On May 30, 2010, Robert Hancock wrote: > On Sun, May 30, 2010 at 1:33 PM, Thomas Fjellstrom > > <tfjellstrom@xxxxxxxxxxxxxxx> wrote: > > On May 30, 2010, Thomas Fjellstrom wrote: > >> On May 30, 2010, Robert Hancock wrote: > >> > On 05/29/2010 08:46 PM, Thomas Fjellstrom wrote: > >> > > I'm getting a rather nasty set of messages from dmesg when trying > >> > > to use a couple SATA II WD 2TB Green drives with an older system > >> > > (via 8237 based). They seem to work fine on a newer p35 based > >> > > system. > >> > > >> > .. > >> > > >> > > [ 283.308963] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 > >> > > action 0x0 [ 283.309007] ata2.00: BMDMA stat 0x4 > >> > > [ 283.309045] ata2.00: failed command: READ DMA > >> > > [ 283.309089] ata2.00: cmd c8/00:08:08:08:30/00:00:00:00:00/e0 > >> > > tag 0 dma 4096 in [ 283.309091] res > >> > > 41/04:00:08:08:30/00:00:00:00:00/e0 Emask 0x1 (device error) [ > >> > > 283.309171] ata2.00: status: { DRDY ERR } > >> > > [ 283.309207] ata2.00: error: { ABRT } > >> > > [ 283.324886] ata2.00: configured for UDMA/133 > >> > > [ 283.324904] ata2: EH complete > >> > > >> > It's not really clear why the drive is returning command aborted on > >> > a read, there's no other error bits to indicate an uncorrectable > >> > error or a CRC error. Is it only the one drive that's giving the > >> > errors? > >> > >