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Wed, 08 Oct 2008

This day has come.

• The new distributed locking subsystem. Locks were prepared to be byte-range, but since all Linux filesystems lock the whole inode, it was decided to lock the whole object during writing. Actual messages being sent for locking/cache coherency protocol are byte-range, but because the whole inode is locked, lock is cached, so range actually is equal to inode->i_size. One can simultaneously write into the same page via different offsets from different client, and every time file will be coherent on all clients which do it and on the server itself.
• Documentation update. Fixed by Adam Langley (agl_imperialviolet.org)
• Add/del/show commands patch from Varun Chandramohan (varunc_linux.vnet.ibm.com)
• Bug fixes and cleanups.

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