Re: queue_depth vs. initial_cmdsn vs. cmds_max

2010-06-10 Thread Mike Christie
On 06/09/2010 09:19 AM, Patrick J. LoPresti wrote: Hi, Mike, and thank you for your reply. On Tue, Jun 8, 2010 at 10:00 PM, Mike Christie wrote: # To control how many commands the session will queue set # node.session.cmds_max to an integer between 2 and 2048 that is also # a power of 2. The

Re: queue_depth vs. initial_cmdsn vs. cmds_max

2010-06-09 Thread Patrick J. LoPresti
On Wed, Jun 9, 2010 at 7:19 AM, I wrote: > > First, why would I want cmds_max larger than queue_depth?  Is it > something to do with the protocol (e.g., a single command to the > device can become multiple commands in the session)?  Or is it just > because one session can have multiple targets, whi

Re: queue_depth vs. initial_cmdsn vs. cmds_max

2010-06-09 Thread Patrick J. LoPresti
Hi, Mike, and thank you for your reply. On Tue, Jun 8, 2010 at 10:00 PM, Mike Christie wrote: > > # To control how many commands the session will queue set > # node.session.cmds_max to an integer between 2 and 2048 that is also > # a power of 2. The default is 128. > node.session.cmds_max = 128 >

Re: queue_depth vs. initial_cmdsn vs. cmds_max

2010-06-08 Thread Mike Christie
On 06/08/2010 07:55 PM, Patrick J. LoPresti wrote: I apologize if this is a dumb question, but I am new to iSCSI. (Well, at this level of detail, I am new to SCSI in general.) I have been browsing the source code (open-iscsi-2.0-871), and I am curious about the following iscsid.conf parameters:

queue_depth vs. initial_cmdsn vs. cmds_max

2010-06-08 Thread Patrick J. LoPresti
I apologize if this is a dumb question, but I am new to iSCSI. (Well, at this level of detail, I am new to SCSI in general.) I have been browsing the source code (open-iscsi-2.0-871), and I am curious about the following iscsid.conf parameters: node.session.initial_cmdsn node.session.cmds_ma