Tom Lane wrote: > Scott Marlowe <smarlowe@xxxxxxxxxxxxxxxxx> writes: > >> Also, schedule some maintenance window for your server to run memtest86 >> and possibly something to check for bad blocks on your drives. >> > > +1 ... I have not seen any instance of "invalid page header" that could > be traced to a Postgres bug. The cases I've been able to study all > seemed to involve either flaky hardware or kernel-level bugs (such as > dumping a fragment of some unrelated file into a Postgres table :-() > > regards, tom lane > Since it sounds like this is either a hardware or a kernel issue, we're wondering if our downtime would be better spent rebooting to the standard FC6 kernel, or trying some of the aforementioned hardware tests... We are running a xen kernel: 2.6.18-1.2798.fc6xen and getting these kernel errors in our logs: Jan 7 18:51:23 ws116 kernel: SKB BUG: Invalid truesize (4012) len=16384, sizeof(sk_buff)=172 Jan 7 18:51:23 ws116 kernel: SKB BUG: Invalid truesize (4012) len=16384, sizeof(sk_buff)=172 Jan 9 08:52:12 ws116 kernel: SKB BUG: Invalid truesize (4012) len=16384, sizeof(sk_buff)=172 Jan 9 13:07:35 ws116 kernel: SKB BUG: Invalid truesize (4012) len=16384, sizeof(sk_buff)=172 (The memory alloc error first occured early in the morning on the 8th). Thanks, Jonathan
