ACM Transactions on Computer Systems (TOCS)
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SIGMOD '88 Proceedings of the 1988 ACM SIGMOD international conference on Management of data
The design and implementation of a log-structured file system
ACM Transactions on Computer Systems (TOCS)
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Proceedings of the seventh international conference on Architectural support for programming languages and operating systems
A high performance multi-structured file system design
SOSP '91 Proceedings of the thirteenth ACM symposium on Operating systems principles
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OSDI '99 Proceedings of the third symposium on Operating systems design and implementation
RAPID-Cache ¾ A Reliable and Inexpensive Write Cache for Disk I/O Systems
HPCA '99 Proceedings of the 5th International Symposium on High Performance Computer Architecture
Interposed request routing for scalable network storage
OSDI'00 Proceedings of the 4th conference on Symposium on Operating System Design & Implementation - Volume 4
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TCON'95 Proceedings of the USENIX 1995 Technical Conference Proceedings
Metadata logging in an NFS server
TCON'95 Proceedings of the USENIX 1995 Technical Conference Proceedings
Journaling versus soft updates: asynchronous meta-data protection in file systems
ATEC '00 Proceedings of the annual conference on USENIX Annual Technical Conference
Fast consistency checking for the Solaris file system
ATEC '98 Proceedings of the annual conference on USENIX Annual Technical Conference
Scalability in the XFS file system
ATEC '96 Proceedings of the 1996 annual conference on USENIX Annual Technical Conference
Embedded inodes and explicit grouping: exploiting disk bandwidth for small files
ATEC '97 Proceedings of the annual conference on USENIX Annual Technical Conference
Soft updates: a technique for eliminating most synchronous writes in the fast filesystem
ATEC '99 Proceedings of the annual conference on USENIX Annual Technical Conference
The Design of New Journaling File Systems: The DualFS Case
IEEE Transactions on Computers
hFS: a hybrid file system prototype for improving small file and metadata performance
Proceedings of the 2nd ACM SIGOPS/EuroSys European Conference on Computer Systems 2007
PRIMS: making NVRAM suitable for extremely reliable storage
HotDep'07 Proceedings of the 3rd workshop on on Hot Topics in System Dependability
Snapshot-Based Data Backup Scheme: Open ROW Snapshot
ICCS 2009 Proceedings of the 9th International Conference on Computational Science
Snapshot-based data recovery approach
Proceedings of the 15th WSEAS international conference on Systems
Direct lookup and hash-based metadata placement for local file systems
Proceedings of the 6th International Systems and Storage Conference
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In this paper we introduce DualFS, a new high performance journaling file system that puts data and meta-data on different devices (usually, two partitions on the same disk or on different disks), and manages them in very different ways. Unlike other journaling file systems, DualFS has only one copy of every meta-data block. This copy is in the meta-data device, a log which is used by DualFS both to read and to write meta-data blocks. By avoiding a time-expensive extra copy of meta-data blocks, DualFS can achieve a good performance as compared to other journaling file systems. Indeed, we have implemented a DualFS prototype, which has been evaluated with microbenchmarks and macrobenchmarks, and we have found that DualFS greatly reduces the total I/O time taken by the file system in most cases (up to 97%), whereas it slightly increases the total I/O time only in a few and limited cases.