hnyman
June 3, 2020, 7:03pm
21
To add into psherman's explanation, you can only really delete stuff that exists in /overlay/upper directory. Those are the files & packages that you have added after flashing the image.
E.g. in my own overlay there are only a few settings, stats backup etc.
root@router1:~# df -h
Filesystem Size Used Available Use% Mounted on
/dev/root 7.3M 7.3M 0 100% /rom
tmpfs 232.4M 1004.0K 231.4M 0% /tmp
/dev/ubi0_1 75.1M 240.0K 71.0M 0% /overlay
overlayfs:/overlay 75.1M 240.0K 71.0M 0% /
tmpfs 512.0K 0 512.0K 0% /dev
root@router1:~# du -d 2 /overlay/upper/
52 /overlay/upper/etc/opkg
12 /overlay/upper/etc/dropbear
0 /overlay/upper/etc/luci-uploads
4 /overlay/upper/etc/adblock
152 /overlay/upper/etc/backup.stats
0 /overlay/upper/etc/uci-defaults
104 /overlay/upper/etc/config
388 /overlay/upper/etc
24 /overlay/upper/lib/firmware
24 /overlay/upper/lib
0 /overlay/upper/mnt/mtdblock6
0 /overlay/upper/mnt
4 /overlay/upper/usr/libexec
4 /overlay/upper/usr
416 /overlay/upper/
2 Likes
Lll
June 3, 2020, 7:26pm
22
i have
root@LEDE:~# df -h
Filesystem Size Used Available Use% Mounted on
/dev/root 2.3M 2.3M 0 100% /rom
tmpfs 13.8M 460.0K 13.3M 3% /tmp
tmpfs 13.8M 48.0K 13.7M 0% /tmp/root
tmpfs 512.0K 0 512.0K 0% /dev
/dev/mtdblock3 512.0K 260.0K 252.0K 51% /overlay
overlayfs:/overlay 512.0K 260.0K 252.0K 51% /
how i can delete some files here?
Lll
June 3, 2020, 7:32pm
23
i can not go to /overlay directory directly (as the dev/mtdblock3)
root@LEDE:~# df -h
Filesystem Size Used Available Use% Mounted on
/dev/root 2.3M 2.3M 0 100% /rom
tmpfs 13.8M 460.0K 13.3M 3% /tmp
tmpfs 13.8M 48.0K 13.7M 0% /tmp/root
tmpfs 512.0K 0 512.0K 0% /dev
/dev/mtdblock3 512.0K 260.0K 252.0K 51% /overlay
overlayfs:/overlay 512.0K 260.0K 252.0K 51% /
root@LEDE:~# cd /dev/mtdblock3
-ash: cd: can't cd to /dev/mtdblock3
root@LEDE:~# cd /overlay
root@LEDE:/overlay# ls
upper work
root@LEDE:/overlay# rm upper
rm: 'upper' is a directory
root@LEDE:/overlay# rm -rf upper
root@LEDE:/overlay# ls
work
root@LEDE:/overlay# rm -rf work
root@LEDE:/overlay# ls
root@LEDE:/overlay# df -h
Filesystem Size Used Available Use% Mounted on
/dev/root 2.3M 2.3M 0 100% /rom
tmpfs 13.8M 460.0K 13.3M 3% /tmp
tmpfs 13.8M 48.0K 13.7M 0% /tmp/root
tmpfs 512.0K 0 512.0K 0% /dev
/dev/mtdblock3 512.0K 264.0K 248.0K 52% /overlay
overlayfs:/overlay 512.0K 264.0K 248.0K 52% /
root@LEDE:/overlay#
why i become no more place at /overlay ? i have delete all directories in...
hnyman
June 3, 2020, 7:32pm
24
Normally. Like I said a few mesages ago.
cd /overlay/upper
rm something...
Lll
June 3, 2020, 7:34pm
25
i have try this
root@LEDE:~# cd /overlay/upper
-ash: cd: can't cd to /overlay/upper
hnyman
June 3, 2020, 7:34pm
26
Have you already rebooted?
Reboot should allow overlayfs to notice that there no files any more in /overlay
Lll
June 3, 2020, 7:37pm
27
yes i have rebooted
after deleting and reboot
root@LEDE:~# df -h
Filesystem Size Used Available Use% Mounted on
/dev/root 2.3M 2.3M 0 100% /rom
tmpfs 13.8M 76.0K 13.7M 1% /tmp
tmpfs 13.8M 48.0K 13.7M 0% /tmp/root
tmpfs 512.0K 0 512.0K 0% /dev
/dev/mtdblock3 512.0K 240.0K 272.0K 47% /overlay
overlayfs:/overlay 512.0K 240.0K 272.0K 47% /
root@LEDE:~#
Lll
June 3, 2020, 7:45pm
28
what i do wrong?
root@LEDE:~# df -h
Filesystem Size Used Available Use% Mounted on
/dev/root 2.3M 2.3M 0 100% /rom
tmpfs 13.8M 76.0K 13.7M 1% /tmp
tmpfs 13.8M 48.0K 13.7M 0% /tmp/root
tmpfs 512.0K 0 512.0K 0% /dev
/dev/mtdblock3 512.0K 240.0K 272.0K 47% /overlay
overlayfs:/overlay 512.0K 240.0K 272.0K 47% /
root@LEDE:~# cd /overlay/upper
root@LEDE:/overlay/upper# ls
etc
root@LEDE:/overlay/upper# rm -rf etc
root@LEDE:/overlay/upper# ls
root@LEDE:/overlay/upper# df -h
Filesystem Size Used Available Use% Mounted on
/dev/root 2.3M 2.3M 0 100% /rom
tmpfs 13.8M 76.0K 13.7M 1% /tmp
tmpfs 13.8M 48.0K 13.7M 0% /tmp/root
tmpfs 512.0K 0 512.0K 0% /dev
/dev/mtdblock3 512.0K 236.0K 276.0K 46% /overlay
overlayfs:/overlay 512.0K 236.0K 276.0K 46% /
root@LEDE:/overlay/upper# reboot
root@LEDE:~# df -h
Filesystem Size Used Available Use% Mounted on
/dev/root 2.3M 2.3M 0 100% /rom
tmpfs 13.8M 76.0K 13.7M 1% /tmp
tmpfs 13.8M 48.0K 13.7M 0% /tmp/root
tmpfs 512.0K 0 512.0K 0% /dev
/dev/mtdblock3 512.0K 252.0K 260.0K 49% /overlay
overlayfs:/overlay 512.0K 252.0K 260.0K 49% /
You might be better off simply resetting to defaults -- this will erase everything you have installed or stored on your router, and restore the basic configuration. Then you can see how much free space really exists.
make a backup before you reset so that you can at least restore the basic config files.