Iscsi Cake 1.8 12
# From initiator to target IP ping -c 100 <iSCSI-Target-IP> Simultaneously run:
In the world of enterprise IT and advanced home labs, two acronyms often rule the conversation: iSCSI (Internet Small Computer System Interface) for storage networking and CAKE (Common Applications Kept Enhanced) for traffic shaping. At first glance, they seem unrelated—one moves disk blocks, the other manages bufferbloat. Yet, when you search for the specific string "iscsi cake 1.8 12" , you are likely standing at the intersection of a very specific problem: How do you force high-performance iSCSI storage traffic through a slow, asymmetric internet connection (1.8 Mbps down / 12 Mbps up) without destroying latency? iscsi cake 1.8 12
Remember: CAKE is not magic, but for that weird ADSL backup link or rural LTE connection, it is the only thing standing between your remote ZFS pool and a fatal timeout. # From initiator to target IP ping -c
This article unpacks that exact scenario. We will explore what iSCSI does, why CAKE is the best scheduler to tame it, and how to manually configure a 1.8/12 profile to keep your remote storage usable. What is iSCSI? iSCSI is a protocol that transports SCSI commands over TCP/IP. It allows a client (initiator) to mount a remote disk as if it were a local SATA drive. Unlike NFS or SMB (file-level protocols), iSCSI operates at the block level. Remember: CAKE is not magic, but for that
node.conn[0].timeo.noop_out_interval = 5 node.conn[0].timeo.noop_out_timeout = 10 node.session.timeo.replacement_timeout = 15 node.session.iscsi.FirstBurstLength = 8192 node.session.iscsi.MaxBurstLength = 131072 node.conn[0].iscsi.MaxRecvDataSegmentLength = 4096 With CAKE enforcing 12Mbit upload, larger bursts (default 262144 bytes) will be queued, violating iSCSI’s expected latency. Step 5: Testing the Stack Use ping to monitor latency under load:
The exact command— tc qdisc add dev eth1 root cake bandwidth 12Mbit 1.8Mbit autorate-ingress diffserv4 ack-filter nat docsis —is your silver bullet. It respects the 12Mbps ceiling, protects the fragile 1.8Mbps floor, and keeps your iSCSI reads and writes flowing without inducing bufferbloat.