Semi-bricked Archer C7 V2

[ektus]

Hi there,

I've got myself a problem

My production main router is caught in a boot loop. I was modifying some firewall rules from the GUI when all of a sudden the router would stop responding and I lost internet access. The rooter boots and immediately shuts down again, the uptime is too short to enter the GUI. Disconnected USB (it's also doing duty as a small NAS) and WAN, problem persists.

I was able to enter failsafe mode and ssh into the router, but somehow all configuration seems to be gone. SSH would not accept my password but the default "password", all folder dates are from 2017. It looks like mount_root does nothing. My latest backup seems to be from December, 2017, so many later settings (mainly DHCP and firewall) would have to be repaired manually after firstboot. I'd like to rescue those, but need advice as to if that's at all possible in the current state of the router.

I did not issue any firstboot or other reset command yet, only pressing the reset button some.

Code: Select all

Using username "root".
root@192.168.1.1's password:


BusyBox v1.23.2 (2017-10-25 11:54:23 EDT) built-in shell (ash)

------------------------------------------------------------------
|            _____                             _                 |
|           |  __ \                           | |                |
|           | |  \/ __ _ _ __ __ _  ___  _   _| | ___            |
|           | | __ / _` | '__/ _` |/ _ \| | | | |/ _ \           |
|           | |_\ \ (_| | | | (_| | (_) | |_| | |  __/           |
|            \____/\__,_|_|  \__, |\___/ \__, |_|\___|           |
|                             __/ |       __/ |                  |
|                            |___/       |___/                   |
|                                                                |
|----------------------------------------------------------------|
| Gargoyle version 1.10.0   | OpenWrt Chaos Calmer branch        |
| Gargoyle revision ab16f958| OpenWrt commit 216adcf             |
| Built October 25, 2017    | Target  ar71xx/ath10k-large        |
------------------------------------------------------------------
root@(none):~# cd ..
root@(none):/# ls -l
drwxr-xr-x    2 root     root           697 Oct 25  2017 bin
drwxr-xr-x    3 root     root           780 Jan  1 00:00 dev
drwxr-xr-x   22 root     root          1127 Oct 25  2017 etc
drwxr-xr-x   11 root     root           873 Oct 25  2017 lib
drwxr-xr-x    2 root     root             3 Oct 25  2017 mnt
drwxr-xr-x    2 root     root             3 Oct 25  2017 overlay
dr-xr-xr-x   33 root     root             0 Jan  1 00:00 proc
drwxr-xr-x    2 root     root            27 Oct 25  2017 rom
drwxr-xr-x    2 root     root             3 Oct 25  2017 root
drwxr-xr-x    2 root     root           850 Oct 25  2017 sbin
dr-xr-xr-x   11 root     root             0 Jan  1 00:00 sys
drwxrwxrwt    7 root     root           220 Jan  1 00:00 tmp
drwxr-xr-x    6 root     root            74 Oct 25  2017 usr
lrwxrwxrwx    1 root     root             4 Oct 25  2017 var -> /tmp
drwxr-xr-x    9 root     root          1511 Oct 25  2017 www
root@(none):/# df
Filesystem           1K-blocks      Used Available Use% Mounted on
rootfs                    8960      8960         0 100% /
/dev/root                 8960      8960         0 100% /
tmpfs                      512         0       512   0% /dev
tmpfs                    63040        24     63016   0% /tmp
root@(none):/# mount_root
root@(none):/# df
Filesystem           1K-blocks      Used Available Use% Mounted on
rootfs                    8960      8960         0 100% /
/dev/root                 8960      8960         0 100% /
tmpfs                      512         0       512   0% /dev
tmpfs                    63040        24     63016   0% /tmp
root@(none):/# dmesg
[    0.000000] Linux version 3.18.75 (eric@Osiris) (gcc version 4.8.3 (OpenWrt/Linaro GCC 4.8-2014.04 r49389) ) #4 Wed Oct 25 12:20:37 EDT 2017
