From: Luca Berra <bluca@comedia.it>
To: linux-raid@vger.kernel.org
Subject: Re: Bitmaps & Kernel Versions
Date: Thu, 16 Mar 2006 00:43:33 +0100 [thread overview]
Message-ID: <20060315234333.GC25405@percy.comedia.it> (raw)
In-Reply-To: <17431.59281.909724.299333@cse.unsw.edu.au>
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.
--
Luca Berra -- bluca@comedia.it
Communication Media & Services S.r.l.
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next prev parent reply other threads:[~2006-03-15 23:43 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 [this message]
2006-03-16 11:56 ` Laurent CARON
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