[LEDE-DEV] [PATCH] include: image.mk: ext4: double the default inode counter

[Bastian Bittorf]

A rootfs typically has lots of small files, so the default
counter with 1024 inodes for 16 megabytes partition size can
be too restrictive and leads to e.g.

root at box:/ touch /etc/config/test
touch: /etc/config/test: No space left on device

the solution is to just double the amount of inodes
during image creation, so a 16mb part has 2048 inodes.

see also:
http://lists.infradead.org/pipermail/lede-dev/2016-November/003977.html

Signed-off-by: Bastian Bittorf <bb at npl.de>
---
 include/image.mk | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/image.mk b/include/image.mk
index 8b183ab..e74a71d 100644
--- a/include/image.mk
+++ b/include/image.mk
@@ -239,11 +239,13 @@ define Image/mkfs/ubifs
 		-o $@ -d $(call mkfs_target_dir,$(1))
 endef
 
+# doubles the default inode amount
+INODES=$(shell echo $$(($(CONFIG_TARGET_ROOTFS_PARTSIZE)*64*2)))
 E2SIZE=$(shell echo $$(($(CONFIG_TARGET_ROOTFS_PARTSIZE)*1024*1024)))
 
 define Image/mkfs/ext4
 	$(STAGING_DIR_HOST)/bin/make_ext4fs \
-		-l $(E2SIZE) -b $(CONFIG_TARGET_EXT4_BLOCKSIZE) \
+		-l $(E2SIZE) -i $(INODES) -b $(CONFIG_TARGET_EXT4_BLOCKSIZE) \
 		$(if $(CONFIG_TARGET_EXT4_RESERVED_PCT),-m $(CONFIG_TARGET_EXT4_RESERVED_PCT)) \
 		$(if $(CONFIG_TARGET_EXT4_JOURNAL),,-J) \
 		$(if $(SOURCE_DATE_EPOCH),-T $(SOURCE_DATE_EPOCH)) \
-- 
1.9.1