[PVE-User] Ceph Cache Tiering

Lindsay Mathieson lindsay.mathieson at gmail.com
Tue Oct 11 13:21:27 CEST 2016

On 11/10/2016 6:39 PM, Eneko Lacunza wrote:
> I linked the bugreport, not that I care really :)

If you read through the bug report it turns out to be:

a). an xattr issue, not filename size

b). A bug in ceph which assumes that the zfs max xattr size is far 
smaller than it is.

> They're not developing a new filesystem (that is the point after all),

I meant the disk control layer, not the filesystem. And it removes all 
ability to uses anything but raw disks.

> and yes, it performs much better.

Last I saw they were have big regression issues with various IO sizes. 
Its a long way off.

Lindsay Mathieson

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