lsblk odd results

[Colin Law]

On Fri, 22 Feb 2019 at 09:30, Grizzly via ubuntu-users
<ubuntu-users at lists.ubuntu.com> wrote:
>
> 22 February 2019  at 9:35, Ralf Mardorf via ubuntu-users wrote:
> Re: lsblk odd results (at least in part)
>
> >On Fri, 2019-02-22 at 08:11 +0000, Grizzly wrote:
> >> 22 February 2019  at 8:32, Ralf Mardorf wrote:
> >> > the output is correct, your reasoning isn't.
> >> > 0 = true  or right
> >> > 1 = false or wrong
>
> >> your own results confirm what I said
>
> >> Your SSD's return 0 & your DVD returns 1
>
> >> So by your reasoning you would have 4 rotational devices and a non rotational
> >> DVD ?
>
> >Oops, you are right. However, the output is still correct, my reasoning
> >wasn't.
>
> Your output was correct but my own case still seems off, the USB sticks
> "should" not appear as rotational? and that brings the validity of my test(s)
> into question, I could be wrong about which (if any) of my drives are SSD's but
> not wrong about the USB sticks

My suspicion is that the system cannot tell whether a USB stick is
rotational or not (it may be a USB plugin rotational disc or plugin
SSD), though I may well be wrong and shall not be surprised if someone
corrects me.

Colin