His Masters' Voices Wiki

この文書は読取専用です。文書のソースを閲覧することは可能ですが、変更はできません。もし変更したい場合は管理者に連絡してください。
ReadyNAS Duo v2 の Open-WRT化(再トライ編)
=============================

概要
-----

Open-WRT は 主にブロードバンドルーター向けの Linuxディストリビューション。
コミュニティの情報によればNETGEAR の NAS box ReadyNAS Duo v2 にもインストールできる。
ReadyNAS Duo v2は、製造から10年近く経過しており、すでに公式サポートも終了。
中のOSも相当古くなっているので、Open-WRTに入れ替えることで延命を図る。


イメージの入手
----------

https://firmware-selector.openwrt.org/?version=SNAPSHOT&target=kirkwood%2Fgeneric&id=netgear_readynas-duo-v2

上のリンクからKERNELとSYSUPGRADEをダウンロードする。

KERNEL：openwrt-kirkwood-netgear%%_%%readynas-duo-v2-initramfs-uImage
SYSUPGRADE：openwrt-kirkwood-netgear%%_%%readynas-duo-v2-squashfs-sysupgrade.bin

{{:nas:pasted:20220521-181959.png}}

#### 私のあやふやな理解

KERNEL　最初にReadyNASのNANDフラッシュに書き込む必要最小限の内容だけのイメージ
SYSUPGRADE　KERNELで起動した上で、sysupgrade（上書き更新？）して使うフル版のイメージ


準備
----

- ReadyNASとPCをシリアル接続できるようにしておく
- FAT32でフォーマットしたUSBメモリに KERNELイメージを保存しておく


手順
----

[ここ](https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=4e46ae1f69b5ff1cf09b2e2eee69a7c38a00202d)にざっくり書かれている

<WRAP center round box 90%>
Installation by USB + serial:
- Copy initramfs image to fat32 usb drive
- Connect pendrive to USB 2.0 front socket
- Connect serial console
- Stop booting in u-boot
- Do:
  usb reset
  setenv bootargs 'console=ttyS0,115200n8 earlyprintk'
  setenv bootcmd 'nand read.e 0x1200000 0x200000 0x600000;bootm 0x1200000'
  saveenv
  fatload usb 0:1 0x1200000 openwrt-kirkwood-netgear_readynas-duo-v2-initramfs-uImage
  bootm 0x1200000
- copy sysupgrade image via ssh.
- run sysupgrade
</WRAP>

