Skip to content

POHMELFS: the new release. Extended attributes.

Evgeniy Polyakov linux-fsdevel lkml netdev 1 version In review

Get series with b4
b4 am [email protected]

Versions newest first

  1. v1 Latest3 patches 2 repliesIn review

Patches in v1 No applies recorded yet

#Subject and filesSizeRepliesApplied
1/3POHMELFS: Documentation.Documentation/filesystems/pohmelfs/design_notes.txt Documentation/filesystems/pohmelfs/info.txt Documentation/filesystems/pohmelfs/network_protocol.txt+382 -02 replies
2/3POHMELFS: Core.fs/Kconfig fs/Makefile fs/pohmelfs/Kconfig +10 more+7678 -00 replies
3/3POHMELFS: VFS changes (2 exports).mm/filemap.c+2 -00 replies

Reviews trailers per patch

No Reviewed-by, Acked-by or Tested-by trailers for v1 yet.

Read the v1 thread

Cover letter [0/3] POHMELFS: the new release. Extended attributes.

Hello.

I'm pleased to announce the new POHMELFS release.

Short changelog:
* Extended attributes.
* Distributed locks for metadata updates.
* Bug fixes and cleanups ( i n c l u d i n g w h i t e s p a c e s ! ).

POHMELFS is a very high performance parallel network filesystem with local coherent cache of data and metadata. Its main goal is distributed processing of the data.

Features supported by POHMELFS:
* 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 simlpe and does not use byte-ranges, although they are sent in locking messages.
* Completely async processing of all events (hard and symlinks are the only exceptions) including object creation and data reading and writing.
* Flexible object architecture optimized for network processing. Ability to create long pathes to object and remove arbitrary huge directories in single network command.
* High performance is one of the main design goals.
* Very fast and scalable multithreaded userspace server. Being in userspace it works with any underlying filesystem and still is much faster than async in-kernel NFS one.
* Transactions support. Full failover for all operations. Resending transactions to different servers on timeout or error.
* Client is able to switch between different servers (if one goes down, client automatically reconnects to second and so on).
* Client parallel extensions: ability to write to multiple servers and balance reading between them.
* Client dynamical server reconfiguration: ability to add/remove servers from working set in run-time.
* Strong authentification and possible data encryption in network channel.
* Extended attributes support.

POHMELFS roadmap now includes distributed and parallel facilities of the server.

1. POHMELFS homepage.
http://www.ioremap.net/node/21

2. POHMELFS archive.
http://www.ioremap.net/archive/pohmelfs/

3. GIT trees.
http://www.ioremap.net/cgi-bin/gitweb.cgi

4. Development status.
http://www.ioremap.net/taxonomy/term/4

Signature · 1 line
	Evgeniy Polyakov

Read the cover letter in its thread