The following bug has been logged online:
Bug reference: 5947
Logged by: Raman Sharma
Email address: rsharma@10kinfo.com
PostgreSQL version: 7.4
Operating system: Ubnato
Description: Error while running query
Details:
ERROR: could not extend relation "test_table": No space left on device
HINT: Check free disk space.
But i have 27 GB space in my disk where it loaded and running query