While playing with Netapp simulator, I checked the minimum size which can be used to create the volume.
Step 1 : Tried to create new volume with name nfsstore1 on aggr0 with size of 10MB. It throws the error because the minimum size is 20MB.
filer1*> vol create nfsstore1 aggr0 10M
vol create: Volume size is too small; minimum is 20m
Step 2 : Tried the same command with minimum size which we got in the error message in previous step. As expected volume is successfully created.
filer1*> vol create nfsstore1 aggr0 20M
Fri Jul 31 12:47:45 GMT [filer1:wafl.vol.runningOutOfInodes:warning]: The file system on Volume nfsstore1 is using 80 percent or more of the files that can be contained on the volume.
Creation of volume ‘nfsstore1’ with size 20m on containing aggregate
‘aggr0’ has completed.