btrfs sounds mightly cool. [LWN.net]

btrfs sounds mightly cool.

Posted Jun 21, 2007 12:16 UTC (Thu) by dion (subscriber, #2764)
Parent article: btrfs and NILFS

Wow, it certainly sounds like btrfs got most of the features I've been wanting from ZFS (checksumming & snapshots), but with less of the license fuss.

All that's needed to gain coolness parity with ZFS is something like raid-z, unfortunately I don't see how that can be done without implementing it in the fs itself.

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btrfs sounds mightly cool.

Posted Jun 22, 2007 13:13 UTC (Fri) by aglet (guest, #1334) [Link]

I wondered about the ZFS "license fuss" -- there's a good precis here: http://kerneltrap.org/node/8066

btrfs sounds mightly cool.

Posted Jun 23, 2007 6:26 UTC (Sat) by Tomasu (subscriber, #39889) [Link]

The part I like about ZFS is the way you can dynamically allocate
physical volume space to any logical volume (aka: filesystem) at any
time.

Nothing else does that as far as I know. All you get is LVM2, EVMS,
or "mdraid" none of which can dynamically resize the volume and
underlying filesystem on the fly, and EASILY. resizing an ext partition
is imo, too hard, and you _can't_ shrink an XFS filesyste. Function isn't
supported.

btrfs sounds mightly cool.

Posted Jun 24, 2007 22:16 UTC (Sun) by dlang (subscriber, #313) [Link]

how much of this is a limitation of the technology (like the inability to shrink XFS) and how much is just a need for better userspace tools (like easily being able to resize extX)

don't mix one with the other.