Date: Tue, 28 Oct 2008 12:03:49 +0100 (CET) From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> To: Carl Voth <cvoth@telus.net> Cc: freebsd-questions@freebsd.org Subject: Re: gmirror slice insertion, "FAILURE - READ_DMA status=51<READY, DSC, ERROR>" Message-ID: <20081028120008.R3326@wojtek.tensor.gdynia.pl> In-Reply-To: <49067148.6080307@telus.net> References: <49067148.6080307@telus.net>
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> so good. Began Ralf's procedure for inserting ad4s1 into mirror/gm0. The > synchronization began and reached 6% when this little horror appeared: > > ad6: FAILURE - READ_DMA status=51<READY,DSC,ERROR> error=40<UNCORRECTABLE> > LBA=134802751 > GEOM_MIRROR: Request failed (error=5). ad6s1[READ(offset=69018976256, > length=131072)] > GEOM_MIRROR: Synchronization request failed (error=5). > mirror/gm0[READ(offset=69018976256, length=131072)] > your disk failed. (uncorrectable error) assuming you eliminated other causes like drives overheating, cabling problem (don't think so) etc.: boot from some kind of live CD, then make another mirror (single disk now) on other drive, then do dd if=/dev/ad6s1 of=/dev/mirror/newmirror bs=2k conv=noerror,sync i intentionally did bs=2k instead of larger, to minimize amount of lost data. then change your system to boot from newmirror, take out /dev/ad6 and have it replaced on warranty (or buy new), put new ad6, insert it to the mirror.
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