Block size per export
The block size can be configured per export.
In the exportd config file the bsize parameter tells the block size
exports = (
   {eid = 1; bsize = 0;root = "/home/jean-pierre/rozoClients/mdev/tests/export_1"; md5=""; squota=""; hquota=""; vid=1;},
   {eid = 2; bsize = 1;root = "/home/jean-pierre/rozoClients/mdev/tests/export_2"; md5=""; squota=""; hquota=""; vid=1;},
   {eid = 3; bsize = 2;root = "/home/jean-pierre/rozoClients/mdev/tests/export_3"; md5=""; squota=""; hquota=""; vid=1;},
   {eid = 4; bsize = 3; root = "/home/jean-pierre/rozoClients/mdev/tests/export_4"; md5=""; squota=""; hquota=""; vid=1;}
);

0 is  4K
1 is  8K
2 is 16K
3 is 32K