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| author | Gabor Juhos <juhosg@openwrt.org> | 2012-11-29 17:37:15 +0000 |
|---|---|---|
| committer | Gabor Juhos <juhosg@openwrt.org> | 2012-11-29 17:37:15 +0000 |
| commit | 2dfb18cc0b07ab93fbb71802ad7681af031c9ec3 (patch) | |
| tree | caf9d6edbfa621a282bf9bb2bc04d8a7dd4294b9 /include | |
| parent | 3728865f2715a722c6d3ca26aa5bb3078086d082 (diff) | |
| download | upstream-2dfb18cc0b07ab93fbb71802ad7681af031c9ec3.tar.gz upstream-2dfb18cc0b07ab93fbb71802ad7681af031c9ec3.tar.bz2 upstream-2dfb18cc0b07ab93fbb71802ad7681af031c9ec3.zip | |
build: Add TARGET_ROOTFS_RESERVED_PCT option to reduce wasted space
The genext2fs tool will 'reserve' 5% of the image size by default,
apparently by creating a huge lost+found directory. In fact it seemed to
be much more than 5% in practice — I saw an image with 8MiB used, and
recovered about 2MiB of it by deleting the 'empty' lost+found directory:
/dev/loop0 48377 8482 37438 19% /mnt/spare
# rmdir lost+found/
/dev/loop0 48377 6014 39906 14% /mnt/spare
This makes it configurable, but leaves it at the genext2fs default
of 5% for now. It should probably be changed to default to zero, but
that can be a separate patch.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34408 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'include')
| -rw-r--r-- | include/image.mk | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/image.mk b/include/image.mk index 10850a6327..503115ddb0 100644 --- a/include/image.mk +++ b/include/image.mk @@ -124,7 +124,7 @@ ifneq ($(CONFIG_TARGET_ROOTFS_EXT4FS),) define Image/mkfs/ext4 # generate an ext2 fs - $(STAGING_DIR_HOST)/bin/genext2fs -U -b $(E2SIZE) -N $(CONFIG_TARGET_ROOTFS_MAXINODE) -d $(TARGET_DIR)/ $(KDIR)/root.ext4 + $(STAGING_DIR_HOST)/bin/genext2fs -U -b $(E2SIZE) -N $(CONFIG_TARGET_ROOTFS_MAXINODE) -d $(TARGET_DIR)/ $(KDIR)/root.ext4 -m $(CONFIG_TARGET_ROOTFS_RESERVED_PCT) # convert it to ext4 $(STAGING_DIR_HOST)/bin/tune2fs -O extents,uninit_bg,dir_index $(KDIR)/root.ext4 # fix it up |