| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | "scott(dot)marlowe" <scott(dot)marlowe(at)ihs(dot)com> |
| Cc: | Greg Stark <gsstark(at)mit(dot)edu>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: pg_ctl reload - is it safe? |
| Date: | 2003-10-14 20:02:48 |
| Message-ID: | 200310142002.h9EK2m725847@candle.pha.pa.us |
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| Lists: | pgsql-hackers |
wscott.marlowe wrote:
> > If you use "intr" then this type of thing can happen. Lots of programs assume
> > the unix semantics for disk accesses. You can get all kinds of bugs when
> > they're violated.
> >
> > If you use "soft" then the consequences can be much much worse. If your
> > fileserver were to reboot you could silently lose disk writes corrupting your
> > database.
>
> What if the WAL was local on disk, and the data was going to nfs storage,
> would that be safe, or saferer? :-)
Not sure --- we do a sync() on the entire machine before recycling the WAL logs.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
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