実際
----------

### OpenWRTのインストール

※LANケーブルは接続しない

- USBメモリに「openwrt-kirkwood-netgear_readynas-duo-v2-initramfs-uImage」をコピー
- このUSBメモリをReadyNASの前面USBポートに接続
- USB-シリアル変換ケーブルで、ReadyNASとPCで繋ぎ、TeraTermやRLoginなどの端末エミュレーターで接続待機しておく
- ReadyNASの電源を入れ、キーボートで何かキーを叩く
- 端末エミュレーターに Marvell>> プロンプトが表示されるので、手順のDoの内容を打ち込む

```
         __  __                      _ _
        |  \/  | __ _ _ ____   _____| | |
        | |\/| |/ _` | '__\ \ / / _ \ | |
        | |  | | (_| | |   \ V /  __/ | |
        |_|  |_|\__,_|_|    \_/ \___|_|_|
 _   _     ____              _
| | | |   | __ )  ___   ___ | |_ 
| | | |___|  _ \ / _ \ / _ \| __| 
| |_| |___| |_) | (_) | (_) | |_ 
 \___/    |____/ \___/ \___/ \__| 
 ** MARVELL BOARD: DB-88F6282A-BP LE 

U-Boot 1.1.4 (Jun 29 2012 - 16:06:40) Marvell version: 3.4.27
Netgear version: Uboot-1_1_4-NetgearDUOV3-V1009

U-Boot code: 00600000 -> 0067FFF0  BSS: -> 006D0120

Soc: MV88F1155 Rev 1 (DDR3)
CPU running @ 1600Mhz L2 running @ 533Mhz
SysClock = 533Mhz , TClock = 200Mhz 

DRAM unknown CAL  tRP = 8 tRAS = 20 tRCD=8
DRAM CS[0] base 0x00000000   size 256MB 
DRAM Total size 256MB  16bit width
Addresses 8M - 0M are saved for the U-Boot usage.
Mem malloc Initialization (8M - 7M): Done
NAND:128 MB
Flash:  0 kB

CPU : Marvell Feroceon (Rev 1)

Streaming disabled 
Write allocate disabled


USB 0: host mode
PEX 0: PCI Express Root Complex Interface
PEX interface detected Link X1
Switch On !

Net:   egiga0 [PRIME]
Hit any key to stop autoboot:  3  0
Marvell>> usb reset

(Re)start USB...
USB:   scanning bus for devices... 2 USB Device(s) found
Waiting for storage device(s) to settle before scanning...
1 Storage Device(s) found
Marvell>> setenv bootargs 'console=ttyS0,115200n8 earlyprintk'

Marvell>> setenv bootcmd 'nand read.e 0x1200000 0x200000 0x600000;bootm 0x1200000'

Marvell>> saveenv

Saving Environment to NAND...
Erasing Nand...Writing to Nand... done
Marvell>> fatload usb 0:1 0x1200000 openwrt-kirkwood-netgear_readynas-duo-v2-initramfs-uImage

reading openwrt-kirkwood-netgear_readynas-duo-v2-initramfs-uImage
..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

4860334 bytes read
Marvell>> bootm 0x1200000

## Booting image at 01200000 ...
   Image Name:   ARM OpenWrt Linux-5.10.115
   Created:      2022-05-20  19:00:24 UTC
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    4860270 Bytes =  4.6 MB
   Load Address: 00008000
   Entry Point:  00008000
   Verifying Checksum ... OK
OK

Starting kernel ...

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 5.10.115 (builder@buildhost) (arm-openwrt-linux-muslgnueabi-gcc (OpenWrt GCC 11.2.0 r19689-19ef3b54f4) 11.2.0, GNU ld (GNU Binutils) 2.37) #0 Fri May 20 19:00:24 2022
[    0.000000] CPU: Feroceon 88FR131 [56251311] revision 1 (ARMv5TE), cr=0005397f
[    0.000000] CPU: VIVT data cache, VIVT instruction cache
[    0.000000] OF: fdt: Machine model: NETGEAR ReadyNAS Duo v2
[    0.000000] Memory policy: Data cache writeback
[    0.000000] Zone ranges:
[    0.000000]   Normal   [mem 0x0000000000000000-0x000000000fffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x000000000fffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x000000000fffffff]
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 64960
[    0.000000] Kernel command line: console=ttyS0,115200n8 earlyprintk
[    0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes, linear)
[    0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes, linear)
[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.000000] Memory: 243348K/262144K available (5978K kernel code, 597K rwdata, 1548K rodata, 7168K init, 214K bss, 18796K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[    0.000000] random: get_random_bytes called from start_kernel+0x330/0x560 with crng_init=0
