[Gluster-users] ZFS, ZIL and ARC

Lindsay Mathieson lindsay.mathieson at gmail.com
Sun Oct 30 13:31:32 UTC 2016

On 30/10/2016 11:24 PM, Gandalf Corvotempesta wrote:
> I've added an ssd to a zpool to be used as zil and l2arc cache. (One 
> partition for each service)
> Seems to be unused. I've tried with arcstat.sh script and i don't see 
> any increasing usage for the cache
> How can i debug the zil/arc cache usage?

This is for VM Hosting? pretty normal. I've run l2arc for weeks with 
VM's on ZFS or gluster/zfs and only seen 4%-6% hit ratios. Between KVM 
caching and the zil, l2arc never gets a chance to shine.

Lindsay Mathieson

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