[    0.000000] MyLoader: sysp=af6df1bf, boardp=a981e5a7, parts=7fedede0
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 00019750 (MIPS 74Kc)
[    0.000000] SoC: Qualcomm Atheros QCA9558 ver 1 rev 0
[    0.000000] Determined physical RAM map:
[    0.000000]  memory: 08000000 @ 00000000 (usable)
[    0.000000] Initrd not found or empty - disabling initrd
[    0.000000] Zone ranges:
[    0.000000]   Normal   [mem 0x00000000-0x07ffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x00000000-0x07ffffff]
[    0.000000] Initmem setup node 0 [mem 0x00000000-0x07ffffff]
[    0.000000] On node 0 totalpages: 32768
[    0.000000] free_area_init_node: node 0, pgdat 80369df0, node_mem_map 81000000
[    0.000000]   Normal zone: 256 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 32768 pages, LIFO batch:7
[    0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
[    0.000000] Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 bytes
[    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[    0.000000] pcpu-alloc: [0] 0
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
[    0.000000] Kernel command line:  board=ARCHER-C7  console=ttyS0,115200 rootfstype=squashfs,jffs2 noinitrd
[    0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
[    0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
[    0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
[    0.000000] Writing ErrCtl register=00000000
[    0.000000] Readback ErrCtl register=00000000
[    0.000000] Memory: 125856K/131072K available (2540K kernel code, 141K rwdata, 540K rodata, 224K init, 188K bss, 5216K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] NR_IRQS:51
[    0.000000] Clocks: CPU:720.000MHz, DDR:600.000MHz, AHB:200.000MHz, Ref:40.000MHz
[    0.000000] Calibrating delay loop... 358.80 BogoMIPS (lpj=1794048)
[    0.060000] pid_max: default: 32768 minimum: 301
[    0.060000] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.070000] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.070000] NET: Registered protocol family 16
[    0.080000] MIPS: machine is TP-LINK Archer C7
[    0.080000] ar724x-pci ar724x-pci.0: PCIe link is down
[    0.090000] registering PCI controller with io_map_base unset
[    0.090000] registering PCI controller with io_map_base unset
[    0.540000] PCI host bridge to bus 0000:00
[    0.550000] pci_bus 0000:00: root bus resource [mem 0x10000000-0x11ffffff]
[    0.550000] pci_bus 0000:00: root bus resource [io  0x0000]
[    0.560000] pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
[    0.560000] pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 00
[    0.560000] PCI host bridge to bus 0000:01
[    0.570000] pci_bus 0000:01: root bus resource [mem 0x12000000-0x13ffffff]
[    0.570000] pci_bus 0000:01: root bus resource [io  0x0001]
[    0.580000] pci_bus 0000:01: No busn resource found for root bus, will use [bus 01-ff]
[    0.580000] pci 0000:01:00.0: [168c:003c] type 00 class 0x028000
[    0.580000] pci 0000:01:00.0: reg 0x10: [mem 0x00000000-0x001fffff 64bit]
[    0.580000] pci 0000:01:00.0: reg 0x30: [mem 0x00000000-0x0000ffff pref]
[    0.580000] pci 0000:01:00.0: supports D1 D2
[    0.580000] pci_bus 0000:01: busn_res: [bus 01-ff] end is updated to 01
[    0.580000] pci 0000:01:00.0: BAR 0: assigned [mem 0x12000000-0x121fffff 64bit]
[    0.590000] pci 0000:01:00.0: BAR 6: assigned [mem 0x12200000-0x1220ffff pref]
[    0.590000] pci 0000:01:00.0: using irq 41 for pin 1
[    0.600000] Switched to clocksource MIPS
[    0.600000] NET: Registered protocol family 2
[    0.610000] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.610000] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[    0.620000] TCP: Hash tables configured (established 1024 bind 1024)
[    0.630000] TCP: reno registered
