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vhost/scsi: increase VHOST_SCSI_PREALLOC_PROT_SGLS to 2048 

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@ddn.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Greg Edwards 2018-08-08 13:29:55 -06:00 committed by Michael S. Tsirkin
parent 84f3396b71
commit 864d39df09
1 changed files with 1 additions and 1 deletions
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2
drivers/vhost/scsi.c
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@ -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 */