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charset="us-ascii" Content-ID: <9B534E9E0EDECA4C84629C69685CC4AC@namprd04.prod.outlook.com> Content-Transfer-Encoding: quoted-printable Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 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 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: SN7PR04MB8532.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: a977013d-3156-4de3-64a6-08de598d7163 X-MS-Exchange-CrossTenant-originalarrivaltime: 22 Jan 2026 08:08:36.0753 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: iQ8z4axrQqMvklYaqiO0/7lzG5SrmRiqeCp668NSqEBw13NUFbxzlAQLIVQWqUaVydtMKagb4l/j7ppBi3FqgfVCQ35T5EWmBnOZBVyfaY4= X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR04MB6982 On Jan 21, 2026 / 15:36, Daniel Wagner wrote: > Add a bcache entry in running-tests which explains how to configure > blktests for the bcache tests. >=20 > Signed-off-by: Daniel Wagner > --- > Documentation/running-tests.md | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+) >=20 > diff --git a/Documentation/running-tests.md b/Documentation/running-tests= .md > index f9da042bb3a0..c4abc6767cd0 100644 > --- a/Documentation/running-tests.md > +++ b/Documentation/running-tests.md > @@ -189,6 +189,22 @@ THROTL_BLKDEV_TYPES=3D"sdebug" ./check throtl/ > THROTL_BLKDEV_TYPES=3D"nullb sdebug" ./check throtl/ > ``` > =20 > +### bcache test configuration > + > +The bcache tests require multiple devices to run simultaneously. By defa= ult, > +blktests executes each test case iteratively for every individual device= listed > +in TEST_DEVS. This standard behavior makes it impossible to pass a group= of > +devices into a single test via TEST_DEVS. > + > +To solve this, the TEST_CASE_DEV_ARRAY was introduced. This allows for c= ustom > +device configurations on a per-test basis. For bcache tests, a minimum o= f three > +devices is required. Configuration Example > + > +Add the following to your configuration to define the devices used for a= ll > +bcache tests: As you noted in the cover letter, TEST_CASE_DEV_ARRAY is already described = in running-tests.md. So I think this section can be some more concise. My quic= k rewrite is as follows. If it makes sense for you, please consider to pick i= t up. ### Bcache test configuration The bcache tests require multiple devices to run simultaneously. By default= , blktests run each test case for each device in TEST_DEVS. This behavior prevents testing with multiple devices. The TEST_CASE_DEV_ARRAY resolves th= is by enabling multiple device configurations per test. Bcache tests need at least three devices, which can be specified in your configuration as follow= s: > + > +TEST_CASE_DEV_ARRAY[bcache/*]=3D"/dev/nvme0n1 /dev/vdb /dev/vdc" > + > ### Normal user > =20 > To run test cases which require normal user privilege, prepare a user an= d >=20 > --=20 > 2.52.0 > =