On 07/15/2011 06:01 PM, da...@lang.hm wrote:
On Fri, 15 Jul 2011, Ric Wheeler wrote:
On 07/15/2011 05:23 PM, da...@lang.hm wrote:
On Fri, 15 Jul 2011, Chris Mason wrote:
Excerpts from Ric Wheeler's message of 2011-07-15 08:58:04 -0400:
On 07/15/2011 12:34 PM, Chris Mason wrote:
By bubble
On Fri, 15 Jul 2011, Ric Wheeler wrote:
On 07/15/2011 05:23 PM, da...@lang.hm wrote:
On Fri, 15 Jul 2011, Chris Mason wrote:
Excerpts from Ric Wheeler's message of 2011-07-15 08:58:04 -0400:
On 07/15/2011 12:34 PM, Chris Mason wrote:
By bubble up I mean that if you have multiple layers cap
On 07/15/2011 05:23 PM, da...@lang.hm wrote:
On Fri, 15 Jul 2011, Chris Mason wrote:
Excerpts from Ric Wheeler's message of 2011-07-15 08:58:04 -0400:
On 07/15/2011 12:34 PM, Chris Mason wrote:
By bubble up I mean that if you have multiple layers capable of doing
retries, the lowest levels w
On Fri, 15 Jul 2011, Chris Mason wrote:
Excerpts from Ric Wheeler's message of 2011-07-15 08:58:04 -0400:
On 07/15/2011 12:34 PM, Chris Mason wrote:
By bubble up I mean that if you have multiple layers capable of doing
retries, the lowest levels would retry first. Basically by the time we
ge
On Fri, 15 Jul 2011, NeilBrown wrote:
On Thu, 14 Jul 2011 21:58:46 -0700 (PDT) da...@lang.hm wrote:
On Thu, 14 Jul 2011, Chris Mason wrote:
Excerpts from Ric Wheeler's message of 2011-07-14 02:57:54 -0400:
On 07/14/2011 07:38 AM, NeilBrown wrote:
On Thu, 14 Jul 2011 07:02:22 +0100 Ric Whee
Am Freitag, den 15.07.2011, 10:24 -0400 schrieb Chris Mason:
> Excerpts from Hugo Mills's message of 2011-07-15 10:07:24 -0400:
> > On Fri, Jul 15, 2011 at 10:00:35AM -0400, Chris Mason wrote:
> > > Excerpts from Ric Wheeler's message of 2011-07-15 09:31:37 -0400:
> > > > On 07/15/2011 02:20 PM, Ch
Excerpts from Hugo Mills's message of 2011-07-15 10:54:36 -0400:
> On Fri, Jul 15, 2011 at 10:24:25AM -0400, Chris Mason wrote:
> > Excerpts from Hugo Mills's message of 2011-07-15 10:07:24 -0400:
> > > On Fri, Jul 15, 2011 at 10:00:35AM -0400, Chris Mason wrote:
> > > > Excerpts from Ric Wheeler's
On Fri, Jul 15, 2011 at 10:24:25AM -0400, Chris Mason wrote:
> Excerpts from Hugo Mills's message of 2011-07-15 10:07:24 -0400:
> > On Fri, Jul 15, 2011 at 10:00:35AM -0400, Chris Mason wrote:
> > > Excerpts from Ric Wheeler's message of 2011-07-15 09:31:37 -0400:
> > > > On 07/15/2011 02:20 PM, Ch
Excerpts from Hugo Mills's message of 2011-07-15 10:07:24 -0400:
> On Fri, Jul 15, 2011 at 10:00:35AM -0400, Chris Mason wrote:
> > Excerpts from Ric Wheeler's message of 2011-07-15 09:31:37 -0400:
> > > On 07/15/2011 02:20 PM, Chris Mason wrote:
> > > > Excerpts from Ric Wheeler's message of 2011-
On Fri, Jul 15, 2011 at 10:00:35AM -0400, Chris Mason wrote:
> Excerpts from Ric Wheeler's message of 2011-07-15 09:31:37 -0400:
> > On 07/15/2011 02:20 PM, Chris Mason wrote:
> > > Excerpts from Ric Wheeler's message of 2011-07-15 08:58:04 -0400:
> > >> On 07/15/2011 12:34 PM, Chris Mason wrote:
>
Excerpts from Ric Wheeler's message of 2011-07-15 09:31:37 -0400:
> On 07/15/2011 02:20 PM, Chris Mason wrote:
> > Excerpts from Ric Wheeler's message of 2011-07-15 08:58:04 -0400:
> >> On 07/15/2011 12:34 PM, Chris Mason wrote:
> > [ triggering IO retries on failed crc or other checks ]
> >
> >>>
On Fri, Jul 15, 2011 at 8:58 AM, Ric Wheeler wrote:
> On 07/15/2011 12:34 PM, Chris Mason wrote:
>>
>> Excerpts from NeilBrown's message of 2011-07-15 02:33:54 -0400:
>>>
>>> On Thu, 14 Jul 2011 21:58:46 -0700 (PDT) da...@lang.hm wrote:
>>>
On Thu, 14 Jul 2011, Chris Mason wrote:
> E
On 07/15/2011 02:20 PM, Chris Mason wrote:
Excerpts from Ric Wheeler's message of 2011-07-15 08:58:04 -0400:
On 07/15/2011 12:34 PM, Chris Mason wrote:
[ triggering IO retries on failed crc or other checks ]
But, maybe the whole btrfs model is backwards for a generic layer.
