Date: Wed, 7 Oct 2009 07:49:03 -0600 (MDT) From: Warren Block <wblock@wonkity.com> To: Philip Jocks <pjlists@netzkommune.de> Cc: freebsd-questions@freebsd.org Subject: Re: dump_snapshot file Message-ID: <alpine.BSF.2.00.0910070745280.18618@wonkity.com> In-Reply-To: <9CC197E2-43F9-4583-9DE6-EDC51E1618F0@netzkommune.de> References: <9CC197E2-43F9-4583-9DE6-EDC51E1618F0@netzkommune.de>
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On Wed, 7 Oct 2009, Philip Jocks wrote: > I had a file /usr/.snap/dump_snapshot being about 15GB in size, which I > removed because the partition was filling up. > The file's date was always rather current, so I'm wondering, what it was for? > I did do a level 0 dump with -0 and -Lau parameters a few weeks ago and > always do dumps on other boxes, but never saw a file in the .snap directory > growing. For the other partitions, there are no such files, that's why I'm > wondering. > Maybe someone can shed some light on this for me. man -P 'less +/-L' dump explains it a bit. The snapshot file is supposed to go away after dump completes, but in your case dump died or was killed before it unlinked the file. On small filesystems, -L is quick enough to not make a noticeable difference. /usr can be huge, and there's a long pause while it makes that snapshot and doesn't seem to be doing anything useful. -Warren Block * Rapid City, South Dakota USA
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