On Sat, Jun 9, 2018 at 7:41 AM, John Stoffel <john@stoffel.org> wrote:

Mike> In Ontap 8, we used to route this message to a group of
Mike> operators, who would move volumes around when aggregates started
Mike> getting full.

I assume you got this message from trolling the message log?  

 yeah, that message has been around since the GX days I believe.  sucks that it's gone in Ontap 9.

Mike> I don't see the associated message in the Ontap 9 message
Mike> catalog, or anything that looks similar.  

I'd probably just script something out that does a show aggr and then
parses the numbers and alerts on them.  'dashboard storage show' might
also be something to look at, but much harder to parse and work with.

yeah looks like will have to hack something together, would be great if the filer could tell you when it's running low on space though, seems like a pretty fundamental metric to be able to alert on.

 

Do you run with a bunch of small aggregates, or much fewer, larger
aggregates?  I personally like monster aggregates, so I don't have to
move volumes very often if at all.

we thin provision all of our volumes, as it's difficult to forecast which ones will get large, and we don't want to have a lot of empty disk space wasted.  

this means that aggregate used is fairly constantly rising, so once an aggr gets around 90% full, we start looking to vol move stuff elsewhere.

 

But I do have some smaller dedicated aggregates for some Oracle DBs
which need the dedicated IOPs.  This is still on a 7-mode 8.x system
which is running out of steam...

John