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Go Back   Linux Archive > Redhat > Device-mapper Development

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Old 05-18-2012, 03:14 PM
Joe Thornber
Default dm thin: fix table output when pool target disables discard passdown internally

On Fri, May 18, 2012 at 11:04:01AM -0400, Mike Snitzer wrote:
> When the thin pool target clears the discard_passdown parameter
> internally, it incorrectly reports this to userspace on the table line.
> This patch corrects this by no longer changing the table line to reflect
> that discard passdown was disabled.
> We can still tell when discard passdown is overridden by looking for the
> message "Discard unsupported by data device (sdX): Disabling discard passdown."
> Signed-off-by: Mike Snitzer <snitzer@redhat.com>


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