[Libguestfs] [PATCH nbdkit] log: Decode the extent type in output.

[Eric Blake]

On 4/1/19 6:53 AM, Richard W.M. Jones wrote:
> Instead of printing something like ‘type=0’ or ‘type=3’, this changes
> the output to show the hole and zero flags separately.  For example:
> 
>   $ ./nbdkit -U - --filter=log sh - logfile=/dev/stdout \
>       --run 'qemu-img map $nbd' <<'EOF'
>   case "$1" in
>      get_size) echo 1M ;;
>      pread) dd if=/dev/zero count=$3 iflag=count_bytes ;;
>      can_extents) exit 0 ;;
>      extents)
>          echo "0   32K    zero"
>          echo "32K 32K    hole,zero"
>          echo "64K 983040 "
>          ;;
>      *) exit 2 ;;
>   esac
>   EOF
>   [...]
>   2019-04-01 11:49:40.818357 connection=1 Extents id=2 offset=0x0 count=0x100000 req_one=1 ...
>   2019-04-01 11:49:40.819848 connection=1 ...Extents id=2 extents=[{ offset=0x0, length=0x8000, hole=0, zero=1 }, { offset=0x8000, length=0x8000, hole=1, zero=1 }, { offset=0x10000, length=0xf0000, hole=0, zero=0 }] return=0
> 
> Updates commit ed868b00f192cd72e91265e4fcdf3c3fbe8b7613.

Yes, that's nicer.

> 
> Thanks: Martin Kletzander
> ---
>  filters/log/log.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)


-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org

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