nightly-run: nvme dsm commands fails with `No valid range definition provided`

[igaw]

The recent update how the dsm commands work #2984 break the nightly builds:

https://github.com/linux-nvme/nvme-cli/actions/runs/19764778685/job/56634825901

 nvme/019 (tr=loop bd=file) (test NVMe DSM Discard command)  
nvme/019 (tr=loop bd=file) (test NVMe DSM Discard command)   [failed]
    runtime    ...  0.927s
    --- tests/nvme/019.out	2025-11-28 13:20:17.280533703 +0000
    +++ /home/fedora/blktests/results/nodev_tr_loop_bd_file/nvme/019.out.bad	2025-11-28 13:31:09.544319913 +0000
    @@ -1,4 +1,4 @@
     Running nvme/019
    -NVMe DSM: success
    +No valid range definition provided

[igaw]

According the spec, the 'Context Attribute' is optional, thus the newly introduce check is too restrictive.

	local nblk_range="10,10,10,10,10,10,10,10,10,10"
	local sblk_range="100,200,300,400,500,600,700,800,900,1000"

	[...]

	nvme dsm "/dev/${ns}" --ad \
		--slbs "${sblk_range}" --blocks "${nblk_range}"

[igaw]

nvme-cli tests framework also fails at the dsm command:

 ======================================================================
FAIL: test_dsm (nvme_dsm_test.TestNVMeDsm.test_dsm)
Testcase main
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/nvme-cli/tests/nvme_dsm_test.py", line 55, in test_dsm
    self.assertEqual(self.dsm(), 0)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
AssertionError: 1 != 0

----------------------------------------------------------------------
Ran 20 tests in 106.171s

But here is the test command broken:

        dsm_cmd = f"{self.nvme_bin} dsm {self.ctrl} " + \
            f"--namespace-id={str(self.namespace)} " + \
            f"--blocks={str(self.range)} --slbs={str(self.start_block)}"

[edit: nope all good.]