[Xen-devel] The file system type of DomU is ext2 or ext3?

["Ye Zhou" <zhouyejoe@xxxxxxxxxxx>]

Hi, all:

     At first I have an idea to improve the performance of the log mechanism in ext3 file system of DomU, but when I do some experiment in DomU, I find a strange thing.

     When I input command "df -lhT" to see the file system type, it shows that it is ext3. But when I input command "cat /proc/mounts", it shows that "/dev/root / ext2 rw".This means the type is still ext2. So I can't do my experiments.

     # df -lhT
     >Filesystem    Type    Size  Used Avail Use% Mounted on
     >/dev/sda1     ext3    9.2G  3.7G  5.1G  42% /
     >tmpfs        tmpfs    129M     0  129M   0% /dev/shm

     

 

     # cat /proc/mounts
     >rootfs / rootfs rw 0 0
     >/dev/root / ext2 rw 0 0
     >/proc /proc proc rw 0 0
     >/sys /sys sysfs rw 0 0
     >/proc/bus/usb /proc/bus/usb usbfs rw 0 0
     >none /dev tmpfs rw 0 0
     >devpts /dev/pts devpts rw 0 0
     >tmpfs /dev/shm tmpfs rw 0 0
     >none /proc/sys/fs/binfmt_misc binfmt_misc rw 0 0
     >sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw 0 0
     >/etc/auto.misc /misc autofs rw,fd=6,pgrp=2065,timeout=300,minproto=5,maxproto=5,indirect 0 0
     >-hosts /net autofs rw,fd=11,pgrp=2065,timeout=300,minproto=5,maxproto=5,indirect 0 0

 

      I made  the DomU OS image by simply copying the main files from Dom0,and in Dom0 it shows it is ext3.

      Whether I made the wrong way in making the image? Or there are some other problems? I don't kown why!

      Thanks all!

     

------------------

Best Regarding！

                Ye  Zhou

--------------------------------------------------------

Cluster and Grid Computing Lab

Services Computing Technology and System Lab

Department of Computer Science

Huazhong University of Science and Technology Wuhan, 430074, China

Mobile:+86-13437170320

 

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