Subject: Re: DEV_B_SIZE
To: Julian Elischer <>
From: None <>
List: tech-kern
Date: 01/31/2003 20:58:27
In message <>, Ju
lian Elischer writes:
>One thign I thought of is that it is not uncommon to 'dd' an entire
>filesystem from one partition to another.
>If we create a filesystem that is 'aligned' and we copy it to be 
>'unalligned', we'd have a sudden performance drop for no immediatly
>obvious reason. What was one write, would become a 2-sector read,
>modify and 2-sector write. Especially when copying from one failing
>drive to another with slightly different characteristics.

If you run dd without bs=ALOT you deserve bad throughput.

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