[    0.630000] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.640000] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.640000] NET: Registered protocol family 1
[    0.650000] PCI: CLS 0 bytes, default 32
[    0.650000] futex hash table entries: 256 (order: -1, 3072 bytes)
[    0.660000] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.670000] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    0.680000] msgmni has been set to 245
[    0.680000] io scheduler noop registered
[    0.690000] io scheduler deadline registered (default)
[    0.690000] Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled
[    0.700000] console [ttyS0] disabled
[    0.720000] serial8250.0: ttyS0 at MMIO 0x18020000 (irq = 11, base_baud = 2500000) is a 16550A
[    0.730000] console [ttyS0] enabled
[    0.740000] bootconsole [early0] disabled
[    0.750000] m25p80 spi0.0: found w25q128, expected m25p80
[    0.760000] m25p80 spi0.0: w25q128 (16384 Kbytes)
[    0.760000] 5 tp-link partitions found on MTD device spi0.0
[    0.770000] Creating 5 MTD partitions on "spi0.0":
[    0.770000] 0x000000000000-0x000000020000 : "u-boot"
[    0.780000] 0x000000020000-0x00000013c1f8 : "kernel"
[    0.780000] 0x00000013c1f8-0x000000ff0000 : "rootfs"
[    0.790000] mtd: device 2 (rootfs) set to be root filesystem
[    0.790000] 1 squashfs-split partitions found on MTD device rootfs
[    0.800000] 0x0000009e0000-0x000000ff0000 : "rootfs_data"
[    0.810000] 0x000000ff0000-0x000001000000 : "art"
[    0.810000] 0x000000020000-0x000000ff0000 : "firmware"
[    0.840000] switch0: Atheros AR8327 rev. 4 switch registered on ag71xx-mdio.0
[    0.930000] libphy: ag71xx_mdio: probed
[    1.530000] ag71xx ag71xx.0: connected to PHY at ag71xx-mdio.0:00 [uid=004dd034, driver=Atheros AR8216/AR8236/AR8316]
[    1.540000] eth0: Atheros AG71xx at 0xb9000000, irq 4, mode:RGMII
[    2.130000] eth1: Atheros AG71xx at 0xba000000, irq 5, mode:SGMII
[    2.130000] TCP: cubic registered
[    2.140000] NET: Registered protocol family 17
[    2.140000] bridge: automatic filtering via arp/ip/ip6tables has been deprecated. Update your scripts to load br_netfilter if you need this.
[    2.150000] Bridge firewalling registered
[    2.160000] 8021q: 802.1Q VLAN Support v1.8
[    2.170000] VFS: Mounted root (squashfs filesystem) readonly on device 31:2.
[    2.180000] Freeing unused kernel memory: 224K
[    3.440000] init: Console is alive
[    3.440000] init: - watchdog -
[    6.210000] usbcore: registered new interface driver usbfs
[    6.220000] usbcore: registered new interface driver hub
[    6.220000] usbcore: registered new device driver usb
[    6.260000] SCSI subsystem initialized
[    6.270000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    6.280000] ehci-platform: EHCI generic platform driver
[    6.280000] ehci-platform ehci-platform.0: EHCI Host Controller
[    6.290000] ehci-platform ehci-platform.0: new USB bus registered, assigned bus number 1
[    6.300000] ehci-platform ehci-platform.0: TX-TX IDP fix enabled
[    6.300000] ehci-platform ehci-platform.0: irq 48, io mem 0x1b000000
[    6.330000] ehci-platform ehci-platform.0: USB 2.0 started, EHCI 1.00
[    6.330000] hub 1-0:1.0: USB hub found
[    6.340000] hub 1-0:1.0: 1 port detected
[    6.340000] ehci-platform ehci-platform.1: EHCI Host Controller
[    6.350000] ehci-platform ehci-platform.1: new USB bus registered, assigned bus number 2
[    6.360000] ehci-platform ehci-platform.1: TX-TX IDP fix enabled
[    6.360000] ehci-platform ehci-platform.1: irq 49, io mem 0x1b400000
[    6.390000] ehci-platform ehci-platform.1: USB 2.0 started, EHCI 1.00
[    6.390000] hub 2-0:1.0: USB hub found
[    6.400000] hub 2-0:1.0: 1 port detected
[    6.400000] usbcore: registered new interface driver usb-storage
[    6.540000] init: - preinit -
[    7.480000] eth1: link up (1000Mbps/Full duplex)
[    7.500000] random: procd urandom read with 11 bits of entropy available
[   75.190000] random: nonblocking pool is initialized

