At first everything is working fine, in the middle of installing additional scripts via LuCI to support DDNS auto-updates it starts to report installation failure. Try "opkg update" from the command line:
# opkg update
Downloading https://downloads.openwrt.org/snapshots/targets/ramips/mt7621/packages/Packages.gz
*** Failed to download the package list from https://downloads.openwrt.org/snapshots/targets/ramips/mt7621/packages/Packages.gz
Downloading https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/base/Packages.gz
*** Failed to download the package list from https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/base/Packages.gz
Downloading https://downloads.openwrt.org/snapshots/targets/ramips/mt7621/kmods/5.4.159-1-d5d247d0664fcfbbf7d57e7a9a274ff2/Packages.gz
*** Failed to download the package list from https://downloads.openwrt.org/snapshots/targets/ramips/mt7621/kmods/5.4.159-1-d5d247d0664fcfbbf7d57e7a9a274ff2/Packages.gz
Downloading https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/luci/Packages.gz
*** Failed to download the package list from https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/luci/Packages.gz
Downloading https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/packages/Packages.gz
*** Failed to download the package list from https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/packages/Packages.gz
Downloading https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/routing/Packages.gz
*** Failed to download the package list from https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/routing/Packages.gz
Downloading https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/telephony/Packages.gz
*** Failed to download the package list from https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/telephony/Packages.gz
Collected errors:
* opkg_download: Failed to download https://downloads.openwrt.org/snapshots/targets/ramips/mt7621/packages/Packages.gz, wget returned 1.
* opkg_download: Failed to download https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/base/Packages.gz, wget returned 1.
* opkg_download: Failed to download https://downloads.openwrt.org/snapshots/targets/ramips/mt7621/kmods/5.4.159-1-d5d247d0664fcfbbf7d57e7a9a274ff2/Packages.gz, wget returned 1.
* opkg_download: Failed to download https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/luci/Packages.gz, wget returned 1.
* opkg_download: Failed to download https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/packages/Packages.gz, wget returned 1.
* opkg_download: Failed to download https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/routing/Packages.gz, wget returned 1.
* opkg_download: Failed to download https://downloads.openwrt.org/snapshots/packages/mipsel_24kc/telephony/Packages.gz, wget returned 1.
Web interface reported "opkg update command failed with code 7"From the Web interface it actually reported "opkg update command failed with code 7"
Your headline say you have 21.02.1 but opkg tries to download for a snapshot but it should try to download from the 21.02.1 files from the address I have linked to above.
Why did you say 21.02.1 in the headline then if you knew you had a snapshot!?
If we talk snapshot these links works for about a day at best then it is obsolete and you need a new openwrt install. That was the short and easy version.
Just upgraded to Stable via LuCI, I found that root file system is being mounted to ram disk, all configuration are lost upon router reboot, any idea how to fix this? -----------------------------------------------------
** OpenWrt 21.02.1, r16325-88151b8303**
** -----------------------------------------------------**
# dmesg | grep ubi
[ 2.007394] 0x000000580000-0x000002980000 : "ubi"
[ 2.807767] ubi0: attaching mtd6
[ 3.176665] ubi0: scanning is finished
[ 3.196709] ubi0: attached mtd6 (name "ubi", size 36 MiB)
[ 3.202130] ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
[ 3.208984] ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
[ 3.215755] ubi0: VID header offset: 2048 (aligned 2048), data offset: 4096
[ 3.222698] ubi0: good PEBs: 288, bad PEBs: 0, corrupted PEBs: 0
[ 3.228687] ubi0: user volume: 2, internal volumes: 1, max. volumes count: 128
[ 3.235892] ubi0: max/mean erase counter: 2/1, WL threshold: 4096, image sequence number: 1637958789
[ 3.244996] ubi0: available PEBs: 0, total reserved PEBs: 288, PEBs reserved for bad PEB handling: 20
[ 3.254219] ubi0: background thread "ubi_bgt0d" started, PID 503
[ 3.256004] block ubiblock0_0: created from ubi0:0(rootfs)
[ 3.265706] ubiblock: device ubiblock0_0 (rootfs) set to be root filesystem
[ 10.473559] UBIFS (ubi0:1): Mounting in unauthenticated mode
[ 10.479236] UBIFS error (ubi0:1 pid 652): 0x802371dc: 'compressor "zstd" is not compiled in
[ 10.488550] mount_root: failed to mount -t ubifs /dev/ubi0_1 /tmp/overlay: No error information
[ 10.505088] mount_root: switching to ubifs overlay
[ 10.509986] mount_root: switching to ubifs failed - fallback to ramoverlay
# dmesg | grep jffs2
[ 0.000000] Kernel command line: console=ttyS0,115200 rootfstype=squashfs,jffs2
[ 0.527713] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
# dmesg | grep overlay
[ 10.488550] mount_root: failed to mount -t ubifs /dev/ubi0_1 /tmp/overlay: No error information
[ 10.497601] mount_root: overlay filesystem has not been fully initialized yet
[ 10.505088] mount_root: switching to ubifs overlay
[ 10.509986] mount_root: switching to ubifs failed - fallback to ramoverlay
LuCI Flash new firmware image and UNcheck "Keep settings ..."
Upload and flash again: openwrt-21.02.1-ramips-mt7621-linksys_ea7500-v2-squashfs-sysupgrade
