Hi Geert,

On Fri, Jan 12, 2024 at 1:28 AM Geert Uytterhoeven [off-list ref] wrote:

[...]

quoted

--- a/drivers/md/Kconfig
+++ b/drivers/md/Kconfig

@@ -61,19 +61,6 @@ config MD_BITMAP_FILE
          various kernel APIs and can only work with files on a file system not
          actually sitting on the MD device.

-config MD_LINEAR
-       tristate "Linear (append) mode (deprecated)"
-       depends on BLK_DEV_MD
-       help
-         If you say Y here, then your multiple devices driver will be able to
-         use the so-called linear mode, i.e. it will combine the hard disk
-         partitions by simply appending one to the other.
-
-         To compile this as a module, choose M here: the module
-         will be called linear.
-
-         If unsure, say Y.
-

Is this what you need to recover data from disks salvaged from a
commercial NAS configured in JBOD mode?
If yes, and there is no better way to do that, you probably do not
want to drop this support.  Actual NAS systems running Linux might
use this as well.

Thanks for the heads-up. I honestly don't know about this use case.
Where can I find/get more information about it?

Thanks,
Song