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--- nndocs:sandbox [2024/12/27 16:22] – [IQN and NQN] remove warning about iscsiadm naptastic
+++ nndocs:sandbox [2025/11/06 00:13] (current) – update hard drive locations naptastic
@@ Line 28: / Line 28: @@
 Since rocky's host number is 68, any other host wishing to share storage with rocky should do so on their own target bus number 68. The network is responsible to connect rocky's bus 01 with southpark's bus 68.
-Storage subnets don't have a defined numbering scheme yet. I want to make them IPv6-only.
 ====Interfaces====
 All hosts currently have 1 or 2 Ethernet ports on the mainboard, 0 or 1 wireless devices, 0 or 1 quad-port Ethernet cards, 0 or 1 Infiniband/VPI cards. They all get used differently, so... I'm going to name them differently.
@@ Line 62: / Line 61: @@
       hardware ethernet 00:10:18:f8:2e:14;
       hardware ethernet 00:10:18:f8:2e:16;
+====IPv6====
+IPv6 local unique addresses have four parts:
+  - 8 bits of fixed prefix (fd)
+  - 40 bits of pseudorandom prefix
+  - 16 bits of subnet
+  - 64 bits of GUID
+My top 48 bits are going to be fd20:4e41:5020. Subnet bits should match their Infiniband subnet. Host bits come from the hardware address.
 ====IP Addresses====
@@ Line 74: / Line 82: @@
 ====Networks====
-  * 0-3/22: "green": all emo* and eth* devices should get bridged to this network.
+I'm not currently using InfiniBand subnets for anything. They weren't helpful in partitioning SRP or iSCSI traffic.
+VLAN and VNI can match the third octet. 0 is not valid, so use the largest number in the subnet.
+^ Network ^ IPv4 Range ^ IPv6 Range ^ IB Subnet ^ VLAN ^ VXLAN IP ^ VXLAN ID ^
+| green | 172.20.0/22 | fd20:4e41:5020:ffff::/64. | ffff | 3 | 225.172.20.64 | 3 |
+| mgmt | 172.20.4/24 | - | ffff | 4 | 225.172.20.64 | 4 |
+  * 0-3/22: "green": Most eth* and en* devices should get bridged to this network.
     * 0: .1 is the network controller (router, DHCP, DNS); .2+ is for assigned hosts
     * 1: .0-255 contains IPMI interfaces and nothing else right now
@@ Line 84: / Line 100: @@
       * .96-103: shark
       * .104-111: southpark (cudapark, )
-  * Unused: 4-7 (/22) (if security cameras ever get a network, it should come from this range.)
+  * 4: "mgmt": IPMI and other "out-of-band" management
+  * Unused: 5 (/24)
+  * Unused: 6-7 (/23) (if security cameras ever get a network, it should come from this range.)
   * Future Multipath: 8-15 (/21 in /24's)
   * Unused: 16-31 (/20)
   * Unused: 32-63 (/19)
-  * RDMA networks (/19): IP over InfiniBand and Ethernet can't be bridged, so they need to be separate subnets. I //could// bridge ib0+ib1 or mlx0+mlx1 but that takes away flexibility so I'm not going to.
+  * RDMA networks (/19): IP over InfiniBand and Ethernet can't be bridged, so they need to be separate subnets. I'm not sure if ib0/ib1 is a useful division.
     * 64: ib0
     * 65: ib1
-    * 66: mlx0
+    * 66-67 (/23): Reserved
-    * 67: mlx1
     * 68-79 (/22): Reserved
     * 80-95 (/21): Reserved
@@ Line 115: / Line 132: @@
 there might be other san* VLANs defined. I don't remember.
-I am no longer able to manage the TP-link switch. It's fixed configuration. I'm not using VLANs so I don't know how it will behave with them.
+I am no longer able to manage the TP-link switch. It's fixed configuration. I don't know how it would handle traffic with VLAN tags.
 ====Host Numbers====
@@ Line 140: / Line 157: @@
 ----
+=====Where Data Lives=====
+===Storage===
+  * Production volumes:
+    * Samsung 850 512GB NVMe
+      * installed in southpark on the motherboard, I think?
+    * Western Digital Black 2TB NVMe
+      * installed in shark on the motherboard
+    * Two Sabrent 1TB NVMe drive
+      * installed in southpark on the x16 riser card
+      * Partitioned unfortunately; I'd like to move everything off them.
+    * janet: 4TB Samsung QVO.
+    * Crucial 120GB SATA SSD boot volume
+      * southpark's boot volume
+    * 512GB Crucial SATA SSD
+      * duckling boot, swap, and local snapshots
+    * black: Three 4TB drives in a RAID-5 holding backups; currently in shark.
+  * Not installed:
+    * 2TB Vulcan Z SATA SSD (probably for shark as a backup)
+===So Where Does Shit Live?===
+  * VM Images:
+  * TV shows, movies, software, stuff like that: janet
+  * Home directories:
+  * OS volumes: In their respective hosts
+I am still struggling with the fact that things really have to boot off local storage. Fibre Channel without a switch isn't worth it and a switch isn't worth it.
+----
 =====Big Idea Dumping Ground=====
+===SSH tunnel===
+  ssh -D 1337 -q -C -N david@do.naptastic.com
+====SoC on a PCI card====
+Mostly this is to enable other projects. It needs at least these features:
+  * reasonable amount of CPU and DRAM
+  * PCIe 3.0 x1 or better
+  * Internal ports:
+    - m.2 slot
+    - Explicitly copy rpi's 40-pin header
+    - LP-DIMM
+  * External ports:
+    - HDMI
+    - gigabit Ethernet
+    - (2) USB 3.1
+The card presents itself to its host as one or more devices. It can pass through its USB host adapter, network adapter, and m.2 slot, and act as a GPU. It supports SR-IOV. You can boot off it. With the right hardware support, it should be able to stay awake while the host powers off or reboots.
 ====PCIe networking====
 These products:
@@ Line 159: / Line 222: @@
 Everything except retimer cards needs an API and UI for managing things.
 ====Better Audio Stack====
 Want to:
@@ Line 170: / Line 234: @@
 ====Better DAW====
 Core concept is a piece of virtual tape that's infinitely long, infinitely wide, and has an infinite number of tape heads that can all be accessed remotely. A recording session is a server you log into, send recorded audio, receive mixed audio, and update a database of what should play when and with what settings.
+====RDMA to a Commodore 64====
+The 6502 can't drive the C64's memory anywhere near full-speed, but the ROM port has a DMA pin, so a DMA-capable cartridge can do impossibly cool things. I'd like to find a good demo playback engine that already exists, and adapt it to play back data being streamed in over a network.
 ====Better Mixer====
 FIXME