On Tue, Aug 4, 2015 at 8:10 PM, Sagi Grimberg wrote:
>
Why SIZE_4K and not PAGE_SIZE?
>>>
>>>
>>> Yes, I'll change that to PAGE_SIZE.
>>>
>>> Thanks.
>>
>>
>> Would non-4KB pages (e.g. PPC 64KB) be an issue? Would this work between
>> hosts with different page sizes?
>
>
> iser was always usi
Why SIZE_4K and not PAGE_SIZE?
Yes, I'll change that to PAGE_SIZE.
Thanks.
Would non-4KB pages (e.g. PPC 64KB) be an issue? Would this work between hosts
with different page sizes?
iser was always using 4K segments for reasons I don't perfectly
understand. Maybe Or can comment on this? I
On Aug 2, 2015, at 4:01 AM, Sagi Grimberg wrote:
>>> +static void
>>> +iser_calc_scsi_params(struct iser_conn *iser_conn,
>>> + unsigned int max_sectors)
>>> +{
>>> +struct iser_device *device = iser_conn->ib_conn.device;
>>> +unsigned short sg_tablesize, sup_sg_tablesize;
>>
+static void
+iser_calc_scsi_params(struct iser_conn *iser_conn,
+ unsigned int max_sectors)
+{
+struct iser_device *device = iser_conn->ib_conn.device;
+unsigned short sg_tablesize, sup_sg_tablesize;
+
+sg_tablesize = DIV_ROUND_UP(max_sectors * 512, SIZE_4K);
+sup_s
On 7/30/2015 3:06 AM, Sagi Grimberg wrote:
iser support up to 512KB data transfer in a single scsi
command. In order to support up to 8MB, iser needs to pre-allocate
larger memory regions and larger page vectors.
Given that a few target implementations don't support data transfers
of more than 5
On 7/30/2015 1:22 PM, Or Gerlitz wrote:
On Thu, Jul 30, 2015 at 11:06 AM, Sagi Grimberg wrote:
iser support up to 512KB data transfer in a single scsi
command. In order to support up to 8MB, iser needs to pre-allocate
larger memory regions and larger page vectors.
We should be doing things f
On Thu, Jul 30, 2015 at 11:06 AM, Sagi Grimberg wrote:
> iser support up to 512KB data transfer in a single scsi
> command. In order to support up to 8MB, iser needs to pre-allocate
> larger memory regions and larger page vectors.
We should be doing things for a reason, and we are following that
iser support up to 512KB data transfer in a single scsi
command. In order to support up to 8MB, iser needs to pre-allocate
larger memory regions and larger page vectors.
Given that a few target implementations don't support data transfers
of more than 512KB by default and the fact that larger IO s
