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DST: Distributed storage.

Evgeniy Polyakov linux-fsdevel lkml netdev 1 version In review

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  1. v1 Latest4 patches 3 repliesIn review

Patches in v1 No applies recorded yet

#Subject and filesSizeRepliesApplied
1/4DST: Distributed storage documentation.Documentation/dst/algorithms.txt Documentation/dst/dst.txt Documentation/dst/sysfs.txt+217 -01 reply
2/4DST: Core distributed storage files.drivers/block/Kconfig drivers/block/Makefile drivers/block/dst/Kconfig +4 more+2066 -10 replies
3/4DST: Network state machine.drivers/block/dst/kst.c+1515 -00 replies
4/4DST: Algorithms used in distributed storage.drivers/block/dst/alg_linear.c drivers/block/dst/alg_mirror.c+1650 -00 replies

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Cover letter [0/4] DST: Distributed storage.

Distributed storage.

I'm pleased to announce the 12'th release of the distributed storage subsystem (DST).

DST allows to form a storage on top of local and remote nodes and combine them into linear or mirroring setup, which in turn can be exported to remote nodes.

Short changelog:
* new improved mirroring algorithm.
This algorithm uses sliding window approach for full resync and write log for partial resync.
* fixed number of typos and debug cleanups
* update inode size when linear algorithm changes the size of the storage in run time
* extended number of sysfs files and documentation for them
* fixed leak in local export node setup
* name is 'Dancing with the smoked neutrino' now

Overall list of features of the DST can be found on project's homepage:

http://tservice.net.ru/~s0mbre/old/?section=projects&item=dst

DST is also exported as a git tree available for clone and pull from
http://tservice.net.ru/~s0mbre/archive/dst/dst.git

Interested reader can test DST with 2.6.23 tree too (it should compile fine, but was not tested).

DST passed all FS tests in LTP with XFS (modulo MAX_LOCK_DEPTH too low bug:

[ 8398.605691] BUG: MAX_LOCK_DEPTH too low!
[ 8398.609641] turning off the locking correctness validator.

this is not DST problem though), but it was not performed with offline/online nodes.

Thank you.

Signed-off-by Evgeniy Polyakov <[email protected]>

Read the cover letter in its thread