race between nvme device creation and discovery?

[Daniel Wagner]

On Mon, Feb 05, 2024 at 10:20:54AM +0100, Maurizio Lombardi wrote:
> po 5. 2. 2024 v 10:20 odesílatel Maurizio Lombardi <mlombard at redhat.com> napsal:
> >
> > I think I had a similar problem with nvme-stas some time ago, it tried
> > to delete a controller right after it appeared in sysfs, causing race conditions
> > with the init code path.
> 
> This is the problem I was talking about
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2eb94dd56a4a4e3fe286def3e2ba207804a37345

We have a 'state' attribute in sysfs already, though the
NVME_CTRL_STARTED_ONCE is modelled as flag. Not sure how this fits
together yet, so let me play with this.