[    0.000000] clocksource: orion_clocksource: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 9556302233 ns
[    0.000006] sched_clock: 32 bits at 200MHz, resolution 5ns, wraps every 10737418237ns
[    0.000031] Switching to timer-based delay loop, resolution 5ns
[    0.000098] Calibrating delay loop (skipped), value calculated using timer frequency.. 400.00 BogoMIPS (lpj=2000000)
[    0.000119] pid_max: default: 32768 minimum: 301
[    0.000258] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.000277] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.000991] CPU: Testing write buffer coherency: ok
[    0.001693] Setting up static identity map for 0x100000 - 0x10003c
[    0.001882] mvebu-soc-id: MVEBU SoC ID=0x6282, Rev=0x1
[    0.002020] dyndbg: Ignore empty _ddebug table in a CONFIG_DYNAMIC_DEBUG_CORE build
[    0.004573] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.004597] futex hash table entries: 256 (order: -1, 3072 bytes, linear)
[    0.004695] pinctrl core: initialized pinctrl subsystem
[    0.005530] NET: Registered protocol family 16
[    0.005835] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.006628] thermal_sys: Registered thermal governor 'step_wise'
[    0.006699] cpuidle: using governor ladder
[    0.006943] Feroceon L2: Enabling L2
[    0.006978] Feroceon L2: Cache support initialised.
[    0.015181] No ATAGs?
[    0.050726] SCSI subsystem initialized
[    0.051848] usbcore: registered new interface driver usbfs
[    0.051891] usbcore: registered new interface driver hub
[    0.051929] usbcore: registered new device driver usb
[    0.056246] clocksource: Switched to clocksource orion_clocksource
[    0.056872] NET: Registered protocol family 2
[    0.056975] IP idents hash table entries: 4096 (order: 3, 32768 bytes, linear)
[    0.057477] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 4096 bytes, linear)
[    0.057512] TCP established hash table entries: 2048 (order: 1, 8192 bytes, linear)
[    0.057544] TCP bind hash table entries: 2048 (order: 1, 8192 bytes, linear)
[    0.057573] TCP: Hash tables configured (established 2048 bind 2048)
[    0.057638] UDP hash table entries: 256 (order: 0, 4096 bytes, linear)
[    0.057661] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes, linear)
[    0.057765] NET: Registered protocol family 1
[    0.057789] PCI: CLS 0 bytes, default 32
[    0.117299] workingset: timestamp_bits=14 max_order=16 bucket_order=2
[    0.120282] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.120296] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    0.120858] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[    0.122797] kirkwood-pinctrl f1010000.pin-controller: registered pinctrl driver
[    0.123767] mvebu-pcie mbus@f1000000:pcie@82000000: host bridge /mbus@f1000000/pcie@82000000 ranges:
[    0.123802] mvebu-pcie mbus@f1000000:pcie@82000000:      MEM 0x00f1040000..0x00f1041fff -> 0x0000040000
[    0.123823] mvebu-pcie mbus@f1000000:pcie@82000000:      MEM 0x00f1044000..0x00f1045fff -> 0x0000044000
[    0.123841] mvebu-pcie mbus@f1000000:pcie@82000000:      MEM 0x00f1080000..0x00f1081fff -> 0x0000080000
[    0.123860] mvebu-pcie mbus@f1000000:pcie@82000000:      MEM 0xffffffffffffffff..0x00fffffffe -> 0x0100000000
[    0.123877] mvebu-pcie mbus@f1000000:pcie@82000000:       IO 0xffffffffffffffff..0x00fffffffe -> 0x0100000000
[    0.123894] mvebu-pcie mbus@f1000000:pcie@82000000:      MEM 0xffffffffffffffff..0x00fffffffe -> 0x0200000000
