linux-kernel - Re: How to online remove an error scsi disk from the system?

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Date:	Fri, 01 Feb 2013 09:52:11 +0000
From:	"Bryn M. Reeves" <bmr@...hat.com>
To:	Bart Van Assche <bvanassche@....org>
CC:	Tao Ma <tm@....ma>, linux-scsi@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: How to online remove an error scsi disk from the system?

On 02/01/2013 07:54 AM, Bart Van Assche wrote:
>   * proc_scsi_write - handle writes to /proc/scsi/scsi
>   * @file: not used
>   * @buf: buffer to write
>   * @length: length of buf, at most PAGE_SIZE
>   * @ppos: not used
>   *
>   * Description: this provides a legacy mechanism to add or remove
>   * devices by Host, Channel, ID, and Lun.  To use,
>   * "echo 'scsi add-single-device 0 1 2 3' > /proc/scsi/scsi" or
>   * "echo 'scsi remove-single-device 0 1 2 3' > /proc/scsi/scsi" with
>   * "0 1 2 3" replaced by the Host, Channel, Id, and Lun.

The proc interface is deprecated; this can all be done via sysfs today, 
e.g.:

echo 1 > /sys/block/sdc/device/delete

Is equivalent to issuing scsi remove-single-device to proc.

Regards,
Bryn.


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