Christian Sengstock <csengstock@gmail.com> writes:
> to save the database on a filesystem basis i stopped the postgres server and
> tried to tar the entire pgdata directory. this process stopped with a
> "segmentation fault" during the tar process.
So there's something wrong beyond just postgres ...
> the server is running, and i can connect with another psql client, but the
> drop table process is still present. ps aux shows
> postgres 5548 0.0 0.8 16420 4548 ? D 07:58 0:00 postgres: postgres
> wlan [local] DROP TABLE
> i cannot kill it with kill -9, and also i'm not sure if i should. maybe the
> database is not running after it at all?
A process stuck in an unkillable disk wait is a pretty common symptom of
low-level problems. There might be a disk hardware issue --- have you
looked into the kernel message log on the machine?
regards, tom lane