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Old 06-26-2012, 08:44 AM
Jonathan Brassow
 
Default MD: prepare RAID10 for inclusion in dm-raid.c

Neil,

Here's a couple patches that are necessary for MD before I can add
RAID10 to the list of supported personalities through dm-raid.c:
1) md-raid10-rename-mirror_info.patch
2) md-raid1-rename-mirror_info.patch
3) md-move-IO_BLOCKED-to-md_h.patch
4) md-export-md_raid10_congested.patch

I'll send the patch that enables raid10 as a separate patch that depends
on this patch set and a couple of DM patches.

brassow


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Old 07-04-2012, 01:13 AM
NeilBrown
 
Default MD: prepare RAID10 for inclusion in dm-raid.c

On Tue, 26 Jun 2012 03:44:19 -0500 Jonathan Brassow <jbrassow@redhat.com>
wrote:

> Neil,
>
> Here's a couple patches that are necessary for MD before I can add
> RAID10 to the list of supported personalities through dm-raid.c:
> 1) md-raid10-rename-mirror_info.patch
> 2) md-raid1-rename-mirror_info.patch
> 3) md-move-IO_BLOCKED-to-md_h.patch
> 4) md-export-md_raid10_congested.patch
>
> I'll send the patch that enables raid10 as a separate patch that depends
> on this patch set and a couple of DM patches.
>
> brassow
>

All 4 applied, thanks.

NeilBrown
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Old 07-06-2012, 08:40 AM
CoolCold
 
Default MD: prepare RAID10 for inclusion in dm-raid.c

On Tue, Jun 26, 2012 at 12:44 PM, Jonathan Brassow <jbrassow@redhat.com> wrote:

Neil,



Here's a couple patches that are necessary for MD before I can add

RAID10 to the list of supported personalities through dm-raid.c:

* * * * 1) md-raid10-rename-mirror_info.patch

* * * * 2) md-raid1-rename-mirror_info.patch

* * * * 3) md-move-IO_BLOCKED-to-md_h.patch

* * * * 4) md-export-md_raid10_congested.patch



I'll send the patch that enables raid10 as a separate patch that depends

on this patch set and a couple of DM patches.


Can you explain a bit more detailed for me, what is this about? I.e. from my point of view dm-raid and md-raid and fully separated but looks like I'm wrong and missing something.
*

*brassow





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Old 07-06-2012, 07:32 PM
Brassow Jonathan
 
Default MD: prepare RAID10 for inclusion in dm-raid.c

On Jul 6, 2012, at 3:40 AM, CoolCold wrote:

>
>
> On Tue, Jun 26, 2012 at 12:44 PM, Jonathan Brassow <jbrassow@redhat.com> wrote:
> Neil,
>
> Here's a couple patches that are necessary for MD before I can add
> RAID10 to the list of supported personalities through dm-raid.c:
> 1) md-raid10-rename-mirror_info.patch
> 2) md-raid1-rename-mirror_info.patch
> 3) md-move-IO_BLOCKED-to-md_h.patch
> 4) md-export-md_raid10_congested.patch
>
> I'll send the patch that enables raid10 as a separate patch that depends
> on this patch set and a couple of DM patches.
>
> Can you explain a bit more detailed for me, what is this about? I.e. from my point of view dm-raid and md-raid and fully separated but looks like I'm wrong and missing something.

drivers/md/dm-raid.c is a device-mapper target that provides access to the MD personalities. So far, MD's RAID 1/4/5/6 have been made available to the device-mapper interface through this module. We are laying the ground work here for RAID10 to be made available in the same way.

You may wish to have a look at linux/Documentation/device-mapper/dm-raid.txt for additional information. Also note that in "[PATCH 4 of 4] MD RAID10: Export md_raid10_congested", I referenced a couple of other times that these types of changes were necessary.

Thanks,
brassow


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