Instead of sending
Excerpts from Ric Wheeler's message of 2011-07-15 08:58:04 -0400:
> On 07/15/2011 12:34 PM, Chris Mason wrote:
[ triggering IO retries on failed crc or other checks ]
> >
> > But, maybe the whole btrfs model is backwards for a generic layer.
> > Instead of sending down ios and testing when they c
On 07/15/2011 12:34 PM, Chris Mason wrote:
Excerpts from NeilBrown's message of 2011-07-15 02:33:54 -0400:
On Thu, 14 Jul 2011 21:58:46 -0700 (PDT) da...@lang.hm wrote:
On Thu, 14 Jul 2011, Chris Mason wrote:
Excerpts from Ric Wheeler's message of 2011-07-14 02:57:54 -0400:
On 07/14/2011 07
Excerpts from NeilBrown's message of 2011-07-15 02:33:54 -0400:
> On Thu, 14 Jul 2011 21:58:46 -0700 (PDT) da...@lang.hm wrote:
>
> > On Thu, 14 Jul 2011, Chris Mason wrote:
> >
> > > Excerpts from Ric Wheeler's message of 2011-07-14 02:57:54 -0400:
> > >> On 07/14/2011 07:38 AM, NeilBrown wrote:
On Thu, 14 Jul 2011 21:58:46 -0700 (PDT) da...@lang.hm wrote:
> On Thu, 14 Jul 2011, Chris Mason wrote:
>
> > Excerpts from Ric Wheeler's message of 2011-07-14 02:57:54 -0400:
> >> On 07/14/2011 07:38 AM, NeilBrown wrote:
> >>> On Thu, 14 Jul 2011 07:02:22 +0100 Ric Wheeler
> >>> wrote:
> >>>
>
On Thu, 14 Jul 2011, Chris Mason wrote:
Excerpts from Ric Wheeler's message of 2011-07-14 02:57:54 -0400:
On 07/14/2011 07:38 AM, NeilBrown wrote:
On Thu, 14 Jul 2011 07:02:22 +0100 Ric Wheeler wrote:
I'm certainly open to suggestions and collaboration. Do you have in mind any
particular w
Excerpts from Ric Wheeler's message of 2011-07-14 02:57:54 -0400:
> On 07/14/2011 07:38 AM, NeilBrown wrote:
> > On Thu, 14 Jul 2011 07:02:22 +0100 Ric Wheeler wrote:
> >
> >>> I'm certainly open to suggestions and collaboration. Do you have in mind
> >>> any
> >>> particular way to make the int
On Thu, Jul 14, 2011 at 12:50 PM, John Stoffel wrote:
>> "Alasdair" == Alasdair G Kergon writes:
>
> Alasdair> On Thu, Jul 14, 2011 at 04:38:36PM +1000, Neil Brown wrote:
>>> It might make sense for a device to be able to report what the maximum
>>> 'N' supported is... that might make stacke
On Thu, 14 Jul 2011, John Stoffel wrote:
Alasdair> I'll just say that any solution ought to be stackable.
I've been mulling this over too and wondering how you'd handle this,
because upper layers really can't peak down into lower layers easily.
As far as I understand things.
So if you have btr
On Wed, Jun 29, 2011 at 3:47 AM, A. James Lewis wrote:
> Is there a possibility that one could have a 3 disk RAID5 array, and
> then add a 4th disk and then do a balance, growing the RAID5 onto 4
> disks and gaining the space still with RAID5? It seems that to be
> consistent, BTRFS would have t
> "Alasdair" == Alasdair G Kergon writes:
Alasdair> On Thu, Jul 14, 2011 at 04:38:36PM +1000, Neil Brown wrote:
>> It might make sense for a device to be able to report what the maximum
>> 'N' supported is... that might make stacked raid easier to manage...