[RomanHK]

Here's the first tutorial:
viewtopic.php?f=12&t=10912#p52470
or
If you get into ssh, run this line and the loop should stop.

Code: Select all

rm -r /usr/data/* && reboot -f

This will erase the damaged bandwidth usage data and the use of the web pages.

[Lantis]

That doesn’t look like failsafe. It looks like a fully booted device. And you’re saying that it looks like all your settings are now gone?

It’s possible you triggered a firstboit by holding the button down too long.

[ektus]

Here's the first tutorial:
viewtopic.php?f=12&t=10912#p52470
or
If you get into ssh, run this line and the loop should stop.

Code: Select all

rm -r /usr/data/* && reboot -f

This will erase the damaged bandwidth usage data and the use of the web pages.

I can't get into ssh due to the loop. It doesn't look like that's the cause anyway, as it shouldn't be triggered when WAN disconnected, should it?

[ektus]

That doesn’t look like failsafe. It looks like a fully booted device. And you’re saying that it looks like all your settings are now gone?

It’s possible you triggered a firstboit by holding the button down too long.

Maybe I did, Is this documented somewhere? The only thing I read everywhere is "30-30-30 does nothing on Gargoyle/OpenWRT". Anyway, even if it did firstboot, why is it still loopping?

There are no data to be found that are newer than build time, /etc/config/firewall for example looks virgin.

I'm going to check the now-disconnected external drive if there are some router data on that one, but it should have been in usb storage mode, not extroot.

I am (and was yesterday) in failsafe, the power LED blinking rapidly and it also states so in the boot message. An I'm definitely on the right router, every other network is disconnected. I've been cutting too much last time, here's a complete transcript:

Code: Select all

Using username "root".
root@192.168.1.1's password:


BusyBox v1.23.2 (2017-10-25 11:54:23 EDT) built-in shell (ash)

------------------------------------------------------------------
|            _____                             _                 |
|           |  __ \                           | |                |
|           | |  \/ __ _ _ __ __ _  ___  _   _| | ___            |
|           | | __ / _` | '__/ _` |/ _ \| | | | |/ _ \           |
|           | |_\ \ (_| | | | (_| | (_) | |_| | |  __/           |
|            \____/\__,_|_|  \__, |\___/ \__, |_|\___|           |
|                             __/ |       __/ |                  |
|                            |___/       |___/                   |
|                                                                |
|----------------------------------------------------------------|
| Gargoyle version 1.10.0   | OpenWrt Chaos Calmer branch        |
| Gargoyle revision ab16f958| OpenWrt commit 216adcf             |
| Built October 25, 2017    | Target  ar71xx/ath10k-large        |
------------------------------------------------------------------
================= FAILSAFE MODE active ================
special commands:
* firstboot          reset settings to factory defaults
* mount_root     mount root-partition with config files

after mount_root:
* passwd                         change root's password
* /etc/config               directory with config files

for more help see:
http://wiki.openwrt.org/doc/howto/generic.failsafe
=======================================================