[    0.123907] mvebu-pcie mbus@f1000000:pcie@82000000:       IO 0xffffffffffffffff..0x00fffffffe -> 0x0200000000
[    0.124062] mvebu-pcie mbus@f1000000:pcie@82000000: PCI host bridge to bus 0000:00
[    0.124077] pci_bus 0000:00: root bus resource [bus 00-ff]
[    0.124089] pci_bus 0000:00: root bus resource [mem 0xf1040000-0xf1041fff] (bus address [0x00040000-0x00041fff])
[    0.124100] pci_bus 0000:00: root bus resource [mem 0xf1044000-0xf1045fff] (bus address [0x00044000-0x00045fff])
[    0.124110] pci_bus 0000:00: root bus resource [mem 0xf1080000-0xf1081fff] (bus address [0x00080000-0x00081fff])
[    0.124119] pci_bus 0000:00: root bus resource [mem 0xe0000000-0xefffffff]
[    0.124128] pci_bus 0000:00: root bus resource [io  0x1000-0xeffff]
[    0.124207] pci 0000:00:01.0: [11ab:6282] type 01 class 0x060400
[    0.125158] PCI: bus0: Fast back to back transfers disabled
[    0.125172] pci 0000:00:01.0: bridge configuration invalid ([bus 00-00]), reconfiguring
[    0.125291] pci 0000:01:00.0: [1033:0194] type 00 class 0x0c0330
[    0.125328] pci 0000:01:00.0: reg 0x10: [mem 0x40000000-0x40001fff 64bit]
[    0.125463] pci 0000:01:00.0: PME# supported from D0 D3hot D3cold
[    0.125502] pci 0000:01:00.0: 2.000 Gb/s available PCIe bandwidth, limited by 2.5 GT/s PCIe x1 link at 0000:00:01.0 (capable of 4.000 Gb/s with 5.0 GT/s PCIe x1 link)
[    0.126372] PCI: bus1: Fast back to back transfers disabled
[    0.126387] pci_bus 0000:01: busn_res: [bus 01-ff] end is updated to 01
[    0.126532] pci 0000:00:01.0: BAR 8: assigned [mem 0xe0000000-0xe00fffff]
[    0.126547] pci 0000:01:00.0: BAR 0: assigned [mem 0xe0000000-0xe0001fff 64bit]
[    0.126566] pci 0000:00:01.0: PCI bridge to [bus 01]
[    0.126577] pci 0000:00:01.0:   bridge window [mem 0xe0000000-0xe00fffff]
[    0.126619] pci 0000:00:01.0: enabling device (0140 -> 0142)
[    0.131888] Serial: 8250/16550 driver, 16 ports, IRQ sharing enabled
[    0.133168] printk: console [ttyS0] disabled
[    0.133245] f1012000.serial: ttyS0 at MMIO 0xf1012000 (irq = 26, base_baud = 12500000) is a 16550A
[    0.790459] printk: console [ttyS0] enabled
[    0.795166] Loading iSCSI transport class v2.0-870.
[    0.803697] nand: device found, Manufacturer ID: 0xad, Chip ID: 0xf1
[    0.810105] nand: Hynix H27U1G8F2BTR-BC
[    0.813954] nand: 128 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
[    0.821586] Scanning device for bad blocks
[    0.902422] 4 fixed-partitions partitions found on MTD device orion_nand
[    0.909159] Creating 4 MTD partitions on "orion_nand":
[    0.914322] 0x000000000000-0x000000180000 : "u-boot"
[    0.921109] 0x000000180000-0x0000001a0000 : "u-boot-env"
[    0.926860] 0x000000200000-0x000000800000 : "kernel"
[    0.933204] 0x000000800000-0x000008000000 : "ubi"
[    0.954622] mv643xx_eth: MV-643xx 10/100/1000 ethernet driver version 1.4
[    0.964461] mv643xx_eth_port mv643xx_eth_port.0 eth0: port 0 with MAC address 2c:b0:5d:bf:0d:35
[    2.006252] rtc-mv f1010300.rtc: internal RTC not ticking
[    2.011753] i2c /dev entries driver
[    2.016550] orion_wdt: Initial timeout 21 sec
[    2.028485] marvell-cesa f1030000.crypto: CESA device successfully registered
[    2.036382] NET: Registered protocol family 10
[    2.042410] Segment Routing with IPv6
[    2.046145] NET: Registered protocol family 17
[    2.050675] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[    2.063809] 8021q: 802.1Q VLAN Support v1.8
[    2.071477] UBI: auto-attach mtd3
[    2.074819] ubi0: attaching mtd3
[    2.219953] ubi0: scanning is finished
[    2.234281] ubi0: attached mtd3 (name "ubi", size 120 MiB)
