfs() sync () Vnode interfaces VFS interfaces UFS (2) NFS (2) VxFS HSFS QFS UFS(1) NFS (1) PCFS PCFS Network Optical drive Data Data Data Data MFS Vnode VFS interface

20. Active/Active 架構 Server Server Application Application Data A UFS Application Application Data B UFS Active MFS Server MFS MFS Active MFS Server NFS NFS

21. M FS Locking Mechanism 鎖定機制 MFS 使用 UFS, NFS 檔案紀錄鎖 ( file record lock ) A ctive - A ctive 架構需要 鎖定機制 Locking enables write-related vnode operations as atomic operations. 鎖定 是預設選項 鎖定 在 A ctive - P assive 架構中是不需要的

24. MFS = NTFS + CIFS Application Application Data NTFS Application Application Data NTFS Remote Server Window Desktop/Laptop MFS CIFS

25. 線上檔案備份 即時或排程 MFS User Desktop/Laptop Folder ISP Server MFS Folder MFS Folder LAN or Wan

26. 伺服器複製 Secondary Mirror File System Mirror File System App Primary Email Mirror File System Mirroring Path : /home : /var/spool/mail Heartbeat

27. 企業叢集 Mirror File System Mirror File System App App App App App Mirror File System Mirror File System Mirroring Path Central Mirror File System App App

32. Q & A Application Application Data A Application Application Data B MFS MFS