From owner-freebsd-arm@freebsd.org  Thu Oct 29 23:47:26 2015
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Message-ID: <1446162443.91534.213.camel@freebsd.org>
Subject: Re: Full SD Card
From: Ian Lepore <ian@freebsd.org>
To: John-Mark Gurney <jmg@funkthat.com>
Cc: freebsd-arm <freebsd-arm@freebsd.org>
Date: Thu, 29 Oct 2015 17:47:23 -0600
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On Thu, 2015-10-29 at 16:08 -0700, John-Mark Gurney wrote:
> Ian Lepore wrote this message on Thu, Oct 29, 2015 at 16:29 -0600:
> > On Thu, 2015-10-29 at 15:27 -0700, John-Mark Gurney wrote:
> > > It is possible that if the machine crashed, that space is lost,
> > > so
> > > booting to single user mode, and running fsck manually may
> > > recover
> > > some space too...
> > 
> > Why would a manual fsck in SU mode be necessary to recover the
> > space? 
> 
> It shouldn't be, but some times hardware misbehaves, etc...  I've had
> a machine that ran SU+J on a CF to IDE adapter, and after some
> crashes,
> a normal fsck would not make the fs clean, and required a manual fsck
> to restore the file system to correct state...  I believe that it was
> an issue w/ the hardware, but never tracked it down exactly...
> 

Oh.  SU+J.  'nuff said.  I think we turned that off by default on arm
images, because people have been reporting trouble with it for years.

-- Ian