* [linux-lvm] Is the new RAID implementation going to deprecate traditional stripes and mirrors?
@ 2012-05-19 18:58 ben
2012-05-19 19:10 ` Alasdair G Kergon
0 siblings, 1 reply; 4+ messages in thread
From: ben @ 2012-05-19 18:58 UTC (permalink / raw)
To: linux-lvm
Does all the new RAID MD support mean the standard LVM type of mirrors and
stripes will go away or at least not be further developed?
Thank you.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [linux-lvm] Is the new RAID implementation going to deprecate traditional stripes and mirrors?
2012-05-19 18:58 [linux-lvm] Is the new RAID implementation going to deprecate traditional stripes and mirrors? ben
@ 2012-05-19 19:10 ` Alasdair G Kergon
2012-05-19 20:31 ` Ron Johnson
0 siblings, 1 reply; 4+ messages in thread
From: Alasdair G Kergon @ 2012-05-19 19:10 UTC (permalink / raw)
To: ben; +Cc: linux-lvm
On Sat, May 19, 2012 at 11:58:54AM -0700, ben wrote:
> Does all the new RAID MD support mean the standard LVM type of mirrors and
> stripes will go away or at least not be further developed?
Current thinking:
Stripes remain as-is (they're very simple, it's not worth changing).
Preferred mirror switches to md, but existing mirror implementation
remains available and continues to be used for temporary mirrors like
pvmove.
Alasdair
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [linux-lvm] Is the new RAID implementation going to deprecate traditional stripes and mirrors?
2012-05-19 19:10 ` Alasdair G Kergon
@ 2012-05-19 20:31 ` Ron Johnson
2012-05-22 19:08 ` Brassow Jonathan
0 siblings, 1 reply; 4+ messages in thread
From: Ron Johnson @ 2012-05-19 20:31 UTC (permalink / raw)
To: linux-lvm
On 05/19/2012 02:10 PM, Alasdair G Kergon wrote:
> On Sat, May 19, 2012 at 11:58:54AM -0700, ben wrote:
>> Does all the new RAID MD support mean the standard LVM type of mirrors and
>> stripes will go away or at least not be further developed?
>
> Current thinking:
>
> Stripes remain as-is (they're very simple, it's not worth changing).
>
> Preferred mirror switches to md, but existing mirror implementation
> remains available and continues to be used for temporary mirrors like
> pvmove.
>
IOW, md is "best practice" for mirroring?
--
"There is usually only a limited amount of damage that can be
done by dull or stupid people. For creating a truly monumental
disaster, you need people with high IQs."
Thomas Sowell
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [linux-lvm] Is the new RAID implementation going to deprecate traditional stripes and mirrors?
2012-05-19 20:31 ` Ron Johnson
@ 2012-05-22 19:08 ` Brassow Jonathan
0 siblings, 0 replies; 4+ messages in thread
From: Brassow Jonathan @ 2012-05-22 19:08 UTC (permalink / raw)
To: LVM general discussion and development
On May 19, 2012, at 3:31 PM, Ron Johnson wrote:
> On 05/19/2012 02:10 PM, Alasdair G Kergon wrote:
>> On Sat, May 19, 2012 at 11:58:54AM -0700, ben wrote:
>>> Does all the new RAID MD support mean the standard LVM type of mirrors and
>>> stripes will go away or at least not be further developed?
>>
>> Current thinking:
>>
>> Stripes remain as-is (they're very simple, it's not worth changing).
>>
>> Preferred mirror switches to md, but existing mirror implementation
>> remains available and continues to be used for temporary mirrors like
>> pvmove.
>>
>
> IOW, md is "best practice" for mirroring?
I would say so. It has a number of improvements over the original that help it deal better with snapshots and transient failures.
You can make the "raid1" segment type the default type by setting 'mirror_segtype_default' in lvm.conf.
brassow
^ permalink raw reply [flat|nested] 4+ messages in thread
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2012-05-19 18:58 [linux-lvm] Is the new RAID implementation going to deprecate traditional stripes and mirrors? ben
2012-05-19 19:10 ` Alasdair G Kergon
2012-05-19 20:31 ` Ron Johnson
2012-05-22 19:08 ` Brassow Jonathan
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