Date: Sat, 12 Jan 2013 11:07:17 -0700 (MST) From: Warren Block <wblock@wonkity.com> To: Christian Gusenbauer <c47g@gmx.at> Cc: freebsd-hackers@freebsd.org, Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> Subject: Re: SATA disk disappears Message-ID: <alpine.BSF.2.00.1301121102100.8299@wonkity.com> In-Reply-To: <201301120925.55068.c47g@gmx.at> References: <alpine.BSF.2.00.1301110121060.6708@wojtek.tensor.gdynia.pl> <alpine.BSF.2.00.1301111142250.9937@wojtek.tensor.gdynia.pl> <alpine.BSF.2.00.1301111446050.1098@wonkity.com> <201301120925.55068.c47g@gmx.at>
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On Sat, 12 Jan 2013, Christian Gusenbauer wrote: > On Friday 11 January 2013 22:47:03 Warren Block wrote: >> On Fri, 11 Jan 2013, Wojciech Puchar wrote: >>>>> GEOM_MIRROR: Component ada2 (device home1) broken, skipping. >>>>> GEOM_MIRROR: Cannot add disk ada2 to home1 (error=22). >>>>> >>>>> >>>>> started gmirror rebuild and it now works at full speed. >>>>> >>>>> GEOM_MIRROR: Device home1: rebuilding provider ada2. >>>>> >>>>> >>>>> What kind of hardware failure may it be? smartctl -a /dev/ada2 shows >>>>> disk is fine. >>>> >>>> I had a new WD drive recently that had a write error. Reallocated >>>> sector count did not go up, but it quickly failed the SMART self-test, >>>> short or long. See smartctl(8) about the -t parameters. >>> >>> this is WD "green" 3TB >> >> 1T Red here. The firmware is likely very similar. > > The same here: brandnew WD 2T green, 9.1 stable, svn rev. 244773, not using > GEOM. I had that problem two times within the last two weeks, but the smart > self tests can not find any errors/bad sectors. Hmm. The green drives are supposed to go to sleep for power saving, and then there's a multiple-second delay when they have to spin back up on access. That should not be a problem for gmirror, but maybe it is. sysutils/ataidle can turn on the spindown. Some drives do not accept that command, or claim to accept it but ignore it. Worth a try, though.
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