Pallavi Dalya wrote:
hello,
as far as i know tree based file systems use
extents for managing free space. does reiser4 use a
bitmap based method or extents to keep track of used
and free blocks.
bitmap.
another issue is that when i tried storing a
small file an extent pointer was created for the file
which was also the case for a large file. but to my
knowledge extent pointers are created for large files
and in some file systems there is a fixed limit to the
file size after which it is assigned an extent
pointer.
we store in formatted nodes until the file reaches ~16k in size.
wat is the policy used in reiser4 to decide which
files should be stored using extent pointers and which
should not.
also from what i have observed each file has a
unique key representing it in reiser4. is there any
specific key generation algorithm for file names and
if yes where could i find it. is it possible that
instead of passing single file names to the key
generation algorithms we could pass the entire path to
generate a unique key.
If you have a limit on the path length, or you make keys variable in
length, yes.
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