Re: [PATCH] Btrfs-progs: use btrfs-debugfs to fetch block group information

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On Wed, Mar 16, 2016 at 08:59:26PM -0700, Liu Bo wrote:
> On Wed, Mar 16, 2016 at 10:36:49AM +0100, David Sterba wrote:
> > On Mon, Jan 11, 2016 at 12:10:22PM -0800, Liu Bo wrote:
> > > This aims to decide whether a balance can reduce the number of
> > > data block groups and if it is, this shows the '-dvrange' block
> > > group's objectid.
> > Applied. I consider btrfs-debugfs as a debugging utility only, without
> > guarantees of a stable output or commandline arugments.
> Yeah, one thing about this is that the debugfs is using
> btrfs_ioctl_search_args_v2, which may not be supported in old kernels,
> so it cannot be used before backporting struct
> btrfs_ioctl_search_args_v2, do we need to change it to
> btrfs_ioctl_search_args_v1?

V2 is available since 3.16, I don't think we need to update it to v1,
but would be nice of course.
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