On 2021/8/18 上午8:38, Sidong Yang wrote:

On Tue, Aug 17, 2021 at 03:30:22PM +0200, David Sterba wrote:

quoted

On Sun, Jul 18, 2021 at 06:46:01AM +0000, Sidong Yang wrote:

quoted

This patch adds an subcommand in inspect-internal. It dumps file extents of
the file that user provided. It helps to show the internal information
about file extents comprise the file.

Do you have an example of the output? That's the most interesting part.
Thanks.

Thanks for reply.
This is an example of the output below.

# ./btrfs inspect-internal dump-file-extent /mnt/test1
type = regular, start = 2097152, len = 3227648, disk_bytenr = 0, disk_num_bytes = 0, offset = 0, compression = none
type = regular, start = 5324800, len = 16728064, disk_bytenr = 0, disk_num_bytes = 0, offset = 0, compression = none
type = regular, start = 22052864, len = 8486912, disk_bytenr = 0, disk_num_bytes = 0, offset = 0, compression = none
type = regular, start = 30572544, len = 36540416, disk_bytenr = 0, disk_num_bytes = 0, offset = 0, compression = none
type = regular, start = 67112960, len = 5299630080, disk_bytenr = 0, disk_num_bytes = 0, offset = 0, compression = none

Could you give an example which includes both real (non-hole) extents
and real extents (better to include regular, compressed, preallocated
and inline).

Currently the output only contains holes, and for holes, a lot of
members makes no sense, like disk_bytenr/disk_num_bytes/offset (even it
can be non-zero) and compression.

Thanks,
Qu

Thanks,
Sidong