image: ext4: allow to choose a block size for the rootfs
Signed-off-by: Michael Heimpold <mhei@heimpold.de> SVN-Revision: 40924
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2 changed files with 26 additions and 2 deletions
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@ -86,6 +86,30 @@ menu "Target Images"
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help
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Allows you to change the percentage of reserved blocks in the root filesystem
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choice
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prompt "Root filesystem block size""
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default TARGET_EXT4_BLOCKSIZE_4K
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depends TARGET_ROOTFS_EXT4FS
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help
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Allows you to change the block size of the root filesystem
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config TARGET_EXT4_BLOCKSIZE_4K
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bool "4k"
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config TARGET_EXT4_BLOCKSIZE_2K
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bool "2k"
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config TARGET_EXT4_BLOCKSIZE_1K
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bool "1k"
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endchoice
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config TARGET_EXT4_BLOCKSIZE
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int
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default 4096 if TARGET_EXT4_BLOCKSIZE_4K
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default 2048 if TARGET_EXT4_BLOCKSIZE_2K
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default 1024 if TARGET_EXT4_BLOCKSIZE_1K
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depends TARGET_ROOTFS_EXT4FS
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config TARGET_ROOTFS_ISO
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bool "iso"
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default n
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@ -184,11 +184,11 @@ ifneq ($(CONFIG_TARGET_ROOTFS_TARGZ),)
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endif
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ifneq ($(CONFIG_TARGET_ROOTFS_EXT4FS),)
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E2SIZE=$(shell echo $$(($(CONFIG_TARGET_ROOTFS_PARTSIZE)*1024)))
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E2SIZE=$(shell echo $$(($(CONFIG_TARGET_ROOTFS_PARTSIZE)*1024*1024/$(CONFIG_TARGET_EXT4_BLOCKSIZE))))
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define Image/mkfs/ext4
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# generate an ext2 fs
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$(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) $(MKFS_DEVTABLE_OPT)
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$(STAGING_DIR_HOST)/bin/genext2fs -U -B $(CONFIG_TARGET_EXT4_BLOCKSIZE) -b $(E2SIZE) -N $(CONFIG_TARGET_ROOTFS_MAXINODE) -d $(TARGET_DIR)/ $(KDIR)/root.ext4 -m $(CONFIG_TARGET_ROOTFS_RESERVED_PCT) $(MKFS_DEVTABLE_OPT)
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# convert it to ext4
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$(STAGING_DIR_HOST)/bin/tune2fs -O extents,uninit_bg,dir_index $(KDIR)/root.ext4
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# fix it up
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