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Date:      Fri, 10 Sep 2010 16:04:25 -0700
From:      Chuck Swiger <cswiger@mac.com>
To:        cronfy <cronfy@gmail.com>
Cc:        freebsd-questions <freebsd-questions@freebsd.org>
Subject:   Re: fsck reports errors on clean filesystem (mounted rw)
Message-ID:  <5FCC3CB1-D40F-47C2-946C-4095506D0091@mac.com>
In-Reply-To: <AANLkTim=hLv1cDtAWTa0XaoDpY2MXfk%2BWv2_qavnK5E2@mail.gmail.com>
References:  <AANLkTim=hLv1cDtAWTa0XaoDpY2MXfk%2BWv2_qavnK5E2@mail.gmail.com>

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On Sep 10, 2010, at 3:27 PM, cronfy wrote:
> 1. Can I be sure my filesystem is consistent?

Reasonably.

> 2. If fsck reports nonexistent errors (and probably will try to fix
> them if asked), isn't it even danger to run fsck on running system?

Running fsck in foreground mode on a mounted filesystem is not recommended.  

> 3. How can I check (not fix) filesystems while partitions are mouted
> rw and are under usage?

fsck -B...?  See "man fsck_ffs".

Regards,
-- 
-Chuck




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