Thanks Hannes,

When we created new 4K based logical drive/container with the name length 16 
but we were seeing only first 15 characters in Linux OS by "sg_map -i", cat 
/proc/scsi/scsi.

This change fixes logical drive name display issue.
 
-----Original Message-----
From: Hannes Reinecke [mailto:h...@suse.de] 
Sent: Friday, March 27, 2015 3:45 PM
To: Mahesh Rajashekhara; jbottom...@parallels.com; linux-scsi@vger.kernel.org
Cc: Achim Leubner
Subject: Re: [V2 PATCH 03/11] aacraid: 4KB sector support

On 03/26/2015 03:41 PM, Mahesh Rajashekhara wrote:
> Add 4KB sector support
> 
> Signed-off-by: Mahesh Rajashekhara <mahesh.rajashekh...@pmcs.com>
> ---
>  drivers/scsi/aacraid/aachba.c  |  240 +++++++++++++++++++++++++++++++--------
>  drivers/scsi/aacraid/aacraid.h |   11 ++-
>  2 files changed, 200 insertions(+), 51 deletions(-)
> 
> diff --git a/drivers/scsi/aacraid/aachba.c 
> b/drivers/scsi/aacraid/aachba.c index b32e77d..aee3eaa 100644
> --- a/drivers/scsi/aacraid/aachba.c
> +++ b/drivers/scsi/aacraid/aachba.c
> @@ -111,6 +111,41 @@
>  #define BYTE2(x) (unsigned char)((x) >> 16)  #define BYTE3(x) 
> (unsigned char)((x) >> 24)
>  
> +/* MODE_SENSE data format */
> +typedef struct {
> +     struct {
> +             u8      data_length;
> +             u8      med_type;
> +             u8      dev_par;
> +             u8      bd_length;
> +     } __attribute__((packed)) hd;
> +     struct {
> +             u8      dens_code;
> +             u8      block_count[3];
> +             u8      reserved;
> +             u8      block_length[3];
> +     } __attribute__((packed)) bd;
> +             u8      mpc_buf[3];
> +} __attribute__((packed)) aac_modep_data;
> +
> +/* MODE_SENSE_10 data format */
> +typedef struct {
> +     struct {
> +             u8      data_length[2];
> +             u8      med_type;
> +             u8      dev_par;
> +             u8      rsrvd[2];
> +             u8      bd_length[2];
> +     } __attribute__((packed)) hd;
> +     struct {
> +             u8      dens_code;
> +             u8      block_count[3];
> +             u8      reserved;
> +             u8      block_length[3];
> +     } __attribute__((packed)) bd;
> +             u8      mpc_buf[3];
> +} __attribute__((packed)) aac_modep10_data;
> +
>  
> /*------------------------------------------------------------------------------
>   *              S T R U C T S / T Y P E D E F S
>   
> *---------------------------------------------------------------------
> -------*/ @@ -438,7 +473,7 @@ static void 
> get_container_name_callback(void *context, struct fib * fibptr)
>       if ((le32_to_cpu(get_name_reply->status) == CT_OK)
>        && (get_name_reply->data[0] != '\0')) {
>               char *sp = get_name_reply->data;
> -             sp[sizeof(((struct aac_get_name_resp *)NULL)->data)-1] = '\0';
> +             sp[sizeof(((struct aac_get_name_resp *)NULL)->data)] = '\0';
>               while (*sp == ' ')
>                       ++sp;
>               if (*sp) {
What has this to do with 4k block support?
Looks rather like an unrelated bugfix to me...

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                            zSeries & Storage
h...@suse.de                                   +49 911 74053 688
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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