On 5 May 2010 at 11:47, Mike Christie wrote:
On 05/03/2010 06:51 AM, Jack Z wrote:
Hi group,
I have been tracing the code related to sending PDUs from iscsi
initiator (ver 2.0-871).
And through some printk()s i realize that starting from
iscsi_sw_tcp_pdu_init(), all the functions
On 05/06/2010 03:53 PM, Jack Z wrote:
Hi Mike,
Thanks for your reply.
What I was doing was just trying to understand how the the data
travels through normal fs or block layer, reaches iscsi and gets sent
over the network, when there is a normal read()/write() request. So
the function call
Hi Mike,
Thank you for the super prompt reply. I actually downloaded that book
a while but never read. I'm gonna start reading right away. Thanks a
lot for telling me.
Two more questions about open-iscsi implementaion though..
1. As you mentioned in a previous reply, open-iscsi only supports
On 05/03/2010 06:51 AM, Jack Z wrote:
Hi group,
I have been tracing the code related to sending PDUs from iscsi
initiator (ver 2.0-871).
And through some printk()s i realize that starting from
iscsi_sw_tcp_pdu_init(), all the functions using scatterlist (struct
scatterlist *sg) seem to use
Hi Mike,
Thank you for your help again. Following the guidance in your reply, I
traced the kernel code a bit more and eventually found out a possible
path for open-iscsi to get 4K pages in the scatterlist.
Kernel version: 2.6.30
open-iscsi version: 2.0.871
Trace 1: SCSI from a write request to
Hi Mike,
Just got two more questions...
First one is about the scsi_host_template-use_clustering flag, is
there any specific reason why it is disabled in open-iscsi?
Second one is the way we use sendpage() in iscsi_tcp.c. I was
wondering can we maybe send more than one pages per sendpage()
