Re: [linux-lvm] Advanced Format disks mixed with regular disks?

[Ron Johnson <ron.l.johnson@cox.net>]

On 03/14/2011 01:02 PM, Mike Snitzer wrote:
> On Mon, Mar 14 2011 at  1:32pm -0400,
> Les Mikesell<lesmikesell@gmail.com>  wrote:
>
>> On 3/14/2011 12:17 PM, Mike Snitzer wrote:
>>>
>>>> Is there any concern with mixing 4KB-sector drives with 512-byte
>>>> sector drives in the same LV?
>>>
>>> Both LVM2 and Device Mapper have been updated to accommodate stacking
>>> such a mix of drives.
>>>
>>> See this for a bit more detail:
>>> http://people.redhat.com/msnitzer/docs/io-limits.txt
>>>
>>> Particularly, the "Stacking I/O Limits" section.
>>>
>>> The concern raised for partial (4k) writes to the 512b drive was
>>> discussed a bit more here: http://lkml.org/lkml/2010/2/22/295
>>
>> Are there any version-level hints about when/where these changes
>> appear and come together in the real world (i.e. distributions like
>> RHEL, debian, Ubuntu)?
>
> For the kernel, the bulk of associated infrastructure (ata, scsi, block,
> dm, md, etc) went in 2.6.31, 2.6.32 saw some improvements, and 2.6.33
> and 2.6.34 saw a few bug fixes.
>
> v2.6.32.11 saw a backport of the 2.6.33 and 2.6.34 bug fixes via commit
> 9b2ff97
>
> RHEL6 has all this.  I cannot speak for debian and/or Ubuntu.
>
> As for LVM2, you'd want>= 2.02.62.
>

Thanks...

$ cat /etc/debian_version
wheezy/sid

$ /sbin/lvm version
   LVM version:     2.02.84(2) (2011-02-09)
   Library version: 1.02.63 (2011-02-09)

$ uname -r
2.6.37-2-amd64

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