From: Damien Le Moal <damien.lemoal@opensource.wdc.com>
To: Keith Busch <kbusch@kernel.org>, Bart Van Assche <bvanassche@acm.org>
Cc: Niklas Cassel <niklas.cassel@wdc.com>,
Jens Axboe <axboe@kernel.dk>, Christoph Hellwig <hch@lst.de>,
Hannes Reinecke <hare@suse.de>,
linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org,
linux-block@vger.kernel.org
Subject: Re: [PATCH v3 02/18] block: introduce BLK_STS_DURATION_LIMIT
Date: Wed, 25 Jan 2023 06:36:14 +0900 [thread overview]
Message-ID: <b585cc43-8584-a980-6b52-224d8692b66a@opensource.wdc.com> (raw)
In-Reply-To: <Y9A4s5tlsdx0S8s4@kbusch-mbp.dhcp.thefacebook.com>
On 1/25/23 04:59, Keith Busch wrote:
> On Tue, Jan 24, 2023 at 11:29:10AM -0800, Bart Van Assche wrote:
>> On 1/24/23 11:02, Niklas Cassel wrote:
>>> Introduce the new block IO status BLK_STS_DURATION_LIMIT for LLDDs to
>>> report command that failed due to a command duration limit being
>>> exceeded. This new status is mapped to the ETIME error code to allow
>>> users to differentiate "soft" duration limit failures from other more
>>> serious hardware related errors.
>>
>> What makes exceeding the duration limit different from an I/O timeout
>> (BLK_STS_TIMEOUT)? Why is it important to tell the difference between an I/O
>> timeout and exceeding the command duration limit?
>
> BLK_STS_TIMEOUT should be used if the target device doesn't provide any
> response to the command. The DURATION_LIMIT status is used when the device
> completes a command with that status.
Yes, exactly :)
--
Damien Le Moal
Western Digital Research
next prev parent reply other threads:[~2023-01-24 21:36 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-24 19:02 [PATCH v3 00/18] Add Command Duration Limits support Niklas Cassel
2023-01-24 19:02 ` [PATCH v3 01/18] block: introduce duration-limits priority class Niklas Cassel
2023-01-24 19:27 ` Bart Van Assche
2023-01-24 20:36 ` Bart Van Assche
2023-01-24 21:48 ` Damien Le Moal
2023-01-24 21:29 ` Damien Le Moal
2023-01-24 22:43 ` Bart Van Assche
2023-01-24 22:59 ` Damien Le Moal
2023-01-25 0:05 ` Bart Van Assche
2023-01-25 1:19 ` Damien Le Moal
2023-01-25 18:37 ` Bart Van Assche
2023-01-25 21:23 ` Niklas Cassel
2023-01-26 0:24 ` Damien Le Moal
2023-01-26 13:53 ` Niklas Cassel
2023-01-26 17:33 ` Bart Van Assche
2023-01-27 0:18 ` Damien Le Moal
2023-01-27 1:40 ` Damien Le Moal
2023-01-27 17:23 ` Bart Van Assche
2023-01-28 0:40 ` Damien Le Moal
2023-01-28 0:47 ` Bart Van Assche
2023-01-28 0:59 ` Damien Le Moal
2023-01-28 20:25 ` Martin K. Petersen
2023-01-29 3:52 ` Damien Le Moal
2023-01-30 13:44 ` Hannes Reinecke
2023-01-30 14:55 ` Damien Le Moal
2023-01-30 19:24 ` Bart Van Assche
2023-01-30 20:40 ` Bart Van Assche
2023-01-31 2:49 ` Martin K. Petersen
2023-01-31 3:10 ` Damien Le Moal
2023-01-30 19:13 ` Bart Van Assche
2023-01-31 2:58 ` Martin K. Petersen
2023-01-31 3:03 ` Damien Le Moal
2023-01-25 23:11 ` Keith Busch
2023-01-26 0:08 ` Damien Le Moal
