Re: Things that Longhorn seems to be doing right
From: Ihar 'Philips' Filipau (filia_at_softhome.net)
Date: 10/30/03
- Previous message: Marcelo Tosatti: "Linux 2.4.23-pre9"
- Maybe in reply to: Hans Reiser: "Things that Longhorn seems to be doing right"
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Date: Thu, 30 Oct 2003 13:16:33 +0100 To: Hans Reiser <reiser@namesys.com>
Hans Reiser wrote:
>
> All that said, the indexes themselves should just be feature enhanced
> directories accessed via the kernel. Feature enhancements might include
> such things as better space efficiency, ordering plugins, etc.
>
I still see no point in putting this into kernel space.
As a proof of concept - if someone wants to try - one can implement
this system on top of any other fs. in user space.
open("/aaa.txt") ->
inode ->
underlaying_fs.open(itoa(inode)+".meta")
underlaying_fs.open(itoa(inode)+".data")
write(fd) -> fd<->inode -> updateindex(inode) + write(inode). [1]
and so on and so forth. LD_PRELOAD=libcoolfs.so my_cool_app
in other words file system can be used as smart storage.
hard links can be 'mis'used to implement search indeces.
[1] mmap() is the notable problem.
--
Ihar 'Philips' Filipau / with best regards from Saarbruecken.
--
"... and for $64000 question, could you get yourself vaguely
familiar with the notion of on-topic posting?"
-- Al Viro @ LKML
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- Previous message: Marcelo Tosatti: "Linux 2.4.23-pre9"
- Maybe in reply to: Hans Reiser: "Things that Longhorn seems to be doing right"
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
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