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Date:      Tue, 21 Jun 2011 11:23:08 -0700
From:      Chuck Swiger <cswiger@mac.com>
To:        Lokadamus <lokadamus@gmx.de>
Cc:        Damien Fleuriot <ml@my.gd>, Traiano Welcome <Traiano.Welcome@mtnbusiness.co.za>, "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>
Subject:   Re: (no subject)
Message-ID:  <ABFF9F93-E969-425F-895E-4792D3067305@mac.com>
In-Reply-To: <4E00DD44.1070706@gmx.de>
References:  <E012414FCF65894B89F69DE76AE15E9905905E67@CPT-EXCH01.int.mtnbusiness.net> <4DFF1A70.3030300@my.gd> <E012414FCF65894B89F69DE76AE15E9905905FEF@CPT-EXCH01.int.mtnbusiness.net> <4E00DD44.1070706@gmx.de>

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On Jun 21, 2011, at 11:04 AM, Lokadamus wrote:
> Mon Jun 20 11:41:58 2011 849M /tmp
> Mon Jun 20 11:42:01 2011 Filesystem Size Used Avail Capacity Mounted on /dev/amrd0s1a 989M 987M -76M 108% /
> 
> When a partition is over 100% its use backup place for defect sektors. A partition is/ was created with 110% and 10% are for defect sectors.
> A partition should not grow over 100%.

While hard drives do contain spare sectors used to replacing defective ones, that's not what the 110% or 108% filesystem space is for-- this spare capacity is used by FFS to reduce fragmentation, but can also be written to by root at the cost of considerable performance.

See "man tunefs".

Regards,
-- 
-Chuck




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