add progress indicator to btrfs-convert

Hi btrfs-ml,

I have tried a ext4->btrfs conversation of a 1TB (90%full) and have seen that btrfs has no progressbar or something like that. Furthermore I have found [1] a project idea for this.

I have tried a generic tasklet-based solution to print the status of the convert-process. Maybe it looks good to you than please add this to your repo. I have implemented this with the linux specific timerfd facility. To enable this you haver to use the '-p' option.

I have noticed that a conversation doesn't show all inodes as converted at the end. How can I improve this? A complete convert-process is showd here:

sfr@devhost ./btrfs-progs % ./btrfs-convert -p /dev/sde4 creating btrfs metadata.
copy inodes [o] [ 96/ 106]
creating ext2fs image file.
cleaning up system chunk.
conversion complete.

[1] https://btrfs.wiki.kernel.org/index.php/Project_ideas#btrfs-convert

Bye and thanks,
Silvio

Silvio Fricke (2):
btrfs-progs: add task-utils
btrfs-progs: convert: use task for progress indication of metadata
creation

 Documentation/btrfs-convert.txt |   2 +
 Makefile                        |   6 +--
 btrfs-convert.c                 |  60 ++++++++++++++++++++++--
 task-util.c                     | 101 ++++++++++++++++++++++++++++++++++++++++
 task-util.h                     |  32 +++++++++++++
 5 files changed, 193 insertions(+), 8 deletions(-)
 create mode 100644 task-util.c
 create mode 100644 task-util.h

2.1.2