March 22, 2012
1:59 p.m.
Thanks for help, i find it useful. On 3/22/12, Vlad Dogaru <ddvlad@rosedu.org> wrote:
On Thu, Mar 22, 2012 at 3:31 PM, Akshay Nehe <akshaynehe785@gmail.com> wrote:
Hello,
Can we create file on ext4 file system which dose not uses extent allocation?
Man page of mkfs.ext4 suggests using "-O ^feature" to disable an ext4 feature. This seems to work:
$ dd if=/dev/zero of=test1 bs=4M count=20 [...] $ mkfs.ext4 -F test1 [...] $ file test1 test1: Linux rev 1.0 ext4 filesystem data, UUID=408f6da2-c4ef-4335-9574-985f3a349ed2 (extents) (huge files)
$ mkfs -O ^extent -F test1 [...] $ file test1 test1: Linux rev 1.0 ext4 filesystem data, UUID=23c046d6-db7a-419d-a1d5-0cba3c5b52d0 (huge files)
Hope this helps, Vlad
-- Regards, Akshay Nehe.