Recognizing SMR HDDs

From: Gary Jennejohn <gljennjohn_at_gmail.com>
Date: Thu, 26 May 2016 08:42:53 +0200
Now that ken_at_ has checked in the SMR code I'm wondering how I can see
whether it's having any effect.

I have a 8TB SMR disk in a USB3 enclosure.  Does the kernel emit any
sort of trace to indicate that it sees the drive as SMR and takes
that into account?

I have the probe trace enabled in my kernel config, but I don't see
anything special pop out when I turn the drive on.

Does the fact that the drive appears as a /dev/daX play any role?

BTW the disk returns an error when multiple LUNs are probed.

-- 
Gary Jennejohn
Received on Thu May 26 2016 - 04:43:05 UTC

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