Re: how to recover after harddisk error

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От Tom Lane
Тема Re: how to recover after harddisk error
Дата
Msg-id 29766.1046274103@sss.pgh.pa.us
обсуждение исходный текст
Ответ на how to recover after harddisk error  ("Peter Alberer" <h9351252@obelix.wu-wien.ac.at>)
Ответы Re: how to recover after harddisk error
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"Peter Alberer" <h9351252@obelix.wu-wien.ac.at> writes:
> 2003-02-26 09:03:06 [1291]   DEBUG:  open of
> /usr/local/pgsql/data/pg_xlog/0000001A000000C9 (log file 26, segment
> 201) failed
> : No such file or directory
> 2003-02-26 09:03:06 [1291]   DEBUG:  invalid primary checkpoint record
> 2003-02-26 09:03:06 [1291]   DEBUG:  open of
> /usr/local/pgsql/data/pg_xlog/0000001A000000C8 (log file 26, segment
> 200) failed
> : No such file or directory
> 2003-02-26 09:03:06 [1291]   DEBUG:  invalid secondary checkpoint record
> 2003-02-26 09:03:06 [1291]   FATAL 2:  unable to locate a valid
> checkpoint record

Assuming you haven't wiped the old database directory yet...

What file name(s) are actually present in /usr/local/pgsql/data/pg_xlog/
?  What does pg_controldata show --- do the other fields of pg_control
look sane?

pg_resetxlog would have allowed you to restart, but at the price of
losing any consistency guarantees about the results of
recently-committed transactions.  So I consider it a very last resort.
What I'd like to understand first is why the system couldn't restart
normally.

            regards, tom lane

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