linux-kernel - Re: [PATCH 06/20] [SCSI] mpt3sas: Provides the physical location of sas drives

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Date:	Fri, 19 Jun 2015 11:19:46 +0200
From:	Johannes Thumshirn <jthumshirn@...e.de>
To:	Sreekanth Reddy <sreekanth.reddy@...gotech.com>
Cc:	jejb@...nel.org, hch@...radead.org, martin.petersen@...cle.com,
	linux-scsi@...r.kernel.org, JBottomley@...allels.com,
	Sathya.Prakash@...gotech.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 06/20] [SCSI] mpt3sas: Provides the physical location of
 sas drives

On Fri, Jun 12, 2015 at 03:12:18PM +0530, Sreekanth Reddy wrote:
> This Patch will provide more details of the devices such as slot number, enclosure logical id, enclosure level & connector name in the following scenarios,
> 
> - When end device is added in the topology,
> - When the end device is removed from the setup,
> - When the SCSI mid layer issues TASK ABORT/ DEVICE RESET/ TARGET RESET during error handling,
> - When any command to the device fails with Sense key Hardware error or Medium error or Unit Attention,
> - When firmware returns device error or device not ready status for the end device,
> - When a Predicted fault is detected on an end device.
> 
> This information can be used by the user to identify the location of the desired drive in the topology.
> 
> Driver will get these information by reading the sas device page0.
> 
> Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@...gotech.com>
> ---
>  drivers/scsi/mpt3sas/mpt3sas_base.h  |   2 +
>  drivers/scsi/mpt3sas/mpt3sas_scsih.c | 238 +++++++++++++++++++++++++++++------
>  2 files changed, 201 insertions(+), 39 deletions(-)
> 
> diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h
> index b79ad4f..293ad23 100644
> --- a/drivers/scsi/mpt3sas/mpt3sas_base.h
> +++ b/drivers/scsi/mpt3sas/mpt3sas_base.h
> @@ -317,6 +317,8 @@ struct _sas_device {
>  	u8	fast_path;
>  	u8	pfa_led_on;
>  	u8	pend_sas_rphy_add;
> +	u8   enclosure_level;
> +	u8   connector_name[4];

Minor nit of different indent here, don't know if it is worth re-sending?

Other than that:

Reviewed-by: Johannes Thumshirn <jthumshirn@...e.de>

-- 
Johannes Thumshirn                                       Storage
jthumshirn@...e.de                             +49 911 74053 689
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)
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