root@(none):~# cd ..
root@(none):/# ls -l
drwxr-xr-x    2 root     root           697 Oct 25  2017 bin
drwxr-xr-x    3 root     root           780 Jan  1 00:00 dev
drwxr-xr-x   22 root     root          1127 Oct 25  2017 etc
drwxr-xr-x   11 root     root           873 Oct 25  2017 lib
drwxr-xr-x    2 root     root             3 Oct 25  2017 mnt
drwxr-xr-x    2 root     root             3 Oct 25  2017 overlay
dr-xr-xr-x   33 root     root             0 Jan  1 00:00 proc
drwxr-xr-x    2 root     root            27 Oct 25  2017 rom
drwxr-xr-x    2 root     root             3 Oct 25  2017 root
drwxr-xr-x    2 root     root           850 Oct 25  2017 sbin
dr-xr-xr-x   11 root     root             0 Jan  1 00:00 sys
drwxrwxrwt    7 root     root           220 Jan  1 00:00 tmp
drwxr-xr-x    6 root     root            74 Oct 25  2017 usr
lrwxrwxrwx    1 root     root             4 Oct 25  2017 var -> /tmp
drwxr-xr-x    9 root     root          1511 Oct 25  2017 www
root@(none):/# df
Filesystem           1K-blocks      Used Available Use% Mounted on
rootfs                    8960      8960         0 100% /
/dev/root                 8960      8960         0 100% /
tmpfs                      512         0       512   0% /dev
tmpfs                    63040        24     63016   0% /tmp
root@(none):/# cd usr
root@(none):/usr# ls -l
drwxr-xr-x    2 root     root          1446 Oct 25  2017 bin
drwxr-xr-x   10 root     root          2704 Oct 25  2017 lib
drwxr-xr-x    2 root     root          1205 Oct 25  2017 sbin
drwxr-xr-x    6 root     root            78 Oct 25  2017 share
root@(none):/usr# logread
Failed to connect to ubus
root@(none):/usr# dmesg
[    0.000000] Linux version 3.18.75 (eric@Osiris) (gcc version 4.8.3 (OpenWrt/Linaro GCC 4.8-2014.04 r49389) ) #4                                                         Wed Oct 25 12:20:37 EDT 2017
[    0.000000] MyLoader: sysp=bfb7b5af, boardp=a181a5e3, parts=3fa4fce9
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 00019750 (MIPS 74Kc)
[    0.000000] SoC: Qualcomm Atheros QCA9558 ver 1 rev 0
[    0.000000] Determined physical RAM map:
[    0.000000]  memory: 08000000 @ 00000000 (usable)
[    0.000000] Initrd not found or empty - disabling initrd
[    0.000000] Zone ranges:
[    0.000000]   Normal   [mem 0x00000000-0x07ffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x00000000-0x07ffffff]
[    0.000000] Initmem setup node 0 [mem 0x00000000-0x07ffffff]
[    0.000000] On node 0 totalpages: 32768
[    0.000000] free_area_init_node: node 0, pgdat 80369df0, node_mem_map 81000000
[    0.000000]   Normal zone: 256 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 32768 pages, LIFO batch:7
[    0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
[    0.000000] Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 bytes
[    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[    0.000000] pcpu-alloc: [0] 0
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
[    0.000000] Kernel command line:  board=ARCHER-C7  console=ttyS0,115200 rootfstype=squashfs,jffs2 noinitrd
[    0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
[    0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
[    0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
[    0.000000] Writing ErrCtl register=00000000
[    0.000000] Readback ErrCtl register=00000000
[    0.000000] Memory: 125856K/131072K available (2540K kernel code, 141K rwdata, 540K rodata, 224K init, 188K bss,                                                         5216K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] NR_IRQS:51
[    0.000000] Clocks: CPU:720.000MHz, DDR:600.000MHz, AHB:200.000MHz, Ref:40.000MHz
[    0.000000] Calibrating delay loop... 358.80 BogoMIPS (lpj=1794048)
[    0.060000] pid_max: default: 32768 minimum: 301
[    0.060000] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.070000] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.070000] NET: Registered protocol family 16
[    0.080000] MIPS: machine is TP-LINK Archer C7
[    0.080000] ar724x-pci ar724x-pci.0: PCIe link is down
[    0.090000] registering PCI controller with io_map_base unset
[    0.090000] registering PCI controller with io_map_base unset
[    0.540000] PCI host bridge to bus 0000:00
[    0.550000] pci_bus 0000:00: root bus resource [mem 0x10000000-0x11ffffff]
[    0.550000] pci_bus 0000:00: root bus resource [io  0x0000]
[    0.560000] pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
[    0.560000] pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 00
[    0.560000] PCI host bridge to bus 0000:01
[    0.570000] pci_bus 0000:01: root bus resource [mem 0x12000000-0x13ffffff]
[    0.570000] pci_bus 0000:01: root bus resource [io  0x0001]
[    0.580000] pci_bus 0000:01: No busn resource found for root bus, will use [bus 01-ff]
[    0.580000] pci 0000:01:00.0: [168c:003c] type 00 class 0x028000
[    0.580000] pci 0000:01:00.0: reg 0x10: [mem 0x00000000-0x001fffff 64bit]
[    0.580000] pci 0000:01:00.0: reg 0x30: [mem 0x00000000-0x0000ffff pref]
[    0.580000] pci 0000:01:00.0: supports D1 D2
[    0.580000] pci_bus 0000:01: busn_res: [bus 01-ff] end is updated to 01
[    0.580000] pci 0000:01:00.0: BAR 0: assigned [mem 0x12000000-0x121fffff 64bit]
[    0.590000] pci 0000:01:00.0: BAR 6: assigned [mem 0x12200000-0x1220ffff pref]
[    0.590000] pci 0000:01:00.0: using irq 41 for pin 1
[    0.600000] Switched to clocksource MIPS
[    0.600000] NET: Registered protocol family 2