2023-01-26 5:26 ` Christoph Hellwig
2023-01-25 6:33 ` Christoph Hellwig
2023-01-27 12:43 ` Hannes Reinecke
2023-01-24 19:02 ` [PATCH v3 02/18] block: introduce BLK_STS_DURATION_LIMIT Niklas Cassel
2023-01-24 19:29 ` Bart Van Assche
2023-01-24 19:59 ` Keith Busch
2023-01-24 20:32 ` Bart Van Assche
2023-01-24 21:39 ` Damien Le Moal
2023-01-24 21:36 ` Damien Le Moal [this message]
2023-01-24 21:34 ` Damien Le Moal
2023-01-24 19:02 ` [PATCH v3 03/18] scsi: core: allow libata to complete successful commands via EH Niklas Cassel
2023-01-24 19:02 ` [PATCH v3 04/18] scsi: rename and move get_scsi_ml_byte() Niklas Cassel
2023-01-24 19:32 ` Bart Van Assche
2023-01-24 19:02 ` [PATCH v3 05/18] scsi: support retrieving sub-pages of mode pages Niklas Cassel
2023-01-24 19:34 ` Bart Van Assche
2023-01-24 19:02 ` [PATCH v3 06/18] scsi: support service action in scsi_report_opcode() Niklas Cassel
2023-01-24 19:36 ` Bart Van Assche
2023-01-24 19:02 ` [PATCH v3 07/18] scsi: sd: detect support for command duration limits Niklas Cassel
2023-01-24 19:39 ` Bart Van Assche
2023-01-27 13:00 ` Hannes Reinecke
2023-01-28 0:51 ` Damien Le Moal
2023-01-28 2:52 ` Bart Van Assche
2023-01-29 2:05 ` Damien Le Moal
2023-01-24 19:02 ` [PATCH v3 08/18] scsi: sd: set read/write commands CDL index Niklas Cassel
2023-01-27 15:30 ` Hannes Reinecke
2023-01-28 0:03 ` Damien Le Moal
2023-01-30 18:13 ` Hannes Reinecke
2023-01-24 19:02 ` [PATCH v3 09/18] scsi: sd: handle read/write CDL timeout failures Niklas Cassel
2023-01-27 15:34 ` Hannes Reinecke
2023-01-28 0:06 ` Damien Le Moal
2023-02-03 16:49 ` Niklas Cassel
2023-01-24 19:02 ` [PATCH v3 10/18] ata: libata-scsi: remove unnecessary !cmd checks Niklas Cassel
2023-01-27 15:35 ` Hannes Reinecke
2023-01-24 19:02 ` [PATCH v3 11/18] ata: libata: change ata_eh_request_sense() to not set CHECK_CONDITION Niklas Cassel
2023-01-27 15:36 ` Hannes Reinecke
2023-01-24 19:02 ` [PATCH v3 12/18] ata: libata: detect support for command duration limits Niklas Cassel
2023-01-24 19:02 ` [PATCH v3 13/18] ata: libata-scsi: handle CDL bits in ata_scsiop_maint_in() Niklas Cassel
2023-01-27 15:37 ` Hannes Reinecke
2023-01-24 19:03 ` [PATCH v3 14/18] ata: libata-scsi: add support for CDL pages mode sense Niklas Cassel
2023-01-27 15:38 ` Hannes Reinecke
2023-01-24 19:03 ` [PATCH v3 15/18] ata: libata: add ATA feature control sub-page translation Niklas Cassel
2023-01-27 15:40 ` Hannes Reinecke
2023-01-24 19:03 ` [PATCH v3 16/18] ata: libata: set read/write commands CDL index Niklas Cassel
2023-01-27 15:41 ` Hannes Reinecke
2023-01-24 19:03 ` [PATCH v3 17/18] ata: libata: handle completion of CDL commands using policy 0xD Niklas Cassel
2023-01-27 15:43 ` Hannes Reinecke
2023-01-24 19:03 ` [PATCH v3 18/18] Documentation: sysfs-block-device: document command duration limits Niklas Cassel
2023-01-27 15:43 ` Hannes Reinecke
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