Differences

This shows you the differences between two versions of the page.

--- nndocs:srp [2025/11/08 02:44] – [Dependencies] connect to target naptastic
+++ nndocs:srp [2025/11/08 06:12] (current) – target/ACL confusion reduction naptastic
@@ Line 14: / Line 14: @@
   fe800000000000005849560e59150301
-The top 64 bits of the ACL might need to be 0 or they might be the same as the GUID; I don't know the initiator ID actually gets generated and I'm not doing any more digging into it.
+Initiator ACLs start with all 0's. Targets start with fe80.
   /srpt> ib.fe800000000000005849560e53b70b01/acls create ib.00000000000000005849560e59150301
@@ Line 20: / Line 20: @@
   Created mapped LUN 0.
-A Linux SRP target is always visible from all InfiniBand partitions. That limits its usefulness to me.
+A Linux SRP target is always visible from all InfiniBand partitions.
 ====Dependencies====
   apt install srptools
+Do **NOT** set srp_daemon loose without using the -o flag! It will flood dmesg on both the initiator and the target!
 Find targets to connect to:
@@ Line 34: / Line 36: @@
   * -c means "emit target information in a format we can use later"
   * -p 1 means "only scan on HCA port 1" so obviously change this if you are initiating from port 2...
+====Configuration====
+It is **critical** that you edit /etc/srp_daemon.conf as soon as you have a list of targets and disallow connections to anything except the targets you want. The default file is well commented.
 To connect to a target listed by srp_daemon, write it to the appropriate add_target file in /sys/class/infiniband_srp. Here's how shark gets its swap ramdisk from southpark:
@@ Line 52: / Line 58: @@
   17179869184 bytes (17 GB, 16 GiB) copied, 13.7431 s, 1.3 GB/s
+====Logout====
+"Delete the port" sounds pretty destructive, but this actually is the graceful way to close the connection.
+  # echo 1 > /sys/class/srp_remote_ports/[tab tab tab]/delete