From: Halil Pasic <pasic@linux.ibm.com>
To: Stefan Haberland <sth@linux.ibm.com>
Cc: Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org,
Jan Hoeppner <hoeppner@linux.ibm.com>,
linux-s390@vger.kernel.org, Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Halil Pasic <pasic@linux.ibm.com>
Subject: Re: [PATCH 5/7] s390/dasd: add aq_timeouts autoquiesce trigger
Date: Wed, 12 Apr 2023 03:34:44 +0200 [thread overview]
Message-ID: <20230412033444.6e328c96.pasic@linux.ibm.com> (raw)
In-Reply-To: <20230405142017.2446986-6-sth@linux.ibm.com>
On Wed, 5 Apr 2023 16:20:15 +0200
Stefan Haberland <sth@linux.ibm.com> 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@linux.ibm.com>
> Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
[..]
next prev parent reply other threads:[~2023-04-12 1:34 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-05 14:20 [PATCH 0/7] s390/dasd: add dasd autoquiesce feature Stefan Haberland
2023-04-05 14:20 ` [PATCH 1/7] s390/dasd: remove unused DASD EER defines Stefan Haberland
2023-04-12 1:31 ` Halil Pasic
2023-04-05 14:20 ` [PATCH 2/7] s390/dasd: add autoquiesce feature Stefan Haberland
2023-04-12 1:33 ` Halil Pasic
2023-04-05 14:20 ` [PATCH 3/7] s390/dasd: add aq_mask sysfs attribute Stefan Haberland
2023-04-12 1:33 ` Halil Pasic
2023-04-05 14:20 ` [PATCH 4/7] s390/dasd: add aq_requeue " Stefan Haberland
2023-04-12 1:34 ` Halil Pasic
2023-04-05 14:20 ` [PATCH 5/7] s390/dasd: add aq_timeouts autoquiesce trigger Stefan Haberland
2023-04-12 1:34 ` Halil Pasic [this message]
2023-04-05 14:20 ` [PATCH 6/7] s390/dasd: add autoquiesce event for start IO error Stefan Haberland
2023-04-12 1:35 ` Halil Pasic
2023-04-05 14:20 ` [PATCH 7/7] s390/dasd: fix hanging blockdevice after request requeue Stefan Haberland
2023-04-12 1:35 ` Halil Pasic
2023-04-12 1:53 ` [PATCH 0/7] s390/dasd: add dasd autoquiesce feature Jens Axboe
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