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Re: SVN backup with lvm snapshots and rsync

From: Daniel Shahaf <d.s_at_daniel.shahaf.name>
Date: Thu, 16 Feb 2012 03:56:29 +0200

Nico Kadel-Garcia wrote on Wed, Feb 15, 2012 at 19:41:57 -0500:
> On Wed, Feb 15, 2012 at 6:19 PM, Philip Martin
> <philip.martin_at_wandisco.com> wrote:
> > Nico Kadel-Garcia <nkadel_at_gmail.com> writes:
> >
> >> Unless you do a "sync"
> >> command, or various low level flush commands, you don't know that you
> >> write to disk has actually made it to the platter.
> >
> > Subversion does that.  It uses fsync (plus fsync on directories on
> > Linux) before assuming data is on disk.
>
> So the risk is reduced, which is good. It lowers the window of
> vulnerability (between when a commit is published, and when the fsync
> occurs). This is actually good progamming. Not everyone who deals with
> real data is this thoughtful.

There is no "window of vulnerability".
Received on 2012-02-16 02:57:27 CET

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