Linux Gains Lossless Filesystem
An R&D affiliate of the world's largest telephone company has achieved a stable release of a new Linux filesystem. (LinuxDevices.com)An R&D affiliate of the worlds largest telephone company has achieved a stable release of a new Linux filesystem said to improve reliability over conventional Linux filesystems, and offer performance advantages over Solariss UFS filesystem. NILFS 1.0 (new implementation of a log-structured filesystem) is available now from NTT Labs (Nippon Telegraph and Telephones Cyber Space Laboratories). Log-structured what? Log-structured filesystems write down all data in a continuous log-like format that is only appended to, never overwritten. The approach is said to reduce seek times, as well as minimizing the kind of data loss that occurs with conventional Linux filesystems.
For example, data loss occurs on ext3 filesystems when the system crashes during a write operation. When the system reboots, the journal notes that the write did not complete, and any partial data writes are lost.