Date: Fri, 1 Apr 2011 16:42:21 -0500 From: Adam Vande More <amvandemore@gmail.com> To: Chris H <chris#@1command.com> Cc: mlerota@claresco.hr, freebsd-stable@freebsd.org Subject: Re: Constant rebooting after power loss Message-ID: <AANLkTi=6pqRwJ96Lg=603cYg_f8QUXkg8aXtbjbYpFrV@mail.gmail.com> In-Reply-To: <14c23d4bf5b47a7790cff65e70c66151.HRCIM@webmail.1command.com> References: <87d3l6p5xv.fsf@cosmos.claresco.hr> <AANLkTi=kEyz-mKLzdV8LAf91ZhMTP8gLKs=3Eu5WD8mh@mail.gmail.com> <874o6ip0ak.fsf@cosmos.claresco.hr> <7b15d37d28f8ddac9eb81e4390231c96.HRCIM@webmail.1command.com> <AANLkTi=KEwmm1hM6Z=r_SWUAn9KhUrkTVzfF6VmqQauW@mail.gmail.com> <14c23d4bf5b47a7790cff65e70c66151.HRCIM@webmail.1command.com>
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On Fri, Apr 1, 2011 at 4:21 PM, Chris H <chris#@1command.com> wrote: > > > Greetings, > Not to sound disagreeable, but > if I interrupt the power during a disk write, no amount of ZFS will insure > that > the hardware completes it's write without electricity. Nor will any amount > of > ZFS prevent data corruption as a result of that interrupted write. > As already stated, if the write doesn't complete, the transaction group is rolled back to the last consistent state, so no corruption. There is plenty of literature of subject of how ZFS works internally to insure this: http://www.sun.com/bigadmin/features/articles/zfs_part1.scalable.jsp ZFS's capabilities may seem contrary to your opinion, but properly implemented it does exactly what you say it cannot do. -- Adam Vande More
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