Re: [patch] raid1: allow user to force reads from a specific disk

From: Neil Brown
Date: Sun Aug 06 2006 - 20:37:17 EST

On Sunday August 6, 76306.1226@xxxxxxxxxxxxxx wrote:
> Allow user to force raid1 to read all data from a given disk.
> This lets users do integrity checking by comparing results
> from reading different disks. If at any time the system finds
> it cannot read from the given disk it resets the disk number
> to -1, the default, which means to balance reads.

Could say a little bit more about why you want this?

You could get nearly the same situation be setting the other drives to

And the more thorough integrity check is available via
echo check > /sys/block/mdX/md/sync_action

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