Q: imsm rapid recovery volume

Q: imsm rapid recovery volume

[Luca Berra]

Hello,
i got hold of a new laptop that supports Intel Rapid Recover Technology
http://www.intel.com/support/chipsets/imsm/sb/cs-026142.htm
it sounds cool,
does this feature work with mdadm?

Thanks in advance and regards,
L.

-- 
Luca Berra -- bluca@comedia.it

Re: Q: imsm rapid recovery volume

[Roberto Spadim]

how it works on linux? it's a block device for linux? like: /dev/sda?
if yes, i don't see problems using it with mdadm (software raid). but
i think that it's a intel hardware raid, i'm right?

2011/3/14 Luca Berra <bluca@comedia.it>:
> Hello,
> i got hold of a new laptop that supports Intel Rapid Recover Technology
> http://www.intel.com/support/chipsets/imsm/sb/cs-026142.htm
> it sounds cool,
> does this feature work with mdadm?
>
> Thanks in advance and regards,
> L.
>
> --
> Luca Berra -- bluca@comedia.it
> --
> To unsubscribe from this list: send the line "unsubscribe linux-raid" in
> the body of a message to majordomo@vger.kernel.org
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>



-- 
Roberto Spadim
Spadim Technology / SPAEmpresarial
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RE: Q: imsm rapid recovery volume

[Jiang, Dave]

> -----Original Message-----
> From: linux-raid-owner@vger.kernel.org [mailto:linux-raid-
> owner@vger.kernel.org] On Behalf Of Roberto Spadim
> Sent: Monday, March 14, 2011 7:08 AM
> To: linux-raid@vger.kernel.org
> Cc: Luca Berra
> Subject: Re: Q: imsm rapid recovery volume
> 
> how it works on linux? it's a block device for linux? like: /dev/sda?
> if yes, i don't see problems using it with mdadm (software raid). but i think
> that it's a intel hardware raid, i'm right?
> 
> 2011/3/14 Luca Berra <bluca@comedia.it>:
> > Hello,
> > i got hold of a new laptop that supports Intel Rapid Recover
> > Technology http://www.intel.com/support/chipsets/imsm/sb/cs-
> 026142.htm
> > it sounds cool,
> > does this feature work with mdadm?
> >
> > Thanks in advance and regards,
> > L.
> >
> > --
> > Luca Berra -- bluca@comedia.it

No this is Intel BIOS RAID. You need a kernel that's fairly recent and mdadm that supports external metadata so once again something fairly recent. Fedora supports this out of box if you want a free distro. Ubuntu does not last time I checked because grub2 doesn't seem to work properly yet with IMSM, but I know they are putting in new code to support it. 

I have updated the RAID wiki. Please take a look here:
https://raid.wiki.kernel.org/index.php/RAID_setup#External_Metadata

Re: Q: imsm rapid recovery volume

[Luca Berra]

On Mon, Mar 14, 2011 at 08:28:05AM -0700, Jiang, Dave wrote:
>No this is Intel BIOS RAID. You need a kernel that's fairly recent and mdadm that supports external metadata so once again something fairly recent. Fedora supports this out of box if you want a free distro. Ubuntu does not last time I checked because grub2 doesn't seem to work properly yet with IMSM, but I know they are putting in new code to support it. 
>
>I have updated the RAID wiki. Please take a look here:
>https://raid.wiki.kernel.org/index.php/RAID_setup#External_Metadata
>
Dave,
There does not seem to be any information regarding rapid recovery on
the wiki.
Are you implying it just works?
I tried to set one up under windows with continuous update policy, but
when i rebooted under linux it looked like the recovery disk was failed.
I am usink kernel 2.6.36.2 and mdadm 3.1.2, raid1 on a similar config
was working correctly.

Thanks in advance and regards,
L.

-- 
Luca Berra -- bluca@comedia.it

RE: Q: imsm rapid recovery volume

[Jiang, Dave]

> -----Original Message-----
> From: Luca Berra [mailto:bluca@comedia.it]
> Sent: Monday, March 14, 2011 12:18 PM
> To: Jiang, Dave
> Cc: linux-raid@vger.kernel.org
> Subject: Re: Q: imsm rapid recovery volume
> 
> On Mon, Mar 14, 2011 at 08:28:05AM -0700, Jiang, Dave wrote:
> >No this is Intel BIOS RAID. You need a kernel that's fairly recent and mdadm
> that supports external metadata so once again something fairly recent.
> Fedora supports this out of box if you want a free distro. Ubuntu does not
> last time I checked because grub2 doesn't seem to work properly yet with
> IMSM, but I know they are putting in new code to support it.
> >
> >I have updated the RAID wiki. Please take a look here:
> >https://raid.wiki.kernel.org/index.php/RAID_setup#External_Metadata
> >
> Dave,
> There does not seem to be any information regarding rapid recovery on the
> wiki.
> Are you implying it just works?
> I tried to set one up under windows with continuous update policy, but when
> i rebooted under linux it looked like the recovery disk was failed.
> I am usink kernel 2.6.36.2 and mdadm 3.1.2, raid1 on a similar config was
> working correctly.
> 
> Thanks in advance and regards,
> L.
> 
> --
> Luca Berra -- bluca@comedia.it

Linux IMSM does not support Rapid Recovery. That is a Windows IMSM feature.

Re: Q: imsm rapid recovery volume

[Luca Berra]

On Mon, Mar 14, 2011 at 05:27:14PM -0700, Jiang, Dave wrote:
>Linux IMSM does not support Rapid Recovery. That is a Windows IMSM feature.

Sorry for necromancy.

Is there any plan to implement this feature in mdadm,
or any reason not to?

Thanks in advance and regards,
L.

-- 
Luca Berra -- bluca@comedia.it

Re: Q: imsm rapid recovery volume

[NeilBrown]

On Wed, 7 Sep 2011 08:02:06 +0200 Luca Berra <bluca@comedia.it> wrote:

> On Mon, Mar 14, 2011 at 05:27:14PM -0700, Jiang, Dave wrote:
> >Linux IMSM does not support Rapid Recovery. That is a Windows IMSM feature.
> 
> Sorry for necromancy.
> 
> Is there any plan to implement this feature in mdadm,
> or any reason not to?

The core functionality is available for native md via bitmaps are re-add.
But you have to manage it yourself.

I know of know plans to add any support for this functionality with IMSM
metadata - the current focus seems to be getting the bugs out of OnLine
Capacity Expansion.

NeilBrown


> 
> Thanks in advance and regards,
> L.
>