Re: LVM on md0: raid0_make_request bug: can't convert block across chunks or bigger than 64k

From: Neil Brown
Date: Mon Oct 27 2003 - 20:09:35 EST


On Saturday October 25, karl.vogel@xxxxxxxxxx wrote:
>
>
> I noticed in the 2.6.0-test9 notes the following:
>
> ---
> Neil Brown:
> o md - Use sector rather than block numbers when splitting raid0
> requests
> ---
>
> I'm not sure if this is related to the problem I was experiencing?!
> Anyway this doesn't fix the problem I was having. I still get the errors
> with -test9. Above patch to dm-table.c works for me.
>
> Just thought I'd mention this..
>
This addresses a different problem: raid0 would not correctly handle
some requests that are not 1K aligned. XFS does some non-1K-aligned
requests where reading it's journal and caught this bug.
It has nothing to do with LVM or your problem.

NeilBrown

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