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Re: Corrupted index, what do i do?ruc

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On 12/01/2012 9:08 PM, eshishki wrote:
14:01:59 MSK,,0,FATAL,XX002,"index ""1339592"" contains unexpected
zero page at block 328134",,"Please REINDEX it.",,,,,,,""
2012-01-12 14:02:00.042 MSK,,,5642,,4f0eaf97.160a,1,,2012-01-12
14:01:59 MSK,,0,LOG,00000,"startup process (PID 5644) exited with exit
code 1",,,,,,,,,""
2012-01-12 14:02:00.042 MSK,,,5642,,4f0eaf97.160a,2,,2012-01-12
14:01:59 MSK,,0,LOG,00000,"aborting startup due to startup process
failure",,,,,,,,,""

My question is corrupted index, not transaction rollbacks.
How can i rebuild index if db aint start?

Since you were running with fsync off, you must have had good backups or replication configured, because the documentation warns you that running with fsync=off will probably destroy your data and is only for expert users.

In case you don't have a current replica or backup: first, before you do ANYTHING ELSE follow the instructions here:

http://wiki.postgresql.org/wiki/Corruption

Now - **AFTER** following the instructions above - start the database in single user recovery mode. See:

http://www.postgresql.org/docs/current/static/app-postgres.html

where the "--single" command line argument for the "postgres" executable is documented.

Once you have a single user mode backend running you can REINDEX then shut the backend down, start back up in multi-user mode, and see if you have any luck.

I was running with fsync off, how postgresql behave about index
consistency with fsync on?
Indexes will always be consistent when fsync is on.

You were running in a mode that says "be fast even if you eat my data". It ate your data. If you don't tell it to, it won't.

--
Craig Ringer


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