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Retry adjusting the size computation for reserved blocks. 

Due to the change in https://lwn.net/Articles/546473/, kernel reserves a
few extra blocks (lesser of 2% and 4096 blocks) on ext4 FS which leads to
OTA update failures. Adjust the size computation if the device has
BOARD_HAS_EXT4_RESERVED_BLOCKS := true.

It amends the last attemp in [1]. Now it computes the used blocks from the
make_ext4fs output, instead of altering its argument.

[1]: commit efbb5d2e69.

Bug: 21522719
Bug: 22023465
Bug: 22174684
Change-Id: I9783a51abe6581ff5c75db81e78ac606d0f32c4c
This commit is contained in:
Tao Bao 2015-06-23 11:16:05 -07:00
parent 2384d01c1c
commit c7a6f1e4f8
2 changed files with 68 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
core/Makefile
View File

@ -733,6 +733,7 @@ $(if $(INTERNAL_USERIMAGES_EXT_VARIANT),$(hide) echo "fs_type=$(INTERNAL_USERIMA
$(if $(BOARD_SYSTEMIMAGE_PARTITION_SIZE),$(hide) echo "system_size=$(BOARD_SYSTEMIMAGE_PARTITION_SIZE)" >> $(1))
$(if $(BOARD_SYSTEMIMAGE_FILE_SYSTEM_TYPE),$(hide) echo "system_fs_type=$(BOARD_SYSTEMIMAGE_FILE_SYSTEM_TYPE)" >> $(1))
$(if $(BOARD_SYSTEMIMAGE_JOURNAL_SIZE),$(hide) echo "system_journal_size=$(BOARD_SYSTEMIMAGE_JOURNAL_SIZE)" >> $(1))
$(if $(BOARD_HAS_EXT4_RESERVED_BLOCKS),$(hide) echo "has_ext4_reserved_blocks=$(BOARD_HAS_EXT4_RESERVED_BLOCKS)" >> $(1))
$(if $(BOARD_SYSTEMIMAGE_SQUASHFS_COMPRESSOR),$(hide) echo "system_squashfs_compressor=$(BOARD_SYSTEMIMAGE_SQUASHFS_COMPRESSOR)" >> $(1))
$(if $(BOARD_SYSTEMIMAGE_SQUASHFS_COMPRESSOR_OPT),$(hide) echo "system_squashfs_compressor_opt=$(BOARD_SYSTEMIMAGE_SQUASHFS_COMPRESSOR_OPT)" >> $(1))
$(if $(BOARD_USERDATAIMAGE_FILE_SYSTEM_TYPE),$(hide) echo "userdata_fs_type=$(BOARD_USERDATAIMAGE_FILE_SYSTEM_TYPE)" >> $(1))
@ -997,7 +998,15 @@ define build-systemimage-target
$(TARGET_OUT) $(systemimage_intermediates)/system_image_info.txt $(1) \
|| ( echo "Out of space? the tree size of $(TARGET_OUT) is (MB): " 1>&2 ;\
du -sm $(TARGET_OUT) 1>&2;\
echo "The max is $$(( $(BOARD_SYSTEMIMAGE_PARTITION_SIZE) / 1048576 )) MB." 1>&2 ;\
if [ "$(INTERNAL_USERIMAGES_EXT_VARIANT)" == "ext4" ]; then \
maxsize=$(BOARD_SYSTEMIMAGE_PARTITION_SIZE); \
if [ "$(BOARD_HAS_EXT4_RESERVED_BLOCKS)" == "true" ]; then \
maxsize=$$((maxsize - 4096 * 4096)); \
fi; \
echo "The max is $$(( maxsize / 1048576 )) MB." 1>&2 ;\
else \
echo "The max is $$(( $(BOARD_SYSTEMIMAGE_PARTITION_SIZE) / 1048576 )) MB." 1>&2 ;\
fi; \
mkdir -p $(DIST_DIR); cp $(INSTALLED_FILES_FILE) $(DIST_DIR)/installed-files-rescued.txt; \
exit 1 )
endef
@ -1480,6 +1489,9 @@ endif
ifdef BOARD_RECOVERYIMAGE_PARTITION_SIZE
$(hide) echo "recovery_size=$(BOARD_RECOVERYIMAGE_PARTITION_SIZE)" >> $(zip_root)/META/misc_info.txt
endif
ifdef BOARD_HAS_EXT4_RESERVED_BLOCKS
$(hide) echo "has_ext4_reserved_blocks=$(BOARD_HAS_EXT4_RESERVED_BLOCKS)" >> $(zip_root)/META/misc_info.txt
endif
ifdef TARGET_RECOVERY_FSTYPE_MOUNT_OPTIONS
@# TARGET_RECOVERY_FSTYPE_MOUNT_OPTIONS can be empty to indicate that nothing but defaults should be used.
$(hide) echo "recovery_mount_options=$(TARGET_RECOVERY_FSTYPE_MOUNT_OPTIONS)" >> $(zip_root)/META/misc_info.txt

