image_types: add support for modern f2fs flash filesystem
PATCH 1/1 image_types: add support for modern f2fs flash filesystem
The f2fs filesystem is a newer flash filesystem that is available in meta-filesystems. This needs a minimum sized blank space to operate in correctly.
The f2fs has overprovision functionality and when building smaller filesystems, you actually need more space, therefore under 500M (or so) double the amount of space needed in order to handle the overprovision functions in f2fs.
--- meta/classes/image_types.bbclass | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)
meta/classes/image_types.bbclass +21 -0
@@ -218,6 +218,24 @@ IMAGE_CMD_ubi () { IMAGE_CMD_ubifs = "mkfs.ubifs -r ${IMAGE_ROOTFS} -o ${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.ubifs ${MKUBIFS_ARGS}" +MKF2FS_ARGS = "" +FIX_F2FS_SIZE ?= "524288" +IMAGE_CMD_f2fs () { + # We need to add additional smarts here form devices smaller than 1.5G + # Need to scale appropriately between 40M -> 1.5G as the "overprovision + # ratio" goes down as the device gets bigger (70% -> 4.5%), below about + # 500M the standard IMAGE_OVERHEAD_FACTOR does not work, so add additional + # space here when under 500M + size=${ROOTFS_SIZE} + if [ ${size} -lt ${FIX_F2FS_SIZE} ] ; then + size=`expr ${size}*2` + bbwarn "Rootfs size is too small for F2FS. Filesystem will be extended to ${size}K" + fi + dd if=/dev/zero of=${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.f2fs count=${size} bs=1024 + mkfs.f2fs ${MKF2FS_ARGS} ${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.f2fs + sload.f2fs -f ${IMAGE_ROOTFS} ${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.f2fs +} + EXTRA_IMAGECMD = "" inherit siteinfo kernel-arch
@@ -231,6 +249,7 @@ EXTRA_IMAGECMD_ext3 ?= "-i 4096" EXTRA_IMAGECMD_ext4 ?= "-i 4096" EXTRA_IMAGECMD_btrfs ?= "-n 4096" EXTRA_IMAGECMD_elf ?= "" +EXTRA_IMAGECMD_f2fs ?= "" do_image_jffs2[depends] += "mtd-utils-native:do_populate_sysroot" do_image_cramfs[depends] += "util-linux-native:do_populate_sysroot"
@@ -246,6 +265,7 @@ do_image_elf[depends] += "virtual/kernel:do_populate_sysroot mkelfimage-native:d do_image_ubi[depends] += "mtd-utils-native:do_populate_sysroot" do_image_ubifs[depends] += "mtd-utils-native:do_populate_sysroot" do_image_multiubi[depends] += "mtd-utils-native:do_populate_sysroot" +do_image_f2fs[depends] += "f2fs-tools-native:do_populate_sysroot" # This variable is available to request which values are suitable for IMAGE_FSTYPES IMAGE_TYPES = " \
@@ -264,6 +284,7 @@ IMAGE_TYPES = " \ elf \ wic wic.gz wic.bz2 wic.lzma \ container \ + f2fs \ " # Compression is a special case of conversion. The old variable
Signature · 1 line
2.13.6
Quoted 26 lines · Saul Wold
The f2fs filesystem is a newer flash filesystem that is available in meta-filesystems. This needs a minimum sized blank space to operate in correctly.
The f2fs has overprovision functionality and when building smaller filesystems, you actually need more space, therefore under 500M (or so) double the amount of space needed in order to handle the overprovision functions in f2fs.
Signed-off-by Saul Wold <[email protected]>--- meta/classes/image_types.bbclass | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)meta/classes/image_types.bbclass +4
-0@@ -218,6 +218,24 @@ IMAGE_CMD_ubi () { IMAGE_CMD_ubifs = "mkfs.ubifs -r ${IMAGE_ROOTFS} -o ${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.ubifs ${MKUBIFS_ARGS}" +MKF2FS_ARGS = "" +FIX_F2FS_SIZE ?= "524288" +IMAGE_CMD_f2fs () { + # We need to add additional smarts here form devices smaller than 1.5G
meta/classes/image_types.bbclass IMAGE_CMD_ubi () { · line 234
Quoted 10 lines
meta/classes/image_types.bbclass +10
-0+ # Need to scale appropriately between 40M -> 1.5G as the "overprovision + # ratio" goes down as the device gets bigger (70% -> 4.5%), below about + # 500M the standard IMAGE_OVERHEAD_FACTOR does not work, so add additional + # space here when under 500M + size=${ROOTFS_SIZE} + if [ ${size} -lt ${FIX_F2FS_SIZE} ] ; then + size=`expr ${size}*2` + bbwarn "Rootfs size is too small for F2FS. Filesystem will be extended to ${size}K" + fi + dd if=/dev/zero of=${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.f2fs count=${size} bs=1024
The equivalent dd command in oe_mkext234fs() creates a sparse file. Any reason not to do so here (and in IMAGE_CMD_btrfs()) ?
meta/classes/image_types.bbclass EXTRA_IMAGECMD_ext3 ?= "-i 4096" · line 252
Quoted 12 lines
meta/classes/image_types.bbclass +5
-0+ mkfs.f2fs ${MKF2FS_ARGS} ${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.f2fs + sload.f2fs -f ${IMAGE_ROOTFS} ${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.f2fs +} + EXTRA_IMAGECMD = "" inherit siteinfo kernel-arch@@ -231,6 +249,7 @@ EXTRA_IMAGECMD_ext3 ?= "-i 4096" EXTRA_IMAGECMD_ext4 ?= "-i 4096" EXTRA_IMAGECMD_btrfs ?= "-n 4096" EXTRA_IMAGECMD_elf ?= "" +EXTRA_IMAGECMD_f2fs ?= ""
This probably doesn't need to be defined (since IMAGE_CMD_f2fs() uses MKF2FS_ARGS to pass custom arguments, rather than using EXTRA_IMAGECMD as the other image commands do) ?
Quoted 26 lines
meta/classes/image_types.bbclass +2
-1do_image_jffs2[depends] += "mtd-utils-native:do_populate_sysroot" do_image_cramfs[depends] += "util-linux-native:do_populate_sysroot"@@ -246,6 +265,7 @@ do_image_elf[depends] += "virtual/kernel:do_populate_sysroot mkelfimage-native:d do_image_ubi[depends] += "mtd-utils-native:do_populate_sysroot" do_image_ubifs[depends] += "mtd-utils-native:do_populate_sysroot" do_image_multiubi[depends] += "mtd-utils-native:do_populate_sysroot" +do_image_f2fs[depends] += "f2fs-tools-native:do_populate_sysroot" # This variable is available to request which values are suitable for IMAGE_FSTYPES IMAGE_TYPES = " \@@ -264,6 +284,7 @@ IMAGE_TYPES = " \ elf \ wic wic.gz wic.bz2 wic.lzma \ container \ + f2fs \ " # Compression is a special case of conversion. The old variable --2.13.6
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