Re: [PATCH 5/7] s390/dasd: add aq_timeouts autoquiesce trigger

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On Wed,  5 Apr 2023 16:20:15 +0200
Stefan Haberland <sth@xxxxxxxxxxxxx> wrote:

> Add a sysfs attribute aq_timeouts that controls after how many
> timeouts a autoquiesce event might be triggered.
> 
> The default value is 32768 which is the maximum number of retries
> for the DASD device driver DASD_RETRIES_MAX. This means that the
> timeout trigger will never happen.
> 
> The default value for DASD retries is 255.
> Setting the value to below 255 will trigger the timeout autoquiesce
> event before an IO error is generated.
> 
> Also add the check for the configured amount of timeouts and trigger
> an autoquiesce event if exceeded.
> 
> Signed-off-by: Stefan Haberland <sth@xxxxxxxxxxxxx>
> Reviewed-by: Jan Hoeppner <hoeppner@xxxxxxxxxxxxx>

Reviewed-by: Halil Pasic <pasic@xxxxxxxxxxxxx>

[..]



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