Date: Tue, 30 Oct 2012 08:50:01 -0700 From: Dennis Glatting <freebsd@penx.com> To: Paul Wootton <paul-freebsd@fletchermoorland.co.uk> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS RaidZ-2 problems Message-ID: <1351612201.88435.23.camel@btw.pki2.com> In-Reply-To: <508FE643.4090107@fletchermoorland.co.uk> References: <508F98F9.3040604@fletchermoorland.co.uk> <1351598684.88435.19.camel@btw.pki2.com> <508FE643.4090107@fletchermoorland.co.uk>
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On Tue, 2012-10-30 at 14:37 +0000, Paul Wootton wrote: > On 10/30/12 12:04, Dennis Glatting wrote: > > I've had this problem too. Here is what I can tell you for my case. > > ... I replaced the card, the cable, and the disks themselves leaving > > only one other possibility -- the power supply. The faulting array was > > on a separate cable from the power supply. I replaced the power > > supply, going from a 1,000W to 1,300W, and the power cables to the > > disks. Not a problem since. > > While I can accept that I might have a bad power supply. or cables, my > main concern is that I have only 1 drive showing as "Unavail" on a > RAIDZ-2 and the pack is showing "Faulted". > I would have expected that pack to continue working with 2 bad drives, > and would have failed if I had 3rd one fail I have successfully upgraded arrays by replacing disks in a RAIDz and RAIDz2 array one at a time, so I know for certain one disk failures work as expected. I tried replacing two at once in a RAIDz2 array but it did not succeed; however it was also the array with the bad power supply. That said, it certainly tried to rebuild the array.
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