Re: Ideas for btrfs-convert fix(or rework)

[Roman Mamedov <rm@romanrm.net>]

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On Tue, 10 Nov 2015 14:27:41 +0800
Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:

>     But without such work, btrfs-convert will always be a mess and no
>     real support for balance.

I wonder, what happened to the current btrfs-convert?

Perhaps a couple of years ago I converted a 7TB and ~70% full Ext4 filesystem
into Btrfs. At first the result showed up to have about 3TB of Metadata
chunks, but several iterations of balance reclassified this as Data (and thus
made it practical to also enable Metadata DUP). Everything went flawlessly and
with no data loss whatsoever.

But as we know recently there were reports that it now causes corruption or
does not work. So I wonder what happened that broke it, and is there really no
simpler fix? Even if requiring the user to balance to get rid of the bloated
Metadata like I had to.

-- 
With respect,
Roman

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