GPFS 3.5 introduced a blocksize parameter associated with a storage pool. I believe that this parameter is most often used with either GPFS native RAID and/or the new GPFS File Placement Optimizer (FPO)
However, the GPFS manual text on "mmadddisk" does NOT restrict the use of the blocksize parameter within the pool stanza entry. The pool-level blocksize parameter also does NOT have the specific size restrictions that qualify the GPFS-level maximum blocksize parameter, or the specific size restrictions of the file system-level data block size and metadata blocksize
If you are using traditional GPFS, without native RAID, and without FPO, can you use a separate(different) storage pool-level blocksize, along with a file system-specific data blocksize and metadata blocksize?
If my file system data block size is 8MB, but the storage pool block size is 2MB, what happens?
If my file system data block size is 1MB, but the storage pool block size is 8 MB, what happens?