Re: [PATCH] ibmvfc: Add max_sectors module parameter

[Hannes Reinecke <hare@suse.de>]

On 7/30/24 19:51, Brian King wrote:
> There are some scenarios that can occur, such as performing an
> upgrade of the virtual I/O server, where the supported max transfer
> of the backing device for an ibmvfc HBA can change. If the max
> transfer of the backing device decreases, this can cause issues with
> previously discovered LUNs. This patch accomplishes two things.
> First, it changes the default ibmvfc max transfer value to 1MB.
> This is generally supported by all backing devices, which should
> mitigate this issue out of the box. Secondly, it adds a module
> parameter, enabling a user to increase the max transfer value to
> values that are larger than 1MB, as long as they have configured
> these larger values on the virtual I/O server as well.
> 
> Signed-off-by: Brian King <brking@linux.ibm.com>
> ---
>   drivers/scsi/ibmvscsi/ibmvfc.c | 10 +++++++---
>   drivers/scsi/ibmvscsi/ibmvfc.h |  2 +-
>   2 files changed, 8 insertions(+), 4 deletions(-)
> 
Reviewed-by: Hannes Reinecke <hare@suse.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                  Kernel Storage Architect
hare@suse.de                                +49 911 74053 688
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