On 06/25/2012 04:00 PM, H. Peter Anvin wrote:
I am aware of that, and it is not a problem... the one-device
bootloader can find out *which* disk it is talking to by comparing
uuids, and the btrfs data structures will tell it how to find the data
on that specific disk. It does of course mean
On 06/25/2012 08:21 AM, Chris Mason wrote:
Yes and no. If you have 2 drives and you add one more, we can make it
do all new chunks over 3 drives. But, turning the existing double
mirror chunks into a triple mirror requires a balance.
-chris
So trigger one. This is the exact analogue to
On 06/25/2012 03:28 PM, Gareth Pye wrote:
To me one doesn't have to be triggered, a user expects to have to tell
the disks to rebuild/resync/balance after adding a disk, they may want
to wait till they've added all 4 disks and run a few extra commands
before they run the rebalance.
They do?
On Tue, Jun 26, 2012 at 8:37 AM, H. Peter Anvin h...@zytor.com wrote:
They do? E.g. mdadm doesn't make them...
Hrm, you are right. It is something I always confirm is happening
though. Without a M=N mode there would need to be two balances as the
first balance would be doing it wrong :(
--
On Mon, Jun 25, 2012 at 10:46:01AM -0700, H. Peter Anvin wrote:
On 06/25/2012 08:21 AM, Chris Mason wrote:
Yes and no. If you have 2 drives and you add one more, we can make it
do all new chunks over 3 drives. But, turning the existing double
mirror chunks into a triple mirror requires a
On 06/25/2012 03:54 PM, Hugo Mills wrote:
On Mon, Jun 25, 2012 at 10:46:01AM -0700, H. Peter Anvin wrote:
On 06/25/2012 08:21 AM, Chris Mason wrote:
Yes and no. If you have 2 drives and you add one more, we can
make it do all new chunks over 3 drives. But, turning the
existing double mirror
Yet another boot loader support request.
Right now btrfs' definition of RAID-1 with more than two devices is a
bit unorthodox: it stores on any two drives. True RAID-1 would
instead store N copies on each of N devices, the same way an actual
RAID-1 would operate with an arbitrary number of
On Wed, Jun 20, 2012 at 12:27 PM, H. Peter Anvin h...@zytor.com wrote:
Yet another boot loader support request.
Right now btrfs' definition of RAID-1 with more than two devices is a
bit unorthodox: it stores on any two drives. True RAID-1 would
instead store N copies on each of N devices,
On Wed, Jun 20, 2012 at 06:35:30PM -0600, Marios Titas wrote:
On Wed, Jun 20, 2012 at 12:27 PM, H. Peter Anvin h...@zytor.com wrote:
Yet another boot loader support request.
Right now btrfs' definition of RAID-1 with more than two devices is a
bit unorthodox: it stores on any two drives.
Could you have a mode, though, where M = N at all times, so a user doesn't end
up adding a new drive and get a nasty surprise?
Chris Mason chris.ma...@fusionio.com wrote:
On Wed, Jun 20, 2012 at 06:35:30PM -0600, Marios Titas wrote:
On Wed, Jun 20, 2012 at 12:27 PM, H. Peter Anvin
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