On Wed, Aug 08, 2018 at 01:29:55PM -0600, Greg Edwards wrote:
> The current value of VHOST_SCSI_PREALLOC_PROT_SGLS is too small to
> accommodate larger I/Os, e.g. 16-32 MiB, when the VIRTIO_SCSI_F_T10_PI
> feature bit is negotiated and the backing store supports T10 PI.
>
> vhost-scsi rejects the command with errors like:
>
> [ 59.581317] vhost_scsi_calc_sgls: requested sgl_count: 1820 exceeds pre-allocated max_sgls: 512
>
> Signed-off-by: Greg Edwards <gedwards@xxxxxxx>
> ---
> drivers/vhost/scsi.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
> index 17fcd3b2e686..8c32cf58d6fa 100644
> --- a/drivers/vhost/scsi.c
> +++ b/drivers/vhost/scsi.c
> @@ -56,7 +56,7 @@
> #define VHOST_SCSI_DEFAULT_TAGS 256
> #define VHOST_SCSI_PREALLOC_SGLS 2048
> #define VHOST_SCSI_PREALLOC_UPAGES 2048
> -#define VHOST_SCSI_PREALLOC_PROT_SGLS 512
> +#define VHOST_SCSI_PREALLOC_PROT_SGLS 2048
>
> struct vhost_scsi_inflight {
> /* Wait for the flush operation to finish */
I guess it's ok since PREALLOC_SGLS is already 2K ... or
am I missing something. Paolo, any input on this?
> --
> 2.17.1
_______________________________________________
Virtualization mailing list
Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx
https://lists.linuxfoundation.org/mailman/listinfo/virtualization
