Interview: Chris Mason about Btrfs
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| Q: Several people might be interested what you think about ZFS, why you see a
| need for Btrfs “despite of ZFS” (some people think ZFS is the solution for
| everything for them).
|
| Well, the short answer is that for Linux, there is no ZFS. I know about
| the FUSE port, but that isn’t a long term solution in terms of
| performance or enterprise workloads. ZFS has an impressive list of
| features (and clearly many happy users), but the real competition for
| Btrfs is other Linux filesystems.
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http://liquidat.wordpress.com/2007/08/07/interview-chris-mason-about-btrfs/
Related:
Linux: Btrfs, File Data and Metadata Checksums
,----[ Quote ]
| Chris Mason announced an early alpha release of his new Btrfs
| filesystem, "after the last FS summit, I started working on a new
| filesystem that maintains checksums of all file data and metadata." He
| listed the following features as "mostly implemented": "extent based file
| storage (2^64 max file size), space efficient packing of small files,
| space efficient indexed directories, dynamic inode allocation, writable
| snapshots, subvolumes (separate internal filesystem roots), checksums on
| data and metadata (multiple algorithms available), very fast offline
| filesystem check".
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http://kerneltrap.org/node/8376
OpenSolaris ZFS vs. Linux ext3 RAID5
,----[ Quote ]
| Few overarching conclusions can be drawn from the limited results of this
| study. Certainly, there are situations in which the Solaris/RAID-Z1
| configuration appears to outperform the Ubuntu/RAID-5 configuration. Many
| questions remain regarding the large discrepancy in CPU usage for small-file
| operations. Likewise, the Ubuntu/RAID-5 configuration appears to perform
| slightly better in certain situations, though not overwhelmingly so. At best,
| under these default configurations, one can say that overall the Solaris
| configuration performs no worse, and indicates that it might perform better
| under live operating conditions. The latter, though, is largely speculation.
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http://www.prestonlee.com/archives/121
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