Date: Sat, 5 Dec 2009 20:06:34 +0000 From: Baldur Gislason <baldur@foo.is> To: Rich <rincebrain@gmail.com> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS and reordering drives Message-ID: <20091205200634.GS73250@gremlin.foo.is> In-Reply-To: <5da0588e0912051121i32d09b37xe44057add4c052f3@mail.gmail.com> References: <20091205170400.GM73250@gremlin.foo.is> <8555674.871260033069220.JavaMail.root@zimbra> <20091205184112.GP73250@gremlin.foo.is> <5da0588e0912051052p25fb743ele098ed9cb9de8fa0@mail.gmail.com> <20091205190641.GQ73250@gremlin.foo.is> <20091205191526.GR73250@gremlin.foo.is> <5da0588e0912051121i32d09b37xe44057add4c052f3@mail.gmail.com>
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It is indeed. root@enigma:~# smartctl -a /dev/ad4 | grep Capa User Capacity: 1,000,204,886,016 bytes root@enigma:~# smartctl -a /dev/ad6 | grep Capa User Capacity: 1,000,204,886,016 bytes root@enigma:~# smartctl -a /dev/ad16 | grep Capa User Capacity: 1,000,203,804,160 bytes root@enigma:~# smartctl -a /dev/ad20 | grep Capa User Capacity: 1,000,204,886,016 bytes The problematic drive now seems to have 1MB less capacity than the rest. I uploaded the output from smartctl -a for all the drives to http://foo.is/~baldur/brokenzfs They're all identical drives, bought at the same time and the same place. root@enigma:~# smartctl -a /dev/ad4 | grep WD Device Model: WDC WD10EADS-00L5B1 Serial Number: WD-WCAU48443245 root@enigma:~# smartctl -a /dev/ad6 | grep WD Device Model: WDC WD10EADS-00L5B1 Serial Number: WD-WCAU48472608 root@enigma:~# smartctl -a /dev/ad16 | grep WD Device Model: WDC WD10EADS-00L5B1 Serial Number: WD-WCAU48509212 root@enigma:~# smartctl -a /dev/ad20 | grep WD Device Model: WDC WD10EADS-00L5B1 Serial Number: WD-WCAU48410170 The fact that it has shrunk in size explains why the labels at the end of the drive got lost. Baldur On Sat, Dec 05, 2009 at 02:21:09PM -0500, Rich wrote: > That's quite fascinating. > > What are the details on the drives? > > [relatedly, use smartctl to tell you if there are any unrecoverable > sectors? It may have shrunk the visible drive size, though I find that > unlikely.] > > - Rich
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