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Date:      Sun, 01 Mar 2015 19:21:18 -0700
From:      Ian Lepore <ian@freebsd.org>
To:        Brett Wynkoop <freebsd-arm@wynn.com>
Cc:        freebsd-arm@freebsd.org
Subject:   Re: crash on writing usbstick
Message-ID:  <1425262878.1287.4.camel@freebsd.org>
In-Reply-To: <20150301203244.55578413@ivory.wynn.com>
References:  <20150301041855.5352663e@ivory.wynn.com> <20150301144653.63b38cdf@ivory.wynn.com> <20150301184456.7b5e6487@ivory.wynn.com> <1DC8221F-64EA-418C-8CE5-5FFA4F3DBC64@bsdimp.com> <20150301203244.55578413@ivory.wynn.com>

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On Sun, 2015-03-01 at 20:32 -0500, Brett Wynkoop wrote:
> On Sun, 1 Mar 2015 16:55:59 -0700
> Warner Losh <imp@bsdimp.com> wrote:
> 
> > Your filesystem looks messed up. Panics are likely to haunt you.
> > You’ll need to newfs it and reload the data.
> > 
> > Also, it would be great if you could type ‘tr’ to the db> prompt to
> > get a call stack traceback. That would be quite helpful.
> > 
> > Warner
> 
> It seems counter to the design of the ffs, especially with softupdates
> enabled that one should have to newfs.  fsck claimed to have fixed the
> filesystem, but to be complete I have just done a newfs on the
> partation again and will attempt the copy yet again.
> 
> root@beaglebone:~ # newfs -J -U /dev/gpt/bbexport

IMO, there's your problem right there.  People have been reporting for
years that softupdates + journaling = corruption.  The freebsd project's
collective response to all those reports has been a rather silent yawn.
The only sane response, IMO, is to not use journaling.

-- Ian





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