1. Virtualization & File System
By Nikhileshkumar Ikhar

2. File System
• Abstraction of H/W
• Different kinds of FS
– ext
– FAT32, NTFS
– Brtfs
– Hadoop, Samba

3. Virtualization [1]
• With OS assistance
• Without OS assistance
– Hypervisor

4. Virtualization
• Full Virtualization
– Guest OS doesn’t know about virtualization
– Binary translation, simulation/emulation
• Para Virtualization
– Guest OS is modified for virtualization
• H/w Assisted Virtualization
– Hypervisor assist in virtualization
– IntelVT and AMD-V

5. Permission [2]
• Ring Structure
– open in UserSpace User Space
3
– sys_open in Kernel
2
1
0 OS

6. Virtualization
• Memory Virtualization
– Real MMU for Virtual MMU
• Device and I/O Virtualization
– Ethernet, Sound Card, USB, NIC
– KeyBoard, Mouse, Comm port
– etc

7. Internet Links
1. http://www.vmware.com/files/pdf/VMware_
paravirtualization.pdf
2. http://en.wikipedia.org/wiki/Ring_(computer
_security)

8. Thank You