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| author | Stijn Tintel <stijn@linux-ipv6.be> | 2019-02-25 15:05:07 +0200 |
|---|---|---|
| committer | Stijn Tintel <stijn@linux-ipv6.be> | 2021-08-22 18:07:51 +0300 |
| commit | 57807f50ded6cf0996284a850084183af13d5894 (patch) | |
| tree | b2557f17d5d090af7eea53c72e21a30593f0f08b | |
| parent | 31d984a96ee5227d4aa37ac2ff8a2d53fcecc412 (diff) | |
| download | upstream-57807f50ded6cf0996284a850084183af13d5894.tar.gz upstream-57807f50ded6cf0996284a850084183af13d5894.tar.bz2 upstream-57807f50ded6cf0996284a850084183af13d5894.zip | |
base-files: add option to make /var persistent
In OpenWrt, /var is symlinked to /tmp by default. This is done to reduce
the amount of writes to the flash chip, which often have not the
greatest durability. As a result, things like DHCP or UPnP lease files,
are not persistent across reboots.
Since OpenWrt can run on devices with more durable storage, it makes
sense to have an option for a persistent /var. Add an option to make
/var persistent. When enabled, /var will no longer be symlinked to /tmp,
but /var/run will be symlink to /tmp/run, as it should contains only
files that should not be kept during reboot. The option is off by
default, to maintain the current behaviour.
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
| -rw-r--r-- | config/Config-images.in | 8 | ||||
| -rw-r--r-- | package/base-files/Makefile | 5 |
2 files changed, 13 insertions, 0 deletions
diff --git a/config/Config-images.in b/config/Config-images.in index 4a7f08824b..92720fb84d 100644 --- a/config/Config-images.in +++ b/config/Config-images.in @@ -303,4 +303,12 @@ menu "Target Images" it will be mounted by PARTUUID which makes the kernel find the appropriate disk automatically. + config TARGET_ROOTFS_PERSIST_VAR + bool "Make /var persistent" + default n + help + Do not symlink /var to /tmp, so that its content will persist + across reboots. When enabled, /var/run will still be linked + to /tmp/run. + endmenu diff --git a/package/base-files/Makefile b/package/base-files/Makefile index d67f551b9c..6da3df2b4e 100644 --- a/package/base-files/Makefile +++ b/package/base-files/Makefile @@ -181,8 +181,13 @@ define Package/base-files/install mkdir -p $(1)/www mkdir -p $(1)/root $(LN) /proc/mounts $(1)/etc/mtab +ifeq ($(CONFIG_TARGET_ROOTFS_PERSIST_VAR),n) rm -f $(1)/var $(LN) tmp $(1)/var +else + mkdir -p $(1)/var + $(LN) /tmp/run $(1)/var/run +endif mkdir -p $(1)/etc $(LN) /tmp/resolv.conf /tmp/TZ /tmp/localtime $(1)/etc/ |