From: Laurent CARON <lcaron@apartia.fr>
To: linux-raid@vger.kernel.org
Cc: Luca Berra <bluca@comedia.it>
Subject: Re: Bitmaps & Kernel Versions
Date: Thu, 16 Mar 2006 12:56:37 +0100 [thread overview]
Message-ID: <44195275.9010208@apartia.fr> (raw)
In-Reply-To: <20060315234333.GC25405@percy.comedia.it>
Luca Berra a écrit :
> On Wed, Mar 15, 2006 at 09:08:17PM +1100, Neil Brown wrote:
>
>> On Wednesday March 15, lcaron@unix-scripts.info wrote:
>>
>>> Hi,
>>>
>>> I'm planning to use bitmaps on some of our RAID1 arrays.
>>>
>>> I'm wondering how bitmaps are handeled by older kernels.
>>>
>>> Eg: I create a raid array with a bitmap under a 2.6.15 kernel.
>>>
>>> I now want to boot under 2.6.12, or even 2.4
>>>
>>>
>>> Hos is it handeled?
>>> Will it work even if this is my / partition?
>>
>>
>> On older kernel will not notice the bitmap and will behave
>> 'normally'.
>
> strange,
> last time i tried an older kernel would refuse to activate an md with a
> bitmap on it.
> I am far from home on a business trip and i don't have kernel-sources at
> hand, but i seem to remember that the kernel was very strict on the
> feature bitmap in the superblock.
>
> L.
>
I experienced the same strange behavior.
Bitmap was created on 2.6.15, tried to boot 2.6.14 and /dev/md0 was not
started :$.
Strange.....
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prev parent reply other threads:[~2006-03-16 11:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-15 9:12 Bitmaps & Kernel Versions Laurent CARON
2006-03-15 10:08 ` Neil Brown
2006-03-15 23:43 ` Luca Berra
2006-03-16 11:56 ` Laurent CARON [this message]
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