November 21, 2006 L-Store Planning Meeting (VU)

Attending

• Hagewood (Nevoa)
• Brown, Dawson, de Ledesma, Sheldon, Tackett (VU)

Meeting Goal

Develop an initial strategy for development and releases of L-Store software. There was also some discussion of planned hardware deployment for the near term.

L-Store Releases and Features

L-Store Release 0.8 --- December 4 REDDnet@I2 meeting

• API documentation will be provided
  • with the caveat that it is subject to change
  • may change due to input from REDDnet community
• L-Store Functionality:
  • mkdir
  • ls
  • upload
  • download
  • command line help
  • storage fault tolerance via weaver erasure codes (upload and recovery)
• Demonstration similar to SC06 (but on a smaller scale... 20 Gbs?) will be made at REDDnet@I2 meeting.
• Clients will be made available (from REDDnet website) for installation by attendees at REDDnet@I2
  • for user testing and application development
  • files written to depots should be considered scratch
• Server and Depot software will not be made available at this point.
• Bugs: a dozen or so minor (non-data-threatening) bugs were discovered at SC06. As many of these as can be fixed will be, the rest will be fixed by "0.9" release.
• ACCRE will work with Med Center Staff (Leibler/Proteomics) to begin the process of migrating them over to using L-Store instead of ADIC
• NevoaExplorer interface (Hunter)
  • This interface will work with existing depots
  • Software will be demo-ed at REDDnet@I2
  • Full integration with L-Store will likely not be complete at this stage
  • Hunter is making a generic layer that will be agnostic to protocol (NFS, CIFS, L-Store)
• Omissions
  • No Physical Delete
  • No Authentication and Authorization
  • No production depots publically available, but public depots for scratch files and testing will be available.

L-Store Release 0.9 --- End of January 2007

• Client available on REDDnet webpage
• New Functionality
  • FUSE filesystem interface for Linux - allows you to mount L-Store storage as a native drive
  • Physical delete command
  • stat command
  • ls-l
  • Remaining SC06 bugs will be fixed, plus any new ones discovered
• The meta-data server for the publicly available depots will be set up on a mirrored-raid device for fault tolerance
  • "production" public depots will be available
• Full L-Store/NevoaExplorer interoperability will be implemented
• Server/Depot software will be made available to REDDnet collaborators on request
• Full scale testing of ADIC replacement for Proteomics will begin
• Omissions
  • No Authentication and Authorization

L-Store Release 1.0 --- May/June 2007

• User Manual and Server Manual will be made available
• Actual release date will be re-evaluated in January of 2007
• Fault tolerance
  • recover from lost metadata (we are not sure what the mechanism will be)
  • If a depot permanently dies, the missing file data will be automatically reconstituted for those files where possible. Unrecoverable files will be marked as such.
• Switch Proteomics over to L-Store, replace ADIC system.
• Real Server and Depot installer
• Authentication and Security features enabled
  • need to spell out more specifically what
• Load balancing on the meta-data servers will be implemented
• Integration of StorCor into L-Store
• complete L-Store monitoring will be ready taking advantage of new Java implementation of IBP

IBP Development???

• Hunter will have two interns from Sun, he will have them work on the IBP software, converting it to Java.
  • Larry has requested input on what is done
  • will provide a lot more depot monitoring
• libxio replacement

Near-Term Hardware Deployment

• Validation, Verification, and Performance Testing Depot
  • We will deploy about 20 of the Capricorn Depots in a single system that can be used for validation, verification, and performance testing.
  • This system will be for developers use only, and it can be taken down at any time. Software can be updated at any time.
  • Nightly, the L-Store development release code will be built, installed, and tested with Clyde. This may take a few months to get going smoothly.
  • this will be available to REDDnet users at the REDDnet Chicago meeting and afterwards, until public depots are available.
• Public Campus (LAN) System
  • approximately 10 of the Capricorn Depots will be deployed for use by VU campus researchers
  • A version of this will be made available with the release of L-Store 0.9 (end of January 2007).
• Public User (WAN) System
  • The remainder of the systems will be deployed as a user facility, combined with the existing REDDnet depots.
  • A version of this will be made available with the release of L-Store 0.9 (end of January 2007).