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From: "Rodney W. Grimes" <freebsd@pdx.rh.CN85.dnsmgr.net>
Message-Id: <201806111952.w5BJqQNU029751@pdx.rh.CN85.dnsmgr.net>
Subject: Re: svn commit: r334970 - head
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To: Warner Losh <imp@freebsd.org>
Date: Mon, 11 Jun 2018 12:52:26 -0700 (PDT)
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[ Charset UTF-8 unsupported, converting... ]
> Author: imp
> Date: Mon Jun 11 19:32:40 2018
> New Revision: 334970
> URL: https://svnweb.freebsd.org/changeset/base/334970
> 
> Log:
>   Document the dump issue in UPDATING so people understand when they
>   get a new diagnostic.
> 
> Modified:
>   head/UPDATING
> 
> Modified: head/UPDATING
> ==============================================================================
> --- head/UPDATING	Mon Jun 11 19:32:36 2018	(r334969)
> +++ head/UPDATING	Mon Jun 11 19:32:40 2018	(r334970)
> @@ -32,6 +32,13 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 12.x IS SLOW:
>  	"ln -s 'abort:false,junk:false' /etc/malloc.conf".)
>  
>  
> +20180611:
> +	A bug in dump has been found where it can incorrectly dump filesystems
> +	with more than 512k inodes and produce corrupted dump images. r334968
> +	closes the door by not dumping filesystems with more than 512k inodes.
> +	While older dumps may 'work' the image they produce may or may not be
> +	readable depending on many factors.
> +

Does it make since to put a temporary warning in newfs to warn users
of the "may bot be able to dump this fs" issue?

Regards,
-- 
Rod Grimes                                                 rgrimes@freebsd.org