[OE-core] [PATCH 0/4] replace genext2fs with populate-extfs.sh
Robert Yang
liezhi.yang at windriver.com
Wed May 8 01:49:09 UTC 2013
Hi Darren,
No, I haven't sent them to the ext mailing list, can we merge them in
oe-core and then back port to the ext community ? Or I should send them
to the ext mailing list first ?
// Robert
On 05/08/2013 06:48 AM, Darren Hart wrote:
> Have these been reviewed on the ext mailing list already?
>
> --
> Darren
>
> On 05/07/2013 02:48 AM, Robert Yang wrote:
>> * The benefits:
>> - Really support ext4
>> - Support the sparse file (the sparse file became into the common file before)
>> - Have a uniform code for ext2/3/4 generation
>> - Remove the depends on genext2fs-native
>>
>> * Impact
>> - Build time:
>> a) If we build fresh core-image-sato, there is nearly no impact.
>> b) If we do the image generation, which means:
>> $ bitbake core-image-sato
>> $ bitbake core-image-sato -ccleansstate
>> $ bitbake core-image-sato
>> About 50 extra seconds are needed, here is my test result:
>> Before the patches: 4m25s
>> After the patches: 5m17s
>> This is because the genext2fs is much faster than the
>> populate-extfs.sh, we will replace this script by the mke2fs when it
>> supports create the filesystem from a initial directory.
>>
>> - Disk space (take core-image-sato as an example)
>> a) The image file size is the same as before (529M)
>> b) The disk usage is a little different: (du -sh)
>> before now
>> ext2: 364M 388M
>> ext3: 381M 404M
>> ext4: 380M 387M
>>
>> We may need to adjust the IMAGE_OVERHEAD_FACTOR from 1.3 to 1.4.
>>
>> I have done some simple runtime testing on core-image-sato and
>> core-image-minimal, they worked well.
>>
>> // Robert
>>
>> The following changes since commit 3472c1f7ab409cd91c1d4782d9e00880b84e3ae8:
>>
>> grub-efi-native: Cleanup whitespace (2013-05-03 16:37:05 +0100)
>>
>> are available in the git repository at:
>>
>> git://git.pokylinux.org/poky-contrib robert/ext4
>> http://git.pokylinux.org/cgit.cgi/poky-contrib/log/?h=robert/ext4
>>
>> Robert Yang (4):
>> e2fsprogs: the max length of debugfs argument is too short
>> e2fsprogs: let debugfs do sparse copy
>> e2fsprogs: add populate-extfs.sh
>> image_types.bbclass: replace genext2fs with populate-extfs.sh
>>
>> meta/classes/image_types.bbclass | 46 ++++----
>> .../e2fsprogs-1.42.7/debugfs-too-short.patch | 28 +++++
>> .../e2fsprogs/e2fsprogs-1.42.7/populate-extfs.sh | 93 ++++++++++++++++
>> .../e2fsprogs/e2fsprogs-1.42.7/sparse_copy.patch | 114 ++++++++++++++++++++
>> .../recipes-devtools/e2fsprogs/e2fsprogs_1.42.7.bb | 4 +
>> 5 files changed, 257 insertions(+), 28 deletions(-)
>> create mode 100644 meta/recipes-devtools/e2fsprogs/e2fsprogs-1.42.7/debugfs-too-short.patch
>> create mode 100644 meta/recipes-devtools/e2fsprogs/e2fsprogs-1.42.7/populate-extfs.sh
>> create mode 100644 meta/recipes-devtools/e2fsprogs/e2fsprogs-1.42.7/sparse_copy.patch
>>
>
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