Re: [HACKERS] Recovery on incomplete write

From: Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Hiroshi Inoue <Inoue(at)tpf(dot)co(dot)jp>, pgsql-hackers <pgsql-hackers(at)postgreSQL(dot)org>
Subject: Re: [HACKERS] Recovery on incomplete write
Date: 1999-09-28 14:54:26
Message-ID: 199909281454.KAA18708@candle.pha.pa.us
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> "Hiroshi Inoue" <Inoue(at)tpf(dot)co(dot)jp> writes:
> > I have wondered that md.c handles incomplete block(page)s
> > correctly.
> > Am I mistaken ?
>
> I think you are right, and there may be some other trouble spots in that
> file too. I remember thinking that the code depended heavily on never
> having a partial block at the end of the file.
>
> But is it worth fixing? The only way I can see for the file length
> to become funny is if we run out of disk space part way through writing
> a page, which seems unlikely...
>

That is how he got started, the TODO item about running out of disk
space causing corrupted databases. I think it needs a fix, if we can.

--
Bruce Momjian | http://www.op.net/~candle
maillist(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
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