ZFS-FUSE 0.7.0

A port of the ZFS file system from Sun, the most advanced file system in the world!

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What's new in ZFS-FUSE 0.7.0:

  • changed the fuse subtype to zfs-fuse This affects the contents of mtab, so everybody with scripts depending on that, please update accordingly!
  • pool version 26 (Emmanuel Anne)
  • consequently, all Sun's bug fixes; see changelog and upstream. This includes work on Sun BUG 6948890 (snapshot deletion can induce pathologically long spa_sync() times) which became something of a FAQ on the list. Note that datasets removals can still take a long time, especially with dedup enabled*
  • robust handling of rollback even when using cache (http://zfs-fuse.net/issues/65); this had been a 'high profile' issue reported on the 0.6.9 release with a workaround delivered in the maintenance version. The workaround however carried a performance penalty for the whole of zfs-fuse (basically killing page caching for zfs-fuse). The new solution is still not ideal, but at least only incurs a penalty when and only when a rollback is performed, this time by dropping all the kernel filesystem caches. We'd much rather have remounted the related filesystem(s) but this cannot always be done, and there is no way to find out whether it did work... We value data integrity above performance in this kind of situation.
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CDDL (Common Development and Distribut... 
Ricardo Correia
ROOT \ System \ Filesystems
ZFS is the most advanced file system ever invented. The ZFS-FUSE project makes it possible to create, mount, use and manage ZFS file systems under Linux, bringing the uncontested reliability and large feature set of ZFS to the Linux world.

What ZFS offers to you

ZFS has many features for all kinds of users - from the simple end-user to the biggest enterprise systems:

* Provable integrity - it checksums all data (and meta-data), which makes it possible to detect hardware errors (hard disk corruption, flaky IDE cables..). Read how ZFS helped to detect a faulty power supply after only two hours of usage, which was previously silently corrupting data for almost a year!
* Atomic updates - means that the on-disk state is consistent at all times, there's no need to perform a lengthy filesystem check after forced reboots/power failures.
* Instantaneous snapshots and clones - it makes it possible to have hourly, daily and weekly backups efficiently, as well as experiment with new system configurations without any risks.
* Built-in (optional) compression
* High scalability
* Pooled storage model - creating filesystems is as easy as creating a new directory. You can efficiently have thousands of filesystems, each with it's own quotas and reservations, and different properties (compression algorithm, checksum algorithm, etc..).
* Built-in stripes (RAID-0), mirrors (RAID-1) and RAID-Z (it's like software RAID-5, but more efficient due to ZFS's copy-on-write transactional model).
* Among others (variable sector sizes, adaptive endianness, ...)

Last updated on March 10th, 2011


#ZFS Linux #file system #ZFS filesystem #ZFS #FUSE #filesystem #Linux

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