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From: Ming Lei <ming.lei@redhat.com>
To: Jared Holzman <jholzman@nvidia.com>
Cc: "linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
	Jens Axboe <axboe@kernel.dk>
Subject: Re: [PATCH v6] ublk: Add UBLK_U_CMD_UPDATE_SIZE
Date: Mon, 21 Apr 2025 20:15:07 +0800	[thread overview]
Message-ID: <aAY2y7-XRAnOcKIi@fedora> (raw)
In-Reply-To: <2a370ab1-d85b-409d-b762-f9f3f6bdf705@nvidia.com>

On Mon, Apr 21, 2025 at 01:59:50PM +0300, Jared Holzman wrote:
> 
> From: Omri Mann <omri@nvidia.com>
> 
> Currently ublk only allows the size of the ublkb block device to be
> set via UBLK_CMD_SET_PARAMS before UBLK_CMD_START_DEV is triggered.
> 
> This does not provide support for extendable user-space block devices
> without having to stop and restart the underlying ublkb block device
> causing IO interruption.
> 
> This patch adds a new ublk command UBLK_U_CMD_UPDATE_SIZE to allow the
> ublk block device to be resized on-the-fly.
> 
> Feature flag UBLK_F_UPDATE_SIZE is also added to indicate support.
> 
> Signed-off-by: Omri Mann <omri@nvidia.com>

Looks good,

Reviewed-by: Ming Lei <ming.lei@redhat.com>


Thanks,
Ming


  reply	other threads:[~2025-04-21 12:15 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20250421105708.512852-1-jholzman@nvidia.com>
2025-04-21 10:59 ` [PATCH v6] ublk: Add UBLK_U_CMD_UPDATE_SIZE Jared Holzman
2025-04-21 12:15   ` Ming Lei [this message]
2025-04-21 15:25     ` Jared Holzman
2025-04-21 15:26   ` Jens Axboe

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