Date: Mon, 27 Oct 2008 18:56:24 -0700 From: Carl Voth <cvoth@telus.net> To: freebsd-questions@freebsd.org Subject: gmirror slice insertion, "FAILURE - READ_DMA status=51<READY, DSC, ERROR>" Message-ID: <49067148.6080307@telus.net>
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I'm setting up a dual-disk server and am trying to bring it up with gmirror and gjournal. One slice per disk, the goal being to create a single mirror from said slices with some of the partitions journaled. Installed FreeBSD-7.0RELEASE to ad4, then used technique from here to create single-disk mirror/gm0 on ad6: http://people.freebsd.org/~rse/mirror/ Modified ad4s1a /boot.config to pass control to boot stage 3 on ad6. So far, 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)] After that, nothing. System unresponsive. Perhaps needless to say, the system also becomes unbootable because the whole point here was to nuke ad4 as part of inserting it into mirror/gm0. I reinstalled FB7 to ad4, redid the /boot.config modification to make ad6/gm0 bootable again and retried the insertion of ad4 into gm0. Exact same error messages at exactly the same point with same consequences. Now, I see that other folks are having unexplained DMA problems too, albeit in different contexts. What should I be concluding here? Those other folks don't seem to be concluding it's bad drives. If there were bad sectors, I'd get different error messages, yes? FWIW, I'm using gjournal on 3 partitions in mirror/gm0. Here's my server's parts list: - Intel S3210SHLC Motherboard. - Kingston KVR800D2E5/2GI 2GB DRAM (x2). - Intel BX80570E3110 Dual-Core Xeon E3110, 3 Ghz 6MB L2 Cache, LGA775. - Seagate ST31000340AS Barracuda 7200.11, 1TB, SATA (x2). - LG GH20NS10 Internal Super-Multi SecurDisc 20X SATA DVD Rewriter. - Antec 4U22EPS650XR case (NeoPower 650W PSU). Carl / K0802647
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