[linux-lvm] What todo if metadata grows faster than pool data

[Mike Snitzer]

On Fri, Oct 24 2014 at 10:08am -0400,
Oliver Rath <rath at mglug.de> wrote:

> Hi list,
> 
> in my thinpool-volume the used data is now 50% but the used metadata
> size is 82%. What happens, if the metadata a running full, bevor data is
> full? Do I have to modify metadata size explicitly or does lvm this
> automaticly? How can I do this?

You'll want to grow the metadata volume.  Newer versions of the
dm-thinp kernel code and lvm2 userspace code make this possible.

See the "Manually manage free metadata space of a thin pool LV" section
of the lvmthin.7 manpage in a recent lvm2 release.