kernel dump logs WRT3200ACM

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uvz123a
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Joined: 01 May 2023
Posts: 63
PostPosted: Thu Oct 24, 2024 19:01    Post subject: kernel dump logs WRT3200ACM Reply with quote
lexridge wrote:
Don't forget, if the crashes are being caused by a kernel dump, you can retrieve it without a serial connection by typing:
Code:
strings /dev/mtd20

If all you get back is a list of UBI# then the kernel has not crashed and the problem is elsewhere.


On my WRT3200ACM, there are no dump logs:
Code:
root@DD-WRT:~# strings /dev/mtd20
strings: /dev/mtd20: No such file or directory

What am I missing?

But there are some other files/directories:
Code:
root@DD-WRT:/dev# ls
0:0:0:0          hw_random        loop3            mtd1             mtd4             mtd8             mtdblock2        net              sda              ubi_ctrl         zero
1-1              i2c-0            loop4            mtd10            mtd4ro           mtd8ro           mtdblock3        null             tty              ubiblock0_0
console          kmsg             loop5            mtd10ro          mtd5             mtd9             mtdblock4        nvram            ttyS0            urandom
cpu_dma_latency  log              loop6            mtd1ro           mtd5ro           mtd9ro           mtdblock5        port             ttyS1            usb1
crypto           loop-control     loop7            mtd2             mtd6             mtdblock         mtdblock6        ppp              tun              usb2
full             loop0            mtd              mtd2ro           mtd6ro           mtdblock0        mtdblock7        ptmx             ubi0             usb3
gpiochip0        loop1            mtd0             mtd3             mtd7             mtdblock1        mtdblock8        pts              ubi0_0           watchdog
gpiochip1        loop2            mtd0ro           mtd3ro           mtd7ro           mtdblock10       mtdblock9        random           ubi0_1           watchdog0
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lexridge
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Posts: 2143
Location: WV, USA
PostPosted: Thu Oct 24, 2024 19:16    Post subject: Reply with quote
uvz123a wrote:

On my WRT3200ACM, there are no dump logs:
Code:
root@DD-WRT:~# strings /dev/mtd20
strings: /dev/mtd20: No such file or directory

What am I missing?

I don't think the oops partition exists on any other routers except AX routers. You can verify this by typing:
#cat /proc/mtd
If oops is not in the list, you don't have it.
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uvz123a
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Joined: 01 May 2023
Posts: 63
PostPosted: Thu Oct 24, 2024 19:28    Post subject: Reply with quote
No.

Code:
root@DD-WRT:~# cat /proc/mtd
dev:    size   erasesize  name
mtd0: 00200000 00020000 "u-boot"
mtd1: 00020000 00020000 "u_env"
mtd2: 00020000 00020000 "s_env"
mtd3: 00040000 00020000 "devinfo"
mtd4: 001e0000 00020000 "sysdiag"
mtd5: 04f00000 00020000 "linux"
mtd6: 04900000 00020000 "ubi"
mtd7: 04f00000 00020000 "linux2"
mtd8: 04900000 00020000 "rootfs2"
mtd9: 00040000 00020000 "nvram"
mtd10: 05500000 00020000 "ddwrt"
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kernel-panic69
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Joined: 08 May 2018
Posts: 16215
Location: Texas, USA
PostPosted: Thu Oct 24, 2024 20:30    Post subject: Reply with quote
Yes, the oops partition does not exist on Marvell. Sorry for not sharing that information publicly. Embarassed
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