#19564: after reboot - reset to defaults / firstboot by accident
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Reporter: bittorf@… | Owner: developers
Type: defect | Status: closed
Priority: highest | Milestone:
Component: packages | Version: Trunk
Resolution: fixed | Keywords:
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Comment (by bittorf@…):
i tried to enforce a readonly-mount with filling up JFFS2 and afterwards
deleting something: this works:
{{{
root@box:~# df -h
Filesystem Size Used Available Use% Mounted on
rootfs 448.0K 260.0K 188.0K 58% /
/dev/root 2.3M 2.3M 0 100% /rom
tmpfs 13.9M 128.0K 13.8M 1% /tmp
/dev/mtdblock3 448.0K 260.0K 188.0K 58% /overlay
overlayfs:/overlay 448.0K 260.0K 188.0K 58% /
tmpfs 512.0K 0 512.0K 0% /dev
root@box:~# dd if=/dev/urandom of=/www/test.bin bs=16k count=999
dd: writing '/www/test.bin': No space left on device
11+0 records in
9+1 records out
root@box:~# reboot && exit
# (after login again)
root@box:~# mount # (see ro-mount of overlayfs)
rootfs on / type rootfs (rw)
/dev/root on /rom type squashfs (ro,relatime)
proc on /proc type proc (rw,noatime)
sysfs on /sys type sysfs (rw,noatime)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev,noatime)
/dev/mtdblock3 on /overlay type jffs2 (rw,noatime)
overlayfs:/overlay on / type overlay
(ro,noatime,lowerdir=/,upperdir=/overlay/upper,workdir=/overlay/work)
tmpfs on /dev type tmpfs (rw,relatime,size=512k,mode=755)
devpts on /dev/pts type devpts (rw,relatime,mode=600)
debugfs on /sys/kernel/debug type debugfs (rw,noatime)
root@box:~# ls -l /overlay/upper/www/test.bin
-rw-r--r-- 1 root root 159744 Jun 3 20:51
/overlay/upper/www/test.bin
root@box:~# df -h
Filesystem Size Used Available Use% Mounted on
rootfs 448.0K 408.0K 40.0K 91% /
/dev/root 2.3M 2.3M 0 100% /rom
tmpfs 13.9M 120.0K 13.8M 1% /tmp
/dev/mtdblock3 448.0K 408.0K 40.0K 91% /overlay
overlayfs:/overlay 448.0K 408.0K 40.0K 91% /
tmpfs 512.0K 0 512.0K 0% /dev
root@box:~# rm /overlay/upper/www/test.bin
root@box:~# df -h
Filesystem Size Used Available Use% Mounted on
rootfs 448.0K 252.0K 196.0K 56% /
/dev/root 2.3M 2.3M 0 100% /rom
tmpfs 13.9M 120.0K 13.8M 1% /tmp
/dev/mtdblock3 448.0K 252.0K 196.0K 56% /overlay
overlayfs:/overlay 448.0K 252.0K 196.0K 56% /
tmpfs 512.0K 0 512.0K 0% /dev
}}}
i will send a patch to the mailinglist with as a proposal...
--
Ticket URL: <https://dev.openwrt.org/ticket/19564#comment:47>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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