Yesterday I identified the following messages in my log file (slave):
user=,db= WARNING: page 6629 of relation base/20449/24818 is uninitialized user=,db= CONTEXT: xlog redo vacuum: rel 1663/20449/24818; blk 6631, lastBlockVacuumed 6626 user=,db= PANIC: WAL contains references to invalid pages user=,db= CONTEXT: xlog redo vacuum: rel 1663/20449/24818; blk 6631, lastBlockVacuumed 6626 user=,db= LOG: startup process (PID 26293) was terminated by signal 6: Aborted user=,db= LOG: terminating any other active server processes
Information:
PostgreSQL 9.2.3 (master and slave) Operational System: CentOS release 6.3 (Final) The parameter full_page_writes is enabled in both servers.
Analyzing the objects in my cluster (master) I identified the database [20449] and the relation [24818]. The relation 24818 is an index, so I ran the command REINDEX to try solving the problem. Immediately after, I tried to up the slave but I received the same errors.
user=,db= WARNING: page 6629 of relation base/20449/24818 is uninitialized user=,db= CONTEXT: xlog redo vacuum: rel 1663/20449/24818; blk 6631, lastBlockVacuumed 6626 user=,db= PANIC: WAL contains references to invalid pages user=,db= CONTEXT: xlog redo vacuum: rel 1663/20449/24818; blk 6631, lastBlockVacuumed 6626 user=,db= LOG: startup process (PID 26293) was terminated by signal 6: Aborted user=,db= LOG: terminating any other active server processes
As the problem is in the wal file, so the process (above) doesn't work according my wish.
Any idea?
Hi JotaComm,
IMHO as it is your slave you could just rebuild it.
However if you want to make an attempt to recover you can do:
1) make a physical backup of this cluster
2) in your postgresql.conf set 'zero_damaged_pages = on' [1]
3) start your cluster
I really don't know if it will work, but you can try... :-)
Thanks for your suggestion :)
I tried it and I had the same errors. I believe that will be necessary to rebuild the cluster, because the problem is in the wal file.
