Author Archives: maru

Open discussion about data deduplication for Linux in general. Would you like a data deduplicating blockdevice in userspace or in the kernel? Would you prefer lessfs-2.0 with replication and snapshots? Your opinion counts!

This release fixes a major bug in the truncate code. This bug causes lessfs to crash with ccrypt and rsync -inline.

Lessfs-0.8.2 is mostly a bugfix release. Fixes a bug that causes lessfsck and mklessfs to segfault when compiled with encryption support and encryption disabled in the config. Fixes a bug that causes lessfs to segfault on umount when compiled with … Continue reading →

This release fixes a bug that causes mklessfs to segfault when DEBUG is not set in the configuration file. This release add the program lessfsck. lessfsck can be used  to check, optimize and repair a lessfs filesystem. lessfsck only supports … Continue reading →

Change log: Fixes a possible segfault when lessfs is used with lzo compression. Fixes a problem when compiling lessfs without encryption on a system without openssl-devel. Enhances the logging facility. Performance has improved on higher latency storage like drbd or … Continue reading →

Fixes a segfault on free after unmounting lessfs without encryption support. Fixes a problem that could lead to a deadlock when using file_io with NFS. A performance improvement, changed a mutex lock for a spinlock, to improve data throughput.

This new release improves performance in general. It adds a new storage method for the data that is stored. Previous lessfs versions would store the data in tokyocabinet. The new file_io backend allows to store the data in a regular … Continue reading →

Many people have been asking questions about the roadmap for lessfs. These are the features that I am currently working on sorted on importance. Snapshot support. Work on snapshot support is now 30% complete. Change the database that holds the … Continue reading →