Date: Mon, 08 Dec 2014 20:16:51 -0600 From: Karl Denninger <karl@denninger.net> To: freebsd-fs <freebsd-fs@freebsd.org> Subject: Re: ZFS scrub on new disks gives cksum errors Message-ID: <20141209021651.4304976.79605.2556@denninger.net> In-Reply-To: <20141209021042.GA649@iozz.us> References: <20141208155230.GA574@iozz.us> <5485CB35.5010608@multiplay.co.uk> <CACfj5vLXnAZgkbGnw-B0GTAsj7cHh097zzig54rcAUt=7PFHoA@mail.gmail.com> <20141209021042.GA649@iozz.us>
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Stepped-wave ups power is perfectly fine to feed a switching power supply -= - in fact most run COOLER on it than on sine wave power! --=A0Karl (On=A0Passport=A0PDA) =A0 Original Message =A0 From: Brian N Sent: Monday, December 8, 2014 20:11 To: Sean Chittenden Cc: freebsd-fs@freebsd.org Subject: Re: ZFS scrub on new disks gives cksum errors On Mon, Dec 08, 2014 at 09:09:51AM -0800, Sean Chittenden wrote: > I had this exact problem at home on my FreeNAS host when a box is plugged > in to residential power that is "not clean." If you plug this host in to a > UPS it should clear things up instantly (find a sine wave UPS, not a > digital stepping supply). There's something about the fluctuating power or > brownouts that ZFS is well suited to detecting (and became terrifying to = me > because wtf happened in the past pre-ZFS??). >=20 > -sc Interesting. I have a UPS (APC Back-UPS ES 550 (stepped)) on the same circu= it (residential power) that routinely gives me power outage messages where an outage lasts 1-2 seconds. Other electrical devices (lights, etc) are not affected and I just thought that the UPS was very sensitive. Thanks for the reply. _______________________________________________ freebsd-fs@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-fs To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" %SPAMBLOCK-SYS: Matched [@freebsd.org+], message ok
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