On Thu, 2016-03-10 at 23:30 -0800, Christoph Hellwig wrote: > On Thu, Mar 10, 2016 at 04:24:25PM -0600, Chris Friesen wrote: > > Hi, > > > > I'm looking for information on whether the iSCSI target in the kernel offers > > any way to do QoS between traffic driven by different initiators. > > > > I'm trying to make sure that one initiator can't do a denial-of-service > > attack against others. > > > > Does the kernel target have this sort of thing built-in, or do I need to > > look at network traffic-shaping to achieve this? > > It doesn't right now, but it shouldn't be hard to integrate it with > blk cgroups.
For iscsi-target application QoS, the per session command sequence number window depth (CmdSN) exists to enforce per InitiatorName limits via TPG default_cmdsn_depth + se_node_acl->queue_depth configfs attributes. Note these values can be changed on the fly for iscsi-target using explicit se_node_acl->acl_group, but currently require a se_session reinstatement event for updated ExpCmdSN + MaxCmdSN to take effect. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