71
tools/releasetools/build_image.py
View File

@ -22,6 +22,7 @@ Usage: build_image input_directory properties_file output_image_file
"""
import os
import os.path
import re
import subprocess
import sys
import commands
@ -34,17 +35,18 @@ OPTIONS = common.OPTIONS
FIXED_SALT = "aee087a5be3b982978c923f566a94613496b417f2af592639bc80d141e34dfe7"
def RunCommand(cmd):
""" Echo and run the given command
"""Echo and run the given command.
Args:
cmd: the command represented as a list of strings.
Returns:
The exit code.
A tuple of the output and the exit code.
"""
print "Running: ", " ".join(cmd)
p = subprocess.Popen(cmd)
p.communicate()
return p.returncode
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
output, _ = p.communicate()
print "%s" % (output.rstrip(),)
return (output, p.returncode)
def GetVerityTreeSize(partition_size):
cmd = "build_verity_tree -s %d"
@ -146,7 +148,7 @@ def UnsparseImage(sparse_image_path, replace=True):
else:
return True, unsparse_image_path
inflate_command = ["simg2img", sparse_image_path, unsparse_image_path]
exit_code = RunCommand(inflate_command)
(_, exit_code) = RunCommand(inflate_command)
if exit_code != 0:
os.remove(unsparse_image_path)
return False, None
@ -241,11 +243,12 @@ def BuildImage(in_dir, prop_dict, out_file):
fs_spans_partition = True
if fs_type.startswith("squash"):
fs_spans_partition = False
fs_spans_partition = False
is_verity_partition = "verity_block_device" in prop_dict
verity_supported = prop_dict.get("verity") == "true"
# adjust the partition size to make room for the hashes if this is to be verified
# Adjust the partition size to make room for the hashes if this is to be
# verified.
if verity_supported and is_verity_partition and fs_spans_partition:
partition_size = int(prop_dict.get("partition_size"))
@ -307,8 +310,15 @@ def BuildImage(in_dir, prop_dict, out_file):
staging_system = os.path.join(in_dir, "system")
shutil.rmtree(staging_system, ignore_errors=True)
shutil.copytree(origin_in, staging_system, symlinks=True)
reserved_blocks = prop_dict.get("has_ext4_reserved_blocks") == "true"
ext4fs_output = None
try:
exit_code = RunCommand(build_command)
if reserved_blocks and fs_type.startswith("ext4"):
(ext4fs_output, exit_code) = RunCommand(build_command)
else:
(_, exit_code) = RunCommand(build_command)
finally:
if in_dir != origin_in:
# Clean up temporary directories and files.
@ -318,17 +328,42 @@ def BuildImage(in_dir, prop_dict, out_file):
if exit_code != 0:
return False
# Bug: 21522719, 22023465
# There are some reserved blocks on ext4 FS (lesser of 4096 blocks and 2%).
# We need to deduct those blocks from the available space, since they are
# not writable even with root privilege. It only affects devices using
# file-based OTA and a kernel version of 3.10 or greater (currently just
# sprout).
if reserved_blocks and fs_type.startswith("ext4"):
assert ext4fs_output is not None
ext4fs_stats = re.compile(
r'Created filesystem with .* (?P<used_blocks>[0-9]+)/'
r'(?P<total_blocks>[0-9]+) blocks')
m = ext4fs_stats.match(ext4fs_output.strip().split('\n')[-1])
