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Thread: pg_clog after crash

pg_clog after crash

From
Andreas Schmitz
Date:
Hello *,

after a harddisk filling up to a 100% the database crashed. This is the output
I get when I try to start the DB again. Is there any chance to get it back
running without using a dump ?


regards,

-Andreas



2004-06-11 13:38:23 [22379] LOG:  database system was interrupted while in
recovery at 2004-06-11 13:32:44 CEST
HINT:  This probably means that some data is corrupted and you will have to
use the last backup for recovery.
2004-06-11 13:38:23 [22379] LOG:  checkpoint record is at 25/FB90EFA4
2004-06-11 13:38:23 [22379] LOG:  redo record is at 25/FB90ED88; undo record
is at 0/0; shutdown FALSE
2004-06-11 13:38:23 [22379] LOG:  next transaction ID: 10185227; next OID:
17088234
2004-06-11 13:38:23 [22379] LOG:  database system was not properly shut down;
automatic recovery in progress
2004-06-11 13:38:23 [22379] LOG:  redo starts at 25/FB90ED88
2004-06-11 13:38:24 [22379] PANIC:  could not access status of transaction
10256385
DETAIL:  could not read from file "/var/data/pgsql/data/dbs_1/pg_clog/0009" at
offset 204800: Success
2004-06-11 13:38:24 [22373] LOG:  startup process (PID 22379) was terminated
by signal 6
2004-06-11 13:38:24 [22373] LOG:  aborting startup due to startup process
failure

Re: pg_clog after crash

From
Tom Lane
Date:
Andreas Schmitz <a.schmitz@cityweb.de> writes:
> after a harddisk filling up to a 100% the database crashed. This is
> the output I get when I try to start the DB again. Is there any chance
> to get it back running without using a dump ?

What PG version is this?

            regards, tom lane

Re: pg_clog after crash

From
Andreas Schmitz
Date:
Hi Tom,

PostgreSQL 7.4.1 is used in this case. I was able to fix the clog by

dd if=/dev/zero bs=8k count=1 >><CLOG_FILE


regards,

-andreas

On Friday 11 June 2004 20:01, Tom Lane wrote:
> Andreas Schmitz <a.schmitz@cityweb.de> writes:
> > after a harddisk filling up to a 100% the database crashed. This is
> > the output I get when I try to start the DB again. Is there any chance
> > to get it back running without using a dump ?
>
> What PG version is this?
>
>             regards, tom lane
>
> ---------------------------(end of broadcast)---------------------------
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--
Andreas Schmitz - Phone +49 201 8501 318
Cityweb-Technik-Service-Gesellschaft mbH
Friedrichstr. 12 - Fax +49 201 8501 104
45128 Essen - email a.schmitz@cityweb.de

Re: pg_clog after crash

From
Tom Lane
Date:
Andreas Schmitz <a.schmitz@cityweb.de> writes:
>> What PG version is this?

> PostgreSQL 7.4.1 is used in this case.

Now that I look at it, your report matches Chris K-L's trouble
http://archives.postgresql.org/pgsql-hackers/2004-01/msg00530.php
which is fixed in 7.4.2.

            regards, tom lane