linux-fsdevel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: "Jörn Engel" <joern@logfs.org>
To: Jan Engelhardt <jengelh@medozas.de>
Cc: Maxim Shchetynin <maxim@linux.vnet.ibm.com>,
	linux-fsdevel@vger.kernel.org, Matthew Wilcox <matthew@wil.cx>,
	linux-kernel@vger.kernel.org
Subject: Re: AZFS file system proposal
Date: Tue, 17 Jun 2008 12:53:00 +0200	[thread overview]
Message-ID: <20080617105300.GA28310@logfs.org> (raw)
In-Reply-To: <alpine.LNX.1.10.0806171133220.6620@fbirervta.pbzchgretzou.qr>

On Tue, 17 June 2008 11:35:10 +0200, Jan Engelhardt wrote:
> On Tuesday 2008-06-17 11:06, Maxim Shchetynin wrote:
> 
> >I would say you can either mmap it or place a file system on it.
> 
> The help text implies that I *need* azfs to mmap it - and that sounds
> like a Rube Goldberg machine.

Some people actually prefer filesystems over raw devices for a variety
of reasons:
- each file brings its own address space, which offers memory protection
  from other processes,
- files can have owners and permission bits,
- files hide the fragmentation of the underlying device from users,
- a file system provides a common and well-understood api for devices
  with less common or well-understood apis,
- etc.

Those reasons are as valid for azfs as for any other filesystem.  I have
no doubt that azfs is useful.  It probably wouldn't hurt to express the
merits of the filesystem and the problems it is supposed to solve a
little better.  So far most criticism was based on the fact that noone
understood what the hell it was all about.

My personal question when looking at this is: Why not use ext2?  It
appears to me that an ext2 mounted with '-o xip' would solve the same
problems.

Jörn

-- 
To announce that there must be no criticism of the President, or that we
are to stand by the President, right or wrong, is not only unpatriotic
and servile, but is morally treasonable to the American public.
-- Theodore Roosevelt, Kansas City Star, 1918
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

  reply	other threads:[~2008-06-17 10:53 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-06-09  8:46 AZFS file system proposal Maxim Shchetynin
2008-06-09 12:55 ` Matthew Wilcox
2008-06-10  8:49   ` Maxim Shchetynin
2008-06-10 22:02     ` Jan Engelhardt
2008-06-17  9:06       ` Maxim Shchetynin
2008-06-17  9:35         ` Jan Engelhardt
2008-06-17 10:53           ` Jörn Engel [this message]
2008-06-17 14:06             ` Maxim Shchetynin
2008-06-17 14:45               ` Jörn Engel
2008-06-17 11:57           ` Maxim Shchetynin
2008-06-17 14:36             ` Jan Engelhardt
2008-06-17 15:51               ` Jörn Engel
2008-06-18 11:15               ` Maxim Shchetynin
2008-06-18 20:56                 ` Jörn Engel
2008-06-18 11:21               ` Maxim Shchetynin
2008-06-17 15:02 ` Dmitri Vorobiev
2008-06-18 14:01   ` Maxim Shchetynin
2008-06-18 11:27 ` Christoph Hellwig
2008-06-18 14:03   ` Maxim Shchetynin
  -- strict thread matches above, loose matches on Subject: below --
2008-06-18 14:06 Maxim Shchetynin
2008-07-01 14:59 ` Arnd Bergmann
2008-07-07 15:39   ` Maxim Shchetynin
2008-07-08 14:42     ` Arnd Bergmann
2008-07-09  6:48       ` Benjamin Herrenschmidt
2008-07-09  8:58   ` Benjamin Herrenschmidt
2008-07-09  9:14     ` Maxim Shchetynin
2008-07-09  9:23       ` Benjamin Herrenschmidt
2008-07-09 10:58         ` Maxim Shchetynin

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20080617105300.GA28310@logfs.org \
    --to=joern@logfs.org \
    --cc=jengelh@medozas.de \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=matthew@wil.cx \
    --cc=maxim@linux.vnet.ibm.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).