No Space Left On Device

hi There,

When I was fine tuning my already running application, all of the sudden, I couldn't perform any save/edit operation on my database, with the error such as:

ERROR: could not extend relation 4273000/17231/926549: No space left on device SQL = update call set personal=1 where rowid=8735

I tried to update/insert several other tables but the more or less the same message appear.

I should have more than enough disk space on my system:

$ dfspace
/ : Disk space: 15775.57 MB of 21868.99 MB available (72.14%)
/stand : Disk space: 34.51 MB of 39.99 MB available (86.28%)
/home : Disk space: 13258.27 MB of 15000.00 MB available (88.39%)
/tmp : Disk space: 1023.92 MB of 1024.00 MB available (99.99%)
/var/tmp : Disk space: 1023.92 MB of 1024.00 MB available (99.99%)

where my postgres DB is on "/". and the strange thing is, the databas have been running fine for about 4 months.

can any one help please?

Thanks a lot.

Lim