Re: [PATCH 8/9] block: add configurable error injection

[Randy Dunlap]

On 6/1/26 10:45 PM, Christoph Hellwig wrote:
> diff --git a/Documentation/block/error-injection.rst 
> b/Documentation/block/error-injection.rst
> new file mode 100644
> index 000000000000..be87091b5330
> --- /dev/null
> +++ b/Documentation/block/error-injection.rst
> @@ -0,0 +1,59 @@
> +.. SPDX-License-Identifier: GPL-2.0
> +
> +============================
> +Configurable Error Injection
> +============================
> +
> +Overview
> +--------
> +
> +Configurable error injection allows injecting specific block layer status 
> codes
> +for ranges of a block device.  Error can be injected unconditional, or with a

                                  Errors can be injected unconditionally or 
with a

> +given probability.
> +
> +To use configurable error injection, CONFIG_FAIL_MAKE_REQUEST must be 
> enabled.
> +
> +The only interface is the error_injection debugfs file, which is created for
> +each registered gendisk.  Writes to this file are used to create or delete 
> rules
> +and reads return a list of the current error injection sites.

[snip]

-- 
~Randy