From: Damien Le Moal <dlemoal@kernel.org>
To: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org, linux-scsi@vger.kernel.org,
"Martin K . Petersen" <martin.petersen@oracle.com>
Subject: Re: [PATCH v3 1/7] block: fail reads to offline zones early
Date: Wed, 7 Oct 2026 16:31:36 +0200 [thread overview]
Message-ID: <777cbd7d-0ea6-4263-9dfa-92f3422d5330@kernel.org> (raw)
In-Reply-To: <20261007132905.GA31906@lst.de>
On 2026/10/07 15:29, Christoph Hellwig wrote:
> On Wed, Oct 07, 2026 at 05:23:38PM +0900, Damien Le Moal wrote:
>> Any BIO targeting an offline zone of a zoned block device will fail,
>> including read commands. So there is no point in issuing read BIOs.
>> Fail these read operations early if we ever see one.
>
> Sashiko things this can race with zone updates. Which is real, at least
> sorta. Maybe we should just do this in the drivers instead where we
> are under freeze protection? A bit uglier due to duplication, but not
> really any more complicated. And drivers right now would basically
> just be sd and zloop anyway.
Yep, I will drop this patch and add a zloop and sd patch.
--
Damien Le Moal
Western Digital Research
next prev parent reply other threads:[~2026-10-07 14:31 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-07 8:23 [PATCH v3 0/7] Add support for storage element depopulation Damien Le Moal
2026-10-07 8:23 ` [PATCH v3 1/7] block: fail reads to offline zones early Damien Le Moal
2026-10-07 13:29 ` Christoph Hellwig
2026-10-07 14:31 ` Damien Le Moal [this message]
2026-10-07 8:23 ` [PATCH v3 2/7] block: introduce storage element management Damien Le Moal
2026-10-07 13:35 ` Christoph Hellwig
2026-10-07 14:35 ` Damien Le Moal
2026-10-07 8:23 ` [PATCH v3 3/7] block: add storage element management ioctls Damien Le Moal
2026-10-07 13:39 ` Christoph Hellwig
2026-10-07 14:37 ` Damien Le Moal
2026-10-07 15:28 ` Christoph Hellwig
2026-10-07 8:23 ` [PATCH v3 4/7] zloop: add storage element emulation Damien Le Moal
2026-10-07 13:40 ` Christoph Hellwig
2026-10-07 8:23 ` [PATCH v3 5/7] zloop: add degrade_element control command Damien Le Moal
2026-10-07 8:23 ` [PATCH v3 6/7] scsi: sd_zbc: always revalidate zones for disks supporting head depopulation Damien Le Moal
2026-10-07 8:23 ` [PATCH v3 7/7] scsi: sd_zbc: define storage element management operations Damien Le Moal
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