[    0.610000] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.610000] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[    0.620000] TCP: Hash tables configured (established 1024 bind 1024)
[    0.630000] TCP: reno registered
[    0.630000] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.640000] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.640000] NET: Registered protocol family 1
[    0.650000] PCI: CLS 0 bytes, default 32
[    0.650000] futex hash table entries: 256 (order: -1, 3072 bytes)
[    0.660000] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.670000] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    0.680000] msgmni has been set to 245
[    0.680000] io scheduler noop registered
[    0.690000] io scheduler deadline registered (default)
[    0.690000] Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled
[    0.700000] console [ttyS0] disabled
[    0.720000] serial8250.0: ttyS0 at MMIO 0x18020000 (irq = 11, base_baud = 2500000) is a 16550A
[    0.730000] console [ttyS0] enabled
[    0.740000] bootconsole [early0] disabled
[    0.750000] m25p80 spi0.0: found w25q128, expected m25p80
[    0.760000] m25p80 spi0.0: w25q128 (16384 Kbytes)
[    0.760000] 5 tp-link partitions found on MTD device spi0.0
[    0.770000] Creating 5 MTD partitions on "spi0.0":
[    0.770000] 0x000000000000-0x000000020000 : "u-boot"
[    0.780000] 0x000000020000-0x00000013c1f8 : "kernel"
[    0.780000] 0x00000013c1f8-0x000000ff0000 : "rootfs"
[    0.790000] mtd: device 2 (rootfs) set to be root filesystem
[    0.790000] 1 squashfs-split partitions found on MTD device rootfs
[    0.800000] 0x0000009e0000-0x000000ff0000 : "rootfs_data"
[    0.810000] 0x000000ff0000-0x000001000000 : "art"
[    0.810000] 0x000000020000-0x000000ff0000 : "firmware"
[    0.840000] switch0: Atheros AR8327 rev. 4 switch registered on ag71xx-mdio.0
[    0.930000] libphy: ag71xx_mdio: probed
[    1.530000] ag71xx ag71xx.0: connected to PHY at ag71xx-mdio.0:00 [uid=004dd034, driver=Atheros AR8216/AR8236/AR                                                        8316]
[    1.540000] eth0: Atheros AG71xx at 0xb9000000, irq 4, mode:RGMII
[    2.130000] eth1: Atheros AG71xx at 0xba000000, irq 5, mode:SGMII
[    2.130000] TCP: cubic registered
[    2.140000] NET: Registered protocol family 17
[    2.140000] bridge: automatic filtering via arp/ip/ip6tables has been deprecated. Update your scripts to load br                                                        _netfilter if you need this.
[    2.150000] Bridge firewalling registered
[    2.160000] 8021q: 802.1Q VLAN Support v1.8
[    2.170000] VFS: Mounted root (squashfs filesystem) readonly on device 31:2.
[    2.180000] Freeing unused kernel memory: 224K
[    3.440000] init: Console is alive
[    3.440000] init: - watchdog -
[    6.210000] usbcore: registered new interface driver usbfs
[    6.210000] usbcore: registered new interface driver hub
[    6.220000] usbcore: registered new device driver usb
[    6.260000] SCSI subsystem initialized
[    6.270000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    6.280000] ehci-platform: EHCI generic platform driver
[    6.280000] ehci-platform ehci-platform.0: EHCI Host Controller
[    6.290000] ehci-platform ehci-platform.0: new USB bus registered, assigned bus number 1
[    6.300000] ehci-platform ehci-platform.0: TX-TX IDP fix enabled
[    6.300000] ehci-platform ehci-platform.0: irq 48, io mem 0x1b000000
[    6.330000] ehci-platform ehci-platform.0: USB 2.0 started, EHCI 1.00
[    6.330000] hub 1-0:1.0: USB hub found
[    6.340000] hub 1-0:1.0: 1 port detected
[    6.340000] ehci-platform ehci-platform.1: EHCI Host Controller
[    6.350000] ehci-platform ehci-platform.1: new USB bus registered, assigned bus number 2
[    6.360000] ehci-platform ehci-platform.1: TX-TX IDP fix enabled
[    6.360000] ehci-platform ehci-platform.1: irq 49, io mem 0x1b400000
[    6.390000] ehci-platform ehci-platform.1: USB 2.0 started, EHCI 1.00
[    6.390000] hub 2-0:1.0: USB hub found
[    6.400000] hub 2-0:1.0: 1 port detected
[    6.400000] usbcore: registered new interface driver usb-storage
[    6.540000] init: - preinit -
[    7.480000] eth1: link up (1000Mbps/Full duplex)
[    7.500000] random: procd urandom read with 11 bits of entropy available
[   76.130000] random: nonblocking pool is initialized
root@(none):/usr# mount_root
root@(none):/usr# cd ..
root@(none):/# ls -l
drwxr-xr-x    2 root     root           697 Oct 25  2017 bin
drwxr-xr-x    3 root     root           780 Jan  1 00:00 dev
drwxr-xr-x   22 root     root          1127 Oct 25  2017 etc
drwxr-xr-x   11 root     root           873 Oct 25  2017 lib
drwxr-xr-x    2 root     root             3 Oct 25  2017 mnt
drwxr-xr-x    2 root     root             3 Oct 25  2017 overlay
dr-xr-xr-x   33 root     root             0 Jan  1 00:00 proc
drwxr-xr-x    2 root     root            27 Oct 25  2017 rom
drwxr-xr-x    2 root     root             3 Oct 25  2017 root
drwxr-xr-x    2 root     root           850 Oct 25  2017 sbin
dr-xr-xr-x   11 root     root             0 Jan  1 00:00 sys
drwxrwxrwt    7 root     root           220 Jan  1 00:00 tmp
drwxr-xr-x    6 root     root            74 Oct 25  2017 usr
lrwxrwxrwx    1 root     root             4 Oct 25  2017 var -> /tmp
drwxr-xr-x    9 root     root          1511 Oct 25  2017 www
root@(none):/# cd usr
root@(none):/usr# ls -l
drwxr-xr-x    2 root     root          1446 Oct 25  2017 bin
drwxr-xr-x   10 root     root          2704 Oct 25  2017 lib
drwxr-xr-x    2 root     root          1205 Oct 25  2017 sbin
drwxr-xr-x    6 root     root            78 Oct 25  2017 share
root@(none):/usr#