Alasdair> I'll just say that any
On Thu, Jul 14, 2011 at 04:38:36PM +1000, Neil Brown wrote:
> It might make sense for a device to be able to report what the maximum
> 'N' supported is... that might make stacked raid easier to manage...
I'll just say that any solution ought to be stackable.
This means understanding both that the
On 07/14/2011 08:38 AM, NeilBrown wrote:
> On Thu, 14 Jul 2011 07:02:22 +0100 Ric Wheeler wrote:
>
>>> I'm certainly open to suggestions and collaboration. Do you have in mind
>>> any
>>> particular way to make the interface richer??
>>>
>>> NeilBrown
>>
>> Hi Neil,
>>
>> I know that Chris has
On Thu, 14 Jul 2011 11:37:41 +0200 Jan Schmidt
wrote:
> Hi Neil,
>
> On 14.07.2011 08:38, NeilBrown wrote:
> > I imagine a new field in 'struct bio' which was normally zero but could be
> > some small integer. It is only meaningful for read.
> > When 0 it means "get this data way you like".
> >
Hi Neil,
On 14.07.2011 08:38, NeilBrown wrote:
> I imagine a new field in 'struct bio' which was normally zero but could be
> some small integer. It is only meaningful for read.
> When 0 it means "get this data way you like".
> When non-zero it means "get this data using method N", where the diff
On 14.07.2011 08:02, Ric Wheeler wrote:
On 07/14/2011 06:56 AM, NeilBrown wrote:
I'm certainly open to suggestions and collaboration. Do you have in
mind any
particular way to make the interface richer??
If a file system uses checksumming or other data corruption detection
bits, it can detect
On 07/14/2011 07:38 AM, NeilBrown wrote:
On Thu, 14 Jul 2011 07:02:22 +0100 Ric Wheeler wrote:
I'm certainly open to suggestions and collaboration. Do you have in mind any
particular way to make the interface richer??
NeilBrown
Hi Neil,
I know that Chris has a very specific set of use case
On Thu, 14 Jul 2011 07:02:22 +0100 Ric Wheeler wrote:
> > I'm certainly open to suggestions and collaboration. Do you have in mind
> > any
> > particular way to make the interface richer??
> >
> > NeilBrown
>
> Hi Neil,
>
> I know that Chris has a very specific set of use cases for btrfs and
On 07/14/2011 06:56 AM, NeilBrown wrote:
On Wed, 29 Jun 2011 10:29:53 +0100 Ric Wheeler wrote:
On 06/27/2011 07:46 AM, NeilBrown wrote:
On Thu, 23 Jun 2011 12:53:37 +0200 Nico Schottelius
wrote:
Good morning devs,
I'm wondering whether the raid- and volume-management-builtin of btrfs is
On Wed, 29 Jun 2011 10:29:53 +0100 Ric Wheeler wrote:
> On 06/27/2011 07:46 AM, NeilBrown wrote:
> > On Thu, 23 Jun 2011 12:53:37 +0200 Nico Schottelius
> > wrote:
> >
> >> Good morning devs,
> >>
> >> I'm wondering whether the raid- and volume-management-builtin of btrfs is
> >> actually a san
On Wed, 2011-06-29 at 10:29 +0100, Ric Wheeler wrote:
> On 06/27/2011 07:46 AM, NeilBrown wrote:
> > On Thu, 23 Jun 2011 12:53:37 +0200 Nico Schottelius
> > wrote:
> >
> >> Good morning devs,
> >>
> >> I'm wondering whether the raid- and volume-management-builtin of btrfs is
> >> actually a sane
On 06/27/2011 07:46 AM, NeilBrown wrote:
On Thu, 23 Jun 2011 12:53:37 +0200 Nico Schottelius
wrote:
Good morning devs,
I'm wondering whether the raid- and volume-management-builtin of btrfs is
actually a sane idea or not.
Currently we do have md/device-mapper support for raid
already, btrfs
- Forwarded message from Nico Schottelius
-
To: LKML
Date: Thu, 23 Jun 2011 12:53:37 +0200
From: Nico Schottelius
Subject: Mis-Design of Btrfs?
Good morning devs,
I'm wondering whether the raid- and volume-management-builtin of btrfs is
actually a sane idea or not.
Currently
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