PPT-File System Consistency

Outline Overview of file systems File system design Sharing files Unix file system Consistency and crash recovery Journaling file systems Logstructured file systems 2 Review We saw that file systems use writeback caching for improving the performance of file writes. Sandeep. Hans. Agenda. Database Consistency Conditions. STM Consistency Conditions. A different perspective. Consistency with other STM properties.. Conclusion. Database Consistency Conditions. Recoverability. Pay only when it matters. Tim . Kraska. , Martin . Hentschel. , Gustavo Alonso, Donald . Kossmann. 27.09.2009 Systems. Modified by . Raja . Amadala. - 08305078. Sandeep. N - 08305063. 1. 2. You own a Kiosk. Speculative Execution in a Distributed File System. 1. and. Rethink the Sync. 2. Edmund Nightingale. 12. , . Kaushik. Veeraraghavan. 2. , Peter Chen. 12. , Jason Flinn. 12. Presentation by . Ji. -Yong Shin. MODIS Science Team Meeting. 19 May 2011 – College Park, MD. Bryan Franz. and the. NASA Ocean Biology . Processing Group. Outline. How we define a Climate Data Record. How we achieve CDR quality. Results of latest reprocessing effort. Models. . Bhavana . Pallepati. . Client-Centric Consistency Models. The previously studied consistency models concern themselves with maintaining a consistent (globally accessible) data-store in the presence of concurrent read/write operations. V., Pillai, T., . Arpaci-Dusseau. , A. . and . Arpaci-Dusseau. , R. . Presented by. Mohammed Alabdulhadi. 28 October 2013. Optimistic Crash Consistency. Background. Introduction. Key Points of the paper. Presenter:. Anup. . Niroula. Before going to LSCs. Requirement Capturing and Analysis. UML diagrams. - Specify scenario of the system behavior. -Interaction between the objects. Message Sequence Chart. COS 518: . Advanced Computer Systems. Lecture . 3. Michael Freedman. Let’s say A and B send an op. . All readers see A . →. B ?. All . readers see . B. . → A ? . Some see . A . → B . and others . Distributed Systems. Lecture . 16. Michael Freedman. 2. Linearizability. Eventual. Consistency models. Sequential. Causal. Lamport. clocks: C(a) < C(z) Conclusion: . None. Vector clocks: V(a) < V(z) Conclusion: . Gibco boxy bottle 2008150presentGibco One Shot 50 mL bottle2016150presentGibco sera151committed to quality and innovation since 1962Gibco square plastics 19871501996Gibco round plastics 19961502007Gib Topics: synchronization wrap-up, . need for sequential consistency, fences . 2. Load-Linked and Store Conditional. LL-SC is an implementation of atomic read-modify-write. with very high flexibility. Vijay Chidambaram. , . Tushar. Sharma,. Andrea . Arpaci-Dusseau. , . Remzi. . Arpaci-Dusseau. The Advanced Systems Laboratory. University of Wisconsin Madison. The problem: crash consistency. Single operation updates . COS 418: Distributed Systems. Lecture . 14. Wyatt Lloyd. Consistency Hierarchy. Linearizability. Sequential Consistency. Causal+ Consistency. Eventual Consistency. e.g., RAFT. e.g., Bayou. e.g., Dynamo. Measuring and Understanding Consistency at Facebook. Haonan Lu*. †. ,. . Kaushik. . Veeraraghavan. †. ,. . Philippe . Ajoux. †. , . Jim . Hunt. †. , . Yee . Jiun. Song. †. , Wendy . Tobagus.