#19564: after reboot - reset to defaults / firstboot by accident
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Reporter: bittorf@… | Owner: developers
Type: defect | Status: new
Priority: highest | Milestone:
Component: packages | Version: Trunk
Resolution: | Keywords:
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Comment (by hnyman):
It sounds like the problem comes from the rather new requirement in
overlayfs v23 and above that there is "upperdir" and "workdir". They are
created at mount. If flash is 100% full, that new directory can not be
created and overlayfs fails to mount.
Change in fstools in October 2014:
http://nbd.name/gitweb.cgi?p=fstools.git;a=commitdiff;h=d71297353dc45eaf8f7c252246490746708530f9;hp=04f863c7d831a18d388db980cc85b2bac37b3c8d
(but that should have been in trunk fstools already since 42890, so it may
be a combination of some additional changes)
Deleting the one leftover file from the previous session frees one block
and at the next boot the directory can be created, and then the overlayfs
filesystem mounts ok again.
For a fix, I ponder if 1-2 blocks should be reserved in jffs2 under normal
usage for overlayfs workdirs, so that there would always be room for
creating that workdir at boot.
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Ticket URL: <https://dev.openwrt.org/ticket/19564#comment:10>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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