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To: Matthew Wakeling <matthew@flymine.org>
Cc: "pgsql-performance\@postgresql.org" <pgsql-performance@postgresql.org>
Subject: Re: which ext3 fs type should I use for postgresql
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From: Guillaume Cottenceau <gc@mnc.ch>
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Date: Thu, 15 May 2008 17:32:37 +0200
In-Reply-To: <Pine.LNX.4.64.0805151618520.16756@aragorn.flymine.org> (Matthew
	Wakeling's message of "Thu\,
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Matthew Wakeling <matthew 'at' flymine.org> writes:

> On Thu, 15 May 2008, Guillaume Cottenceau wrote:
>> Also, IIRC when PG writes data up to a full filesystem,
>> postmaster won't be able to then restart if the filesystem is
>> still full (it needs some free disk space for its startup).
>>
>> Or maybe this has been fixed in recent versions?
>
> Ah, the "not enough space to delete file, delete some files and try
> again" problem. Anyway, that isn't relevant to the reserved
> percentage, as that will happen whether or not the filesystem is 5%
> smaller.

It is still relevant, as with 5% margin, you can afford changing
that to 0% with tune2fs, just the time for you to start PG and
remove some data by SQL, then shutdown and set the margin to 5%
again.

-- 
Guillaume Cottenceau