I'm running a PostgreSQL 8.1.9 server on Debian etch (default installation, w/ PostGIS from Debian repositories). The machine has double Xeon 5130, 4 GB of DDR2 ECC Reg. RAM and a two-sata-disc Raid 0 cluster. I don't know the brand of the memory nor the HDDs. The Riad controller is a 3Ware 8006-2.
Lately i've been confronted by some failures in several PostgreSQL clusters. 3 weeks ago a cluster crashed when i was reindexing it, beond my repair. Last week we've been getting Toast warnings and shared index problems on another cluster. I solved the shared index issue, but the Toast trouble remained, in more than one database on that cluster. I dumped the databases, created another cluster and shut the troubled one down. (problems were solved). I've asked our provider to do a filesystem check, (e2fsck -f /dev/sda1) which indicated that "there's nothing wrong with the filesystem".
This doesn't feel right. Is there anything else i should check?