Date: Mon, 31 Oct 2005 17:09:02 +0100 From: Csaba Henk <csaba-ml@creo.hu> To: freebsd-questions@freebsd.org Cc: Eric Schuele <e.schuele@computer.org> Subject: Re: backup strategies Message-ID: <20051031160902.GI2911@beastie.creo.hu> In-Reply-To: <43663AE0.2040606@computer.org> References: <20051030134902.GG2911@beastie.creo.hu> <72cf361e0510300958w33bf3u3f754e68794b858d@mail.gmail.com> <43651D7B.6000005@computer.org> <20051031140038.GH2911@beastie.creo.hu> <43663AE0.2040606@computer.org>
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On Mon, Oct 31, 2005 at 09:40:16AM -0600, Eric Schuele wrote: > How do snapshots work and how do they provide the consistency necessary > for a dump? [...] > > SoftUpdates are required on the filesystem. This sounds beautiful. I am amazed. I knew of softupdates, but they were always a shady corner of my understanding of BSD. So live fs dumping is based on the great hackery of softupdates. Fine, but in this case... shouldn't the man page make a mention of it? It just says that -L is ignored in case of unmounted/ro mounted fs-s, or if there is no proper .snap dir. But it doesn't say that it will be ignored if softupdates is not turned on... Going a bit off: which OS-es provide this live snapshot dumping capability? FreeBSD? FreeBSD >= 5.x ? *BSD ? Maybe something else? (AFAIK, softupdates is supported also in other members of the BSD family, yet the NetBSD dump manpage didn't have such a -L flag...) -- Csaba Henk My sense of humour is often too subtle to cope with getting smileyd. Please don't take it personal.
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