Quota

GPFS supports user quota. When dm_punch_hole is invoked, the file owner's quota is adjusted by the disk space that is freed. The quota is also adjusted when dm_write_invis is invoked and additional disk space is consumed.

Since dm_write_invis runs with root credentials, it will never fail due to insufficient quota. However, it is possible that the quota of the file owner will be exceeded as a result of the invisible write. In that case the owner will not be able to perform further file operations that consume quota.