benoit plessis wrote:
> Hi, following up on my performances problems with iscsi & netapp filer, my
> contacts
> send me some netapp KB docs related to iscsi and performance problems with
> linux.
> Thoses docs seem quite outdated (refering to module iscsi_sfnet and RHEL4),
> but they all seem
> to say that i should at least increase the max ios per lun on the driver
> side. This however doesn't
> seem to be supported any more by open-iscsi (along side with max_conn), any
> reason why ?

max_conn is not supported because we do not do MC/s. iscsi_sfnet did not 

For the IO limits you can set

# 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

# To control the device's queue depth set node.session.queue_depth
# to a value between 1 and 1024. The default is 32.
node.session.queue_depth = 32

You can set this in the iscsid.conf file then redicover and relogin to 
the  targets or run
iscsiadm -m node -T target -o update -n name_of_setting_above -v

then relogin.

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