I have had an SSIS package bomb twice in the last week after running without issue for a good month. It's running on 2008R2 Enterprise 64 bit.
Description: The buffer manager cannot write 8 bytes to file "C:\Users\username\AppData\Local\Temp\DTS{F4023B85-312C-4D4B-9132-F39799D93452}.tmp". There was insufficient disk space or quota.
This is a very small job. It grabs 100,000 rows from a small table (takes about 2 seconds in management studio), uses the Aggregate data transformation to perform a group by, then outputs the result to a flat CSV file. Very simple. It has been running without issue for a month.
The C:\ drive that it claims is filling up has 270 GB free. We have Nagios monitoring on that system as well, and any time the drive has ever dipped below 10% free space, we immediately get flooded with alerts. We've received nothing about space issues. The account running SQL Server and the SQL Agent is a sysadmin in SQL, as well as an administrator on the server.
Googling this issue has not produced anything helpful. I can't understand why this tiny little job would possibly throw this error. Has anyone seen this before?