Re: XFS reflinks

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On Tue, Aug 29, 2017 at 02:39:56PM +0100, Chris Cottam wrote:
> Could I enquire about the severity of a few issues?

The most recent ones were:

xfs: try to avoid blowing out the transaction reservation when bunmaping a shared extent

which is a case wher we blew a transaction under extreme unlink
loads, leading to a fs shutdown in those cases.

xfs: try any AG when allocating the first btree block when reflinking

again could lead to a shutdown

xfs: fix COW writeback race

this could lead to a kernel crash

xfs: only reclaim unwritten COW extents periodically

could lead to a kernel crash
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