[Lantis]

Yes well that log is definitely from failsafe, but the first one (unless you cut out the failsafe text under the banner) is not.

I don't know if it is really documented anywhere, but in the firmware it does map one of the buttons to reset. holding it for 3 seconds or more triggers a firstboot and then reboots the router.

[ektus]

Yes well that log is definitely from failsafe, but the first one (unless you cut out the failsafe text under the banner) is not.

That's what I said, I was cutting too much text. I was only ever able to log in via SSH once the router was in failsafe.

I don't know if it is really documented anywhere, but in the firmware it does map one of the buttons to reset. holding it for 3 seconds or more triggers a firstboot and then reboots the router.

At which point? And which button on the Archer C7? I've only been messing with the reset button. During the slow-blinking phase of the boot? If so, I might have triggered it


But even if so, it should boot regularly, which it doesn't

[Lantis]

The system needs to be at least mostly booted to handle the button interrupt, it would be hard to say how long that requires. But it would be before the reboot loop occurred in general.

It's hard to know what state the router is now in, but my suggestion would be to "firstboot -y" it again and see if that fixes it. Otherwise, flash a new version from within Failsafe and see if that fixes it (don't preserve settings). At this point it looks like your config is cooked anyway.

[ektus]

Something fishy has been going on here... I've attached the external drive to my Linux PC. Trying to backup it, I got an error message. Started e2fsck, and that one reports thousands of multiply-claimed blocks. I'll have to purge the affected directories, as there's no way to know which of the files are okay. Luckily, they are only backup files (yet).

[RomanHK]

Something fishy has been going on here... I've attached the external drive to my Linux PC. Trying to backup it, I got an error message. Started e2fsck, and that one reports thousands of multiply-claimed blocks. I'll have to purge the affected directories, as there's no way to know which of the files are okay. Luckily, they are only backup files (yet).

So to understand and summarize, do you still have a USB drive connected and use it as an extroot?
And when you disconnect a USB drive, will the router normally boot up?