used_blocks = int(m.groupdict().get('used_blocks'))
total_blocks = int(m.groupdict().get('total_blocks'))
reserved_blocks = min(4096, int(total_blocks * 0.02))
adjusted_blocks = total_blocks - reserved_blocks
if used_blocks > adjusted_blocks:
mount_point = prop_dict.get("mount_point")
print("Error: Not enough room on %s (total: %d blocks, used: %d blocks, "
"reserved: %d blocks, available: %d blocks)" % (
mount_point, total_blocks, used_blocks, reserved_blocks,
adjusted_blocks))
return False
if not fs_spans_partition:
mount_point = prop_dict.get("mount_point")
partition_size = int(prop_dict.get("partition_size"))
image_size = os.stat(out_file).st_size
if image_size > partition_size:
print "Error: %s image size of %d is larger than partition size of %d" % (mount_point, image_size, partition_size)
return False
print("Error: %s image size of %d is larger than partition size of "
"%d" % (mount_point, image_size, partition_size))
return False
if verity_supported and is_verity_partition:
if 2 * image_size - AdjustPartitionSizeForVerity(image_size) > partition_size:
print "Error: No more room on %s to fit verity data" % mount_point
return False
if 2 * image_size - AdjustPartitionSizeForVerity(image_size) > partition_size:
print "Error: No more room on %s to fit verity data" % mount_point
return False
prop_dict["original_partition_size"] = prop_dict["partition_size"]
prop_dict["partition_size"] = str(image_size)
@ -344,7 +379,7 @@ def BuildImage(in_dir, prop_dict, out_file):
# Run e2fsck on the inflated image file
e2fsck_command = ["e2fsck", "-f", "-n", unsparse_image]
exit_code = RunCommand(e2fsck_command)
(_, exit_code) = RunCommand(e2fsck_command)
os.remove(unsparse_image)
@ -391,6 +426,7 @@ def ImagePropFromGlobalDict(glob_dict, mount_point):
copy_prop("system_verity_block_device", "verity_block_device")
copy_prop("system_root_image", "system_root_image")
copy_prop("ramdisk_dir", "ramdisk_dir")
copy_prop("has_ext4_reserved_blocks", "has_ext4_reserved_blocks")
copy_prop("system_squashfs_compressor", "squashfs_compressor")
copy_prop("system_squashfs_compressor_opt", "squashfs_compressor_opt")
elif mount_point == "data":
@ -406,10 +442,12 @@ def ImagePropFromGlobalDict(glob_dict, mount_point):
copy_prop("vendor_size", "partition_size")
copy_prop("vendor_journal_size", "journal_size")
copy_prop("vendor_verity_block_device", "verity_block_device")
copy_prop("has_ext4_reserved_blocks", "has_ext4_reserved_blocks")
elif mount_point == "oem":
copy_prop("fs_type", "fs_type")
copy_prop("oem_size", "partition_size")
copy_prop("oem_journal_size", "journal_size")
copy_prop("has_ext4_reserved_blocks", "has_ext4_reserved_blocks")
return d
@ -439,7 +477,8 @@ def main(argv):
glob_dict = LoadGlobalDict(glob_dict_file)
if "mount_point" in glob_dict:
# The caller knows the mount point and provides a dictionay needed by BuildImage().
# The caller knows the mount point and provides a dictionay needed by
# BuildImage().
image_properties = glob_dict
else:
image_filename = os.path.basename(out_file)