For starters I know the lack of if / else if in the co is a little ugly but smashing into 80cols was uglier... Here are the changes in log size for various filesystem geometries (differing block sizes and filesystem sizes, with and without stripe geometry to increase AG count). "--" means mkfs failed. Blocksize: 4096 | orig | new size | log striped | log striped ------------------------------------------------------- 128m | 5m m | 5m m 256m | 5m 18m | 5m 18m 511m | 5m 18m | 5m 18m 512m | 5m 18m | 64m 18m 513m | 5m 18m | 64m 64m 1024m | 10m 18m | 64m 64m 2047m | 10m 18m | 64m 64m 2048m | 10m 18m | 64m 64m 2049m | 10m 18m | 64m 64m 4g | 10m 20m | 64m 64m 8g | 10m 20m | 64m 64m 15g | 10m 20m | 64m 64m 16g | 10m 20m | 64m 64m 17g | 10m 20m | 64m 64m 32g | 16m 20m | 64m 64m 64g | 32m 32m | 64m 64m 256g | 128m 128m | 128m 128m 512g | 256m 256m | 256m 256m 1t | 512m 512m | 512m 512m 2t | 1024m 1024m | 1024m 1024m 4t | 2038m 2038m | 2038m 2038m 8t | 2038m 2038m | 2038m 2038m Blocksize: 1024 | orig | new size | log striped | log striped ------------------------------------------------------------------------------ 128m | 3m 15m | 3m 15m 256m | 3m 15m | 3m 15m 511m | 3m 15m | 3m 15m 512m | 3m 15m | 64m 15m 513m | 3m 15m | 64m 64m 1024m | 10m 15m | 64m 64m 2047m | 10m 16m | 64m 64m 2048m | 10m 16m | 64m 64m 2049m | 10m 16m | 64m 64m 4g | 10m 16m | 64m 64m 8g | 10m 16m | 64m 64m 15g | 10m 16m | 64m 64m 16g | 10m 16m | 64m 64m 17g | 10m 16m | 64m 64m 32g | 16m 16m | 64m 64m 64g | 32m 32m | 64m 64m 256g | 128m 128m | 128m 128m 512g | 256m 256m | 256m 256m 1t | 512m 512m | 512m 512m 2t | 1024m 1024m | 1024m 1024m 4t | 1024m 1024m | 1024m 1024m 8t | 1024m 1024m | 1024m 1024m Blocksize: 65536 | orig | new size | log striped | log striped ------------------------------------------------------------------------------ 128m | -- -- | -- -- 256m | 32m -- | 32m -- 511m | 32m 32m | 32m 32m 512m | 32m 32m | 64m 32m 513m | 32m 32m | 64m 63m 1024m | 32m 32m | 64m 64m 2047m | 56m 45m | 64m 64m 2048m | 56m 45m | 64m 64m 2049m | 56m 45m | 64m 64m 4g | 56m 69m | 64m 69m 8g | 56m 69m | 64m 69m 15g | 56m 69m | 64m 69m 16g | 56m 69m | 64m 69m 17g | 56m 69m | 64m 69m 32g | 56m 69m | 64m 69m 64g | 56m 69m | 64m 69m 256g | 128m 128m | 128m 128m 512g | 256m 256m | 256m 256m 1t | 512m 512m | 512m 512m 2t | 1024m 1024m | 1024m 1024m 4t | 2038m 2038m | 2038m 2038m 8t | 2038m 2038m | 2038m 2038m
