Date: Thu, 7 Feb 2002 19:08:49 +0100 From: Markus Stumpf <maex-freebsd-hackers@Space.Net> To: Dan Nelson <dnelson@allantgroup.com> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: dump(8) race conditions? Message-ID: <20020207190849.B87994@Space.Net> In-Reply-To: <20020207175402.GA79258@dan.emsphone.com>; from dnelson@allantgroup.com on Thu, Feb 07, 2002 at 11:54:02AM -0600 References: <20020207185052.A87994@Space.Net> <20020207175402.GA79258@dan.emsphone.com>
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On Thu, Feb 07, 2002 at 11:54:02AM -0600, Dan Nelson wrote:
> Dump should ideally be run on an unmounted filesystem. The next best
> is to create a snapshot ( /usr/src/sys/ufs/ffs/README.snapshot ) and
> dump that.
True.
But on systems that host e.g. mailservers or webservers its unacceptable
to disrupt services tp umount and backup the system :/
$ uname -a
FreeBSD 4.4-RELEASE
$ more /usr/src/sys/ufs/ffs/README.snapshot
/usr/src/sys/ufs/ffs/README.snapshot: No such file or directory
:-)))
Located it in stable, but the READNE says:
2) Run dump on the snapshot. You will get a dump that is
consistent with the filesystem as of the timestamp of the
snapshot. Note that I have not yet changed dump to set the
dumpdates file correctly, so do not use this feature in
production until that fix is made.
:-((
Anyway, I have no problem with the errors per se, just wanted
to know if they could result from the race conditions or if I have
to better change the disks.
\Maex
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