On Thu, Nov 16, 2017 at 02:49:43PM +0300, Dogukan Ergun wrote:
> Docker's aufs filesystem doesn't support file ioctl operations like FIGETBSZ
> or FIEMAP.
> Sparse_copy operation will fail if those ioctls are not supported.
> If sparse_copy fails while generating wic images, fallback to dd for copying
> filesystems on final image.
>
You can make sparse_copy to use SEEK_HOLE / SEEK_DATA instead of FIEMAP.
This can be done by using 'api' parameter. If AUFS supports it this
there is no need to fall back to using dd.
> Signed-off-by: Dogukan Ergun <dogukan.er...@gmail.com>
> ---
> scripts/lib/wic/plugins/imager/direct.py | 10 ++++++++--
> 1 file changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/scripts/lib/wic/plugins/imager/direct.py
> b/scripts/lib/wic/plugins/imager/direct.py
> index da1c061..70f93ee 100644
> --- a/scripts/lib/wic/plugins/imager/direct.py
> +++ b/scripts/lib/wic/plugins/imager/direct.py
> @@ -577,8 +577,14 @@ class PartitionedImage():
> for part in self.partitions:
> source = part.source_file
> if source:
> - # install source_file contents into a partition
> - sparse_copy(source, self.path, seek=part.start *
> self.sector_size)
> + try:
> + # install source_file contents into a partition
> + sparse_copy(source, self.path, seek=part.start *
> self.sector_size)
> + except:
sparse_copy raises ErrorNotSupp if some ioctl is not supported. Please,
catch this particular exception instead of any exception.
> + # Sparse_copy failed, fallback to dd method
> + dd_cmd = "dd if=%s of=%s bs=%d seek=%d count=%d
> conv=notrunc" % \
> + (source, self.path, self.sector_size, part.start,
> part.size_sec)
> + exec_cmd(dd_cmd)
>
> logger.debug("Installed %s in partition %d, sectors %d-%d, "
> "size %d sectors", source, part.num, part.start,
> --
> 2.7.4
>
> --
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> Openembedded-core@lists.openembedded.org
> http://lists.openembedded.org/mailman/listinfo/openembedded-core
--
--
Regards,
Ed
--
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