linux-kernel - Re: [1/9] pohmelfs: documentation.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20081226192219.GB1761@ucw.cz>
Date:	Fri, 26 Dec 2008 20:22:20 +0100
From:	Pavel Machek <pavel@...e.cz>
To:	Evgeniy Polyakov <zbe@...emap.net>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, pohmelfs@...emap.net,
	netdev@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	Eveniy Polyakov <zbr@...emap.net>
Subject: Re: [1/9] pohmelfs: documentation.

Hi!

> +Homepage: http://www.ioremap.net/projects/pohmelfs
> +
> +POHMELFS first began as a network filesystem with coherent local data and
> +metadata caches but is now evolving into a parallel distributed filesystem.
> +
> +Main features of this FS include:
> + * Locally coherent cache for data and metadata with (potentially) byte-range locks.
> +	Since all Linux filesystems lock the whole inode during writing, algorithm
> +	is very simple and does not use byte-ranges, although they are sent in
> +	locking messages.
> + * Completely async processing of all events except creation of hard and symbolic
> +	links, and rename events.
> +	Object creation and data reading and writing are processed asynchronously.
> + * Flexible object architecture optimized for network processing.
> +	Ability to create long paths to objects and remove arbitrarily huge
> +	directories with a single network command.
> +	(like removing the whole kernel tree via a single network
> command).

Hmm, so we'll need new unlink_recursively() syscall?

> + * Very high performance.

Do you have some nfs comparison?
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/