[Discuss] btrfs

[warlord at MIT.EDU (Derek Atkins)]

Dan Ritter <dsr at randomstring.org> writes:

> On Tue, Feb 26, 2013 at 11:00:58AM -0500, Derek Atkins wrote:
>> Dan Ritter <dsr at randomstring.org> writes:
>> 
>> > +++
>> >  How much space do I get with unequal devices in RAID-1 mode?
>> 
>> I presume this is also true of RAID-10 mode?
>
> I haven't done this myself, and I'm not sure.

Fair enough.

>> If you add new disks to an existing array (to grow the array) will it
>> rebalance the stripes across the new disks?  If so, will it do it
>> automatically or does it require a user process to rebalance?  (Note
>> that rebalancing slowly is fine for my usage, provided it's a live
>> rebalance).   I've a similar question about replacing a disk with a
>> larger one -- will it properly rebalance?
>
> Yes it can be rebalanced; no, it's not automatic. The command is
> btrfs balance, and it can be paused, resumed and cancelled. The
> same holds true for replacing disks.

AWESOME.  Now if only there were a FreeNAS equivalent based on BTRFS
instead of ZFS ;)

Maybe it'll happen by the time I'm ready to build a NAS server.  It
sounds like BTRFS will be exactly what I want.

> -dsr-

-derek

-- 
       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
       Member, MIT Student Information Processing Board  (SIPB)
       URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
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