Re: could not open relation...No such file or directory

On 12/22/2010 06:45 PM, Adrian Klaver wrote:

> On 12/22/2010 08:37 AM, Sim Zacks wrote:
>> On 12/22/2010 06:28 PM, Adrian Klaver wrote:
>>
>>> On 12/22/2010 07:59 AM, Sim Zacks wrote:
>>>> We are using postgresql 8.2.17 on Gentoo
>>>>
>>>> Our postgresql database stopped working with the error
>>>> ERROR: could not open relation 1663/26468499/26470404: No such file or
>>>> directory
>>>>
>>>> After one minute of these errors on every statement run we had what
>>>> looks like a memory failure:
>>>> Dec 22 16:37:44 localhost kernel: [279820.425911] postgres invoked
>>>> oom-killer: gfp_mask=0x280da, order=0, oom_adj=0
>>>> Dec 22 16:37:44 localhost kernel: [279820.425917] postgres cpuset=/
>>>> mems_allowed=0
>>>> Dec 22 16:37:44 localhost kernel: [279820.425922] Pid: 26209, comm:
>>>> postgres Not tainted 2.6.32-gentoo-r7 #12
>>>>
>>>> We cannot connect to the database using psql as it gives the could not
>>>> open relation error. We ran fsck and did not find any problems. I
>>>> searched through google and found suggestions such as reindex, but we
>>>> can't connect to the db. We also can't take a backup of the
>>>> database as
>>>> pg_dump gives the same error.
>>>
>>> Does the not connect also apply to starting postgres in single user
>>> mode?
>> Same error with single user mode.
>> postgres --single -D /var/lib/postgresql/8.2/data clstock
>> FATAL: could not open relation 1663/26468499/1259: No such file or
>> directory
>
> Well it is failing on a different relation. Is the FATAL message
> correct, are the relations shown in fact not on the file system?
Throughout the log, I noticed a bunch of different relations that are
missing.
It seems to me that they are not in the file system.
data/base/26468499 exists with a large number of files, but the ones it
mentions are not there.

>>
>>>
>>>>
>>>> This is our production database and crashed at the end of the day. If
>>>> possible, I would really not like to lose a full days work by
>>>> restoring
>>>> yesterdays backup.
>>>>
>>>> Thanks
>>>> Sim
>>>>
>>>
>>>
>>
>>
>
>