Need help with Extroot

[JunaidShafi]

can anyone help me i tried to setup extroot but it is showing

[ 6.705329] block: extroot: unable to lookup root device /dev/ubiblock0_2

attached are the sys logs

28131] ehci-fsl: Freescale EHCI Host controller driver
[ 3.034408] ehci-platform: EHCI generic platform driver
[ 3.041101] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 3.047840] ohci-platform: OHCI generic platform driver
[ 3.055101] kmodloader: done loading kernel modules from /etc/modules-boot.d/ *
[ 3.069763] init: - preinit -
[ 3.392593] mtk_ppe: roaming work has been activated
[ 3.397612] mtk_soc_eth 15100000.ethernet eth0: configuring for fixed/2500bas e-x link mode
[ 3.405958] mtk_soc_eth 15100000.ethernet eth0: Link is Up - 2.5Gbps/Full - f low control rx/tx
[ 3.413865] mtk_soc_eth 15100000.ethernet eth1-gmac: renamed from eth1
[ 3.444141] mtk_soc_eth 15100000.ethernet eth1-gmac: configuring for fixed/25 00base-x link mode
[ 3.452960] mtk_soc_eth 15100000.ethernet eth1-gmac: Link is Up - 2.5Gbps/Ful l - flow control rx/tx
[ 3.458589] mt7530 mdio-bus:1f eth1: renamed from wan0
[ 3.492491] mt7530 mdio-bus:1f eth1: configuring for phy/gmii link mode
[ 3.499621] 8021q: adding VLAN 0 to HW filter on device eth1
[ 5.579592] mount_root: loading kmods from internal overlay
[ 5.595234] kmodloader: loading kernel modules from //etc/modules-boot.d/*
[ 5.603244] kmodloader: done loading kernel modules from //etc/modules-boot.d /*
[ 6.480835] UBIFS (ubi0:3): Mounting in unauthenticated mode
[ 6.486583] UBIFS (ubi0:3): background thread "ubifs_bgt0_3" started, PID 104 6
[ 6.506395] UBIFS (ubi0:3): recovery needed
[ 6.617970] UBIFS (ubi0:3): recovery completed
[ 6.622480] UBIFS (ubi0:3): UBIFS: mounted UBI device 0, volume 3, name "root fs_data"
[ 6.630303] UBIFS (ubi0:3): LEB size: 126976 bytes (124 KiB), min./max. I/O u nit sizes: 2048 bytes/2048 bytes
[ 6.640206] UBIFS (ubi0:3): FS size: 7237632 bytes (6 MiB, 57 LEBs), journal size 1015809 bytes (0 MiB, 6 LEBs)
[ 6.650282] UBIFS (ubi0:3): reserved for root: 341850 bytes (333 KiB)
[ 6.656713] UBIFS (ubi0:3): media format: w5/r0 (latest is w5/r0), UUID B9225 D9E-62C5-474E-AAB4-7D02DDA972AC, small LPT model
[ 6.669181] block: attempting to load /tmp/ubifs_cfg/upper/etc/config/fstab
[ 6.696879] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts:
[ 6.705329] block: extroot: unable to lookup root device /dev/ubiblock0_2
[ 6.726451] UBIFS (ubi0:3): un-mount UBI device 0

[frollic]

@JunaidShafi

[ 6.705329] block: extroot: unable to lookup root device /dev/ubiblock0_2

feels kind of self explainatory ...

use the </> button when you post cli output.

and be patient.

[brada4]

What device is that ubus call system board and what are you planning to do with terabyte in overlay?

[JunaidShafi]

this is a jio isp router. It is just an 8 gb pendrive i want to install adguard home on it.

[brada4]

It appears you are using firmware that is not from the official OpenWrt project.

When using forks/offshoots/vendor-specific builds that are "based on OpenWrt", there may be many differences compared to the official versions (hosted by OpenWrt.org). Some of these customizations may fundamentally change the way that OpenWrt works. You might need help from people with specific/specialized knowledge about the firmware you are using, so it is possible that advice you get here may not be useful.

You may find that the best options are:

1. Install an official version of OpenWrt, if your device is supported (see https://firmware-selector.openwrt.org).
2. Ask for help from the maintainer(s) or user community of the specific firmware that you are using.
3. Provide the source code for the firmware so that users on this forum can understand how your firmware works (OpenWrt forum users are volunteers, so somebody might look at the code if they have time and are interested in your issue).

If you believe that this specific issue is common to generic/official OpenWrt and/or the maintainers of your build have indicated as such, please feel free to clarify.