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authorSergey Ryazanov <ryazanov.s.a@gmail.com>2020-04-24 17:04:14 +0300
committerPetr Štetiar <ynezz@true.cz>2020-06-03 16:49:28 +0200
commit880c1f0336616b0b5692ff284f83923011c548f2 (patch)
treee80bf770f32078603a3528ee5269d98e38937954 /package/base-files/files/lib
parent2171493f7fc28cb134594a779f08a9797b558444 (diff)
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base-files: prevent issues w/ overlay on powerloss after sysupgrade
Due to filesystem write caching the old configuration data could stay out of flash for a long time during a first boot after the sysupgrade. Power loss during this period could damage the overlay data and even make device inaccessable via the network. Fix this by syncing data to a flash as soon as the previous configuration will be unpacked after the sysupgrade. Also sync the FS state after the sysupgrade.tgz archive removing to prevent duplicative extraction of a previous configuration. Tested with AMD Geode based board. Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Diffstat (limited to 'package/base-files/files/lib')
-rw-r--r--package/base-files/files/lib/preinit/80_mount_root2
1 files changed, 2 insertions, 0 deletions
diff --git a/package/base-files/files/lib/preinit/80_mount_root b/package/base-files/files/lib/preinit/80_mount_root
index f3fe788e19..265a3f18df 100644
--- a/package/base-files/files/lib/preinit/80_mount_root
+++ b/package/base-files/files/lib/preinit/80_mount_root
@@ -9,6 +9,8 @@ do_mount_root() {
echo "- config restore -"
cd /
tar xzf /sysupgrade.tgz
+ # Prevent configuration corruption on a power loss
+ sync
}
}