# Re: \[PATCH v7 26/28\] ext4: Send notifications on error

- From: Theodore Ts'o \<tytso@mit.edu\>
- Date: 2021-10-14 21:59:26 
- List: linux-api
- Page: https://ratatoskr.run/linux-api/2021/10/216026
- Thread: https://ratatoskr.run/linux-fsdevel/2021/10/215996/t.md

```text
On Thu, Oct 14, 2021 at 06:36:44PM -0300, Gabriel Krisman Bertazi wrote:
> Send a FS_ERROR message via fsnotify to a userspace monitoring tool
> whenever a ext4 error condition is triggered.  This follows the existing
> error conditions in ext4, so it is hooked to the ext4_error* functions.
> 
> It also follows the current dmesg reporting in the format.  The
> filesystem message is composed mostly by the string that would be
> otherwise printed in dmesg.
> 
> A new ext4 specific record format is exposed in the uapi, such that a
> monitoring tool knows what to expect when listening errors of an ext4
> filesystem.
> 
> Signed-off-by: Gabriel Krisman Bertazi <redacted>
> Reviewed-by: Amir Goldstein <amir73il@gmail.com>

Reviewed-by: Theodore Ts'o <tytso@mit.edu>

```