[    2.239819] ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 129024 bytes
[    2.246734] ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 512
[    2.253459] ubi0: VID header offset: 512 (aligned 512), data offset: 2048
[    2.260279] ubi0: good PEBs: 960, bad PEBs: 0, corrupted PEBs: 0
[    2.266323] ubi0: user volume: 2, internal volumes: 1, max. volumes count: 128
[    2.273577] ubi0: max/mean erase counter: 1/0, WL threshold: 4096, image sequence number: 534925369
[    2.282670] ubi0: available PEBs: 0, total reserved PEBs: 960, PEBs reserved for bad PEB handling: 20
[    2.292184] ubi0: background thread "ubi_bgt0d" started, PID 465
[    2.298895] block ubiblock0_0: created from ubi0:0(rootfs)
[    2.304411] ubiblock: device ubiblock0_0 (rootfs) set to be root filesystem
[    2.332472] Freeing unused kernel memory: 7168K
[    2.337081] Run /init as init process
[    2.446271] random: fast init done
[    2.519945] init: Console is alive
[    2.523529] init: - watchdog -
[    2.532586] kmodloader: loading kernel modules from /etc/modules-boot.d/*
[    2.540999] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    2.549980] ehci-fsl: Freescale EHCI Host controller driver
[    2.558405] ehci-orion: EHCI orion driver
[    2.562591] orion-ehci f1050000.ehci: EHCI Host Controller
[    2.568140] orion-ehci f1050000.ehci: new USB bus registered, assigned bus number 1
[    2.575942] orion-ehci f1050000.ehci: irq 30, io mem 0xf1050000
[    2.606263] orion-ehci f1050000.ehci: USB 2.0 started, EHCI 1.00
[    2.612767] hub 1-0:1.0: USB hub found
[    2.617064] hub 1-0:1.0: 1 port detected
[    2.623836] ehci-platform: EHCI generic platform driver
[    2.634799] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
[    2.644901] init: - preinit -
[    2.784825] random: jshn: uninitialized urandom read (4 bytes read)
[    2.822813] random: jshn: uninitialized urandom read (4 bytes read)
[    2.843697] random: jshn: uninitialized urandom read (4 bytes read)
[    2.906302] usb 1-1: new high-speed USB device number 2 using orion-ehci
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
[    7.062118] procd: - early -
[    7.065120] procd: - watchdog -
[    7.622420] procd: - watchdog -
[    7.625787] procd: - ubus -
[    7.680918] procd: - init -
Please press Enter to activate this console.
[    8.011265] kmodloader: loading kernel modules from /etc/modules.d/*
[    8.041132] urngd: v1.0.2 started.
[    8.139414] PPP generic driver version 2.4.2
[    8.146759] NET: Registered protocol family 24
[    8.178921] kmodloader: done loading kernel modules from /etc/modules.d/*
[    8.203124] random: crng init done
[    8.206576] random: 7 urandom warning(s) missed due to ratelimiting
[   18.421326] br-lan: port 1(eth0) entered blocking state
[   18.426610] br-lan: port 1(eth0) entered disabled state
[   18.432047] device eth0 entered promiscuous mode



BusyBox v1.35.0 (2022-05-20 19:00:24 UTC) built-in shell (ash)

  _______                     ________        __
 |       |.-----.-----.-----.|  |  |  |.----.|  |_
 |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
 |_______||   __|_____|__|__||________||__|  |____|
          |__| W I R E L E S S   F R E E D O M
 -----------------------------------------------------
 OpenWrt SNAPSHOT, r19689-19ef3b54f4
 -----------------------------------------------------
=== WARNING! =====================================
There is no root password defined on this device!
Use the "passwd" command to set up a new password
in order to prevent unauthorized SSH logins.
--------------------------------------------------
root@OpenWrt:/# 
```

