Linked by Thom Holwerda on Wed 11th Aug 2010 19:14 UTC, submitted by Cytor
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Member since:
2005-07-11
ZFS is not a rampant layering violation, it is a re-organisation of the layers.
Instead of 8 or 9 or more layers between the apps and the disk, there are now 4 (physical, DMU, ZPU, filesystem, or something along those lines). Aka, stepping back, looking at the current state of storage, realising that the 30-year-old assumptions are no longer correct, and coming up with something better.
Btrfs may have started as a simple filesystem only. But it's now a filesystem, a volume manager, and a RAID engine. With more on the way.
Nope, the volume management and RAID is built into Btrfs now. Just like ZFS.
If only that were true. I'm guessing you don't read the btrfs-devel mailing list. Or you'd realise just how funny your comment is.
Wow, you are so far out in left field on this, that it's no longer funny. Btrfs is still missing half of the features of ZFS:
single-parity raid (aka raidz1)
dual-parity raid (aka raidz2)
triple-parity raid (aka raidz3)
deduplication
encryption
multiple compression schemes
dataset streaming (zfs send/recv)
There's more, but that's a good start on the ZFS features that Btrfs is currently missing (with no plans for incorporation in the next 6-12 months).
Actually, other than some corrections about Theo, you've proven your lack of factual information quite well.