Evgeniy Polyakov wrote:
Hi. I'm pleased to announce POHMEL high performance network parallel distributed filesystem. POHMELFS stands for Parallel Optimized Host Message Exchange Layered File System. Development status can be tracked in filesystem section [1]. This is a high performance network filesystem with local coherent cache of data and metadata. Its main goal is distributed parallel processing of data. This release brings following features: * Read requests (data read, directory listing, lookup requests) balancing between multiple servers. * Write requests are sent to multiple servers and completed only when all of them sent an ack. * Ability to add and/or remove servers from working set at run-time from userspace (via netlink, so the same command can be processed from real network though, but since server does not support it yet, I dropped network part). * Documentation (overall view and protocol commands)! * Rename command (oops, forgot it in previous releases :) * Several new mount options to control client behaviour instead of hardcoded numbers. * Bug fixes.
Neat :) Thanks for protocol documentation, too. Do you plan to add write-pages in addition to write-page? Also, write-page does not appear to be documented.
Is race-across-directories race-free? That is a sticky area, see Documentation/filesystems/directory-locking in particular.
With the exception of encryption, do you think the POHMELFS client is mostly complete, at this point?
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