Re: Linux Software RAID a bit of a weakness?

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On 2/26/07, Colin Simpson <csimpson@xxxxxxxxx> wrote:
If I say,

dd if=/dev/sda2 of=/dev/null

where /dev/sda2 is a component of an active md device.

Will the RAID subsystem get upset that someone else is fiddling with the
disk (even in just a read only way)? And will a read error on this dd
(caused by a bad block) cause md to knock out that device?

The MD subsystem doesn't care if someone else is reading the disk, and
I'm pretty sure that rear errors will be noticed by the MD system,
either.

-Dave
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