On Mon, 2014-12-22 at 15:26 -0800, Craig Lewis wrote: > My problems were memory pressure plus an XFS bug, so it took a while > to manifest.
The following (long, ongoing) thread on linux-mm discusses our [severe] problems with memory pressure taking out entire OSD servers. The upstream problems are still unresolved as at Linux 3.18, but anyone running Ceph on XFS over especially Infiniband or *anything* that does custom allocation in the kernel should probably be aware of this. http://marc.info/?l=linux-mm&m=141605213522925&w=2 AfC Sydney -- Andrew Frederick Cowie Head of Engineering Anchor Systems afcowie anchor hosting
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