Brian Neu <proclivity76@yahoo.com> writes:
> PANIC: could not open file "pg_xlog/000000010000000100000023" (log file 1,
> segment 35): Invalid argument
We've seen this before --- the cause seems to be having wal_sync_method
set to open_sync or open_datasync when the filesystem doesn't actually
accept those open() options. I gather you're running Fedora 13, but
what kind of filesystem is pg_xlog on?
regards, tom lane