>>> "Scott Marlowe" <[EMAIL PROTECTED]> wrote: > On Thu, Nov 6, 2008 at 3:33 PM, Kevin Grittner > <[EMAIL PROTECTED]> wrote: >>>>> "Scott Marlowe" <[EMAIL PROTECTED]> wrote: >>> I am pretty sure that with no write barriers that even a BBU >> hardware >>> caching raid controller cannot guarantee your data. >> >> That seems at odds with this: >> >> http://oss.sgi.com/projects/xfs/faq.html#wcache_persistent >> >> What evidence to you have that the SGI XFS team is wrong? > > Without write barriers in my file system an fsync request will > be immediately returned true, correct? Not as I understand it; although it will be pretty fast if it all fits into the battery backed cache. -Kevin
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