Date: Tue, 12 Aug 2014 15:04:51 -0600 (MDT) From: Warren Block <wblock@wonkity.com> To: Roland Smith <rsmith@xs4all.nl> Cc: freebsd-questions@freebsd.org, Andrew Hamilton-Wright <AHamiltonWright@MtA.ca> Subject: Re: Problems with dump and restore Message-ID: <alpine.BSF.2.11.1408121458130.10207@wonkity.com> In-Reply-To: <20140812193419.GB7166@slackbox.erewhon.home> References: <alpine.BSF.2.11.1408121255230.1074@qemg.org> <20140812193419.GB7166@slackbox.erewhon.home>
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On Tue, 12 Aug 2014, Roland Smith wrote: > In 2011, a problem was found with snapshots in combination with soft > updates *and* journaling (SU+J) hanging the machine. At that time the > recommendation was to switch off journaling. > According to https://wiki.freebsd.org/NewFAQs: > > If you want to use snapshot (dump -L) then disable the soft updates > journal for that filesystem. > > This bug was fixed toward the end of 2011; > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=160662 The snapshot code still does not support snapshots of mounted SUJ filesystems: http://svnweb.freebsd.org/base/head/sys/ufs/ffs/ffs_snapshot.c?revision=262678&view=markup#l234
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