Date: Sun, 19 Dec 2010 00:41:42 -0500 From: Gary Palmer <gpalmer@freebsd.org> To: "James R. Van Artsdalen" <james-freebsd-fs2@jrv.org> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS recovery after power failure Message-ID: <20101219054142.GC70444@in-addr.com> In-Reply-To: <4D0D8095.6000106@jrv.org> References: <AANLkTikpYhLFxTp-5ahXQcZTMC5jMTK9Ca%2B6Xq4VEhhO@mail.gmail.com> <4D0D156B.1070402@jrv.org> <4D0D8095.6000106@jrv.org>
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On Sat, Dec 18, 2010 at 09:48:37PM -0600, James R. Van Artsdalen wrote: > On 12/18/2010 2:11 PM, James R. Van Artsdalen wrote: > > I do know how to recover pools. But I do want to know how it failed. > > Er, I meant to say I do NOT know how to recover pools. > > Sergey's failure doesn't fit any pattern I am familiar with. Loss of > power should not have been harmful. > > Perhaps 3ware "cheats" and returns success to SYNC before the disk > actually completes the command? 3ware controllers can be configured with write-back cache even without a battery backup, which will almost certainly mean loss of data if the power is pulled.
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