From: | "Scott Marlowe" <scott(dot)marlowe(at)gmail(dot)com> |
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To: | "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | gherzig(at)fmed(dot)uba(dot)ar, pgsql-sql(at)postgresql(dot)org |
Subject: | Re: trying to repair a bad header block |
Date: | 2008-10-30 01:24:10 |
Message-ID: | dcc563d10810291824p72817961ufeffc8bb2b66c242@mail.gmail.com |
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Lists: | pgsql-sql |
On Wed, Oct 29, 2008 at 6:36 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> "Scott Marlowe" <scott(dot)marlowe(at)gmail(dot)com> writes:
>> On Wed, Oct 29, 2008 at 4:23 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>>> If you can tolerate losing the data on that page, just zero out the
>>> entire 8K page. dd from /dev/zero is the usual tool.
>
>> Would zero_damaged_pages work here? I know it's a shotgun to kill a
>> flea, but it's also easier and safer for a lot of folks than dding a
>> page in their table.
>
> It would work, but if you have any *other* damaged pages you might
> lose more than you were expecting ...
Agreed. OTOH, on slip of the fingers for a newbie with dd and the
whole table is gone. I guess it's always a trade off.
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