2011-07-20 08:54 AM
Just wondering if there is any documentation surrounding any best practices for qtree to volume ratios, and if there is a performance issue with having multiple qtrees within a volume, each of which having millions of files within subdirectories??
The platform in question is a 3210
Sorry if this sounds a bit dumb!
2011-07-28 12:59 PM
I'll leave it to others to answer the best practices question. It looks like the maximum number of Qtrees for your controller is 4,995, which is probably alot more than you have! But I have a good suggestion for you if you want to monitor a particular volume you are concerned about. You'll need the Netapp Powershell Toolkit, connect to your filer with
PS C:\Users\me> Import-Module DataOntap
PS C:\Users\me> Connect-NaController mybox -Credential root
PS C:\Users\me> Invoke-NaSysstat -Volume vol0 -Count 2
Read Written RdOps WrOps TotOps RdLat WrLat TotLat Volume
---- ------- ----- ----- ------ ----- ----- ------ ------
0 9 KB 0 9 179 0.0 0.1 0.0 vol0
0 11 KB 0 11 266 0.0 0.1 0.0 vol0
As you can see you'll get detailed performance information at the volume level. This is not available with a standard systat command.
From the Powershell toolkit man page:
"Unlike sysstat, Invoke-NaSysstat supports not only top-level controller metrics but also performance values for other object classes such as volumes, vfilers, LUNs, network interfaces, storage adapters, individual data protocols, and WAFL."
Pretty cool stuff IMHO.