On Tue, Feb 27 2024 at 10:10P -0500,
Christoph Hellwig [off-list ref] wrote:

On Fri, Feb 23, 2024 at 12:38:46PM -0500, Mike Snitzer wrote:

quoted

Also, you can use the lvm2 source code's testsuite to get really solid
DM test coverge (particularly for changes in this patchset which is
dealing with setting limits at device creation).

And that one runs fine, although even with Jens' tree as a baseline
it hangs in the md code when dm tries to stop it.  Trying mainline
now..

That's the mainline issue a bunch of MD (and dm-raid) oriented
engineers are working hard to fix, they've been discussing on
linux-raid (with many iterations of proposed patches).

It regressed due to 6.8 MD changes (maybe earlier).

Mike