以上でKERNELイメージはインストールできた。

### ネットワーク設定の変更

#### 失敗編の反省から
Open-WRTは、無線LANブロードバンドルーターをメインターゲットとしたOSであるため、ネットワーク設定もデフォルトではルーター用に都合のよい設定になっているみたいだ。
ReadyNAS Duo v2はネットワークにLANポート一基のみ搭載したシンプルなNASであるため、Bridgeなどのややこしいネットワーク構成はいらない。（ReadyNASは、完全にローカル向けで、外部インターネットに公開するつもりはない）
そこで、まず最初にネットワーク設定をシンプルなものに変更した。
同時にIPアドレスをDHCPでもらってくるのではなく、静的IP（192.168.10.2）となるようにした。
ついでにDNSもここで我が家のブロードバンドルーター（192.168.10.1）に設定した。


OpenWRTインストール直後のネットワークの状態と/etc/config/networkファイル
※LANケーブルは接続していないので、IPアドレスは割り当てられていない。

```
root@OpenWrt:/# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq master br-lan state DOWN qlen 1000
    link/ether 2c:b0:5d:bf:0d:35 brd ff:ff:ff:ff:ff:ff
3: br-lan: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN qlen 1000
    link/ether 2c:b0:5d:bf:0d:35 brd ff:ff:ff:ff:ff:ff
root@OpenWrt:/# 
root@OpenWrt:/# cat /etc/config/network

config interface 'loopback'
	option device 'lo'
	option proto 'static'
	option ipaddr '127.0.0.1'
	option netmask '255.0.0.0'

config globals 'globals'
	option ula_prefix 'fdba:d29d:b8ac::/48'

config device
	option name 'br-lan'
	option type 'bridge'
	list ports 'eth0'

config interface 'lan'
	option device 'br-lan'
	option proto 'dhcp'

config interface 'lan6'
	option device 'br-lan'
	option proto 'dhcpv6'

root@OpenWrt:/#
```

変更後の/etc/config/networkファイル
bridgeなどいらなさそうなのを削除する。dhcpをstaticに変える。

```
root@OpenWrt:/# vi /etc/config/network
root@OpenWrt:/# cat /etc/config/network

config interface 'loopback'
	option device 'lo'
	option proto 'static'
	option ipaddr '127.0.0.1'
	option netmask '255.0.0.0'

config interface 'lan'
	option device 'eth0'
	option proto 'static'
	option ipaddr '192.168.10.2'
	option netmask '255.255.255.0'
	option gateway '192.168.10.1'
        option dns  '192.168.10.1'

root@OpenWrt:/# 

```

ネットワークを再起動してみる。
```
root@OpenWrt:/# service network restart
[ 1200.347607] device eth0 left promiscuous mode
[ 1200.352037] br-lan: port 1(eth0) entered disabled state
root@OpenWrt:/# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen 1000
    link/ether 2c:b0:5d:bf:0d:35 brd ff:ff:ff:ff:ff:ff
    inet 192.168.10.2/24 brd 192.168.10.255 scope global eth0
       valid_lft forever preferred_lft forever
root@OpenWrt:/# 
```

よさげ。
ここで LANケーブルをつないでネットワークに接続する。

- WinSCPを使って SYSUPGRADEイメージ「openwrt-kirkwood-netgear_readynas-duo-v2-squashfs-sysupgrade.bin」をReadyNASに転送する （転送プロトコルはSCP、接続先のIP 192.168.10.2 ユーザーroot、パスワードは無し）

- sysupgrade実行

SCP転送したSYSUPGRADEイメージを指定して、sysupgradeを実行する。
```
# sysupgrade openwrt-kirkwood-netgear_readynas-duo-v2-squashfs-sysupgrade.bin
```

以上でOepnWRTのインストールは完了。




### Web設定 LuCI のインストール

ネットワーク越しにSSHできるようになったから、もうUSB-シリアル変換ケーブルは必要ない。
TeraTermでもRloginでもWLS2のUbuntuからでも何でもよいのでSSHで ReadyNAS (192.168.10.2) に接続

ネットワーク設定をちゃんとしたので、今回はopkgコマンドがIPv6で困った、なんてことはなく、すんなり入った。

```
opkg update
opkg install luci luci-base luci-i18n-base-ja 
```
ウェブブラウザから http://192.168.10.2/ に接続。やったLOL

{{:nas:スクリーンショット_2022-05-22_222206.png?400|}}
{{:nas:スクリーンショット_2022-05-22_222459.png?400|}}