you can use vol read_fsid to find out which flexvol has that FSID
netapp01*> vol read_fsid customer01_oralogtemp
Volume 'customer01_oralogtemp' has an FSID of 0x17383d29.
Plus, you can have aligned VMs, but still have applications that generated non-aligned writes.
the example below is for an oracle database on NFS, all writes are aligned (it's NFS), but the writes to the redo logs can be for any size between 512b to ..... In this case, the writes can fall through a block boundary.
Files Causing Misaligned IO's
[Counter=0], Filename=customer01_sapbin/zone_test5_P01_oracle/P01/mirrlogB/log_g12m2.dbf
[Counter=44876], Filename=customer01_sapbin/zone_test5_P01_oracle/P01/origlogA/log_g11m1.dbf
[Counter=36977], Filename=customer01_sapbin/zone_test5_P01_oracle/P01/mirrlogA/log_g11m2.dbf[Counter=85835], Filename=customer01_sapbin/zone_test5_P01_oracle/P01/mirrlogB/log_g14m2.dbf
[Counter=100507], Filename=customer01_sapbin/zone_test5_P01_oracle/P01/origlogB/log_g14m1.dbf
[Counter=45690], Filename=customer01_sapbin/zone_test5_P01_oracle/P01/origlogB/log_g12m1.dbf
[Counter=102382], Filename=customer01_sapbin/zone_test5_P01_oracle/P01/origlogA/log_g13m1.dbf
[Counter=89142], Filename=customer01_sapbin/zone_test5_P01_oracle/P01/mirrlogA/log_g13m2.dbf
[Counter=38241], Filename=customer01_sapbin/zone_test5_P01_oracle/P01/mirrlogB/log_g12m2.dbf
[Counter=3373], Filename=customer01_sapbin/zone_test5_P01_oracle/P01/mirrlogA/log_g11m2.dbf
[Counter=3467], Filename=customer01_sapbin/zone_test5_P01_oracle/P01/origlogA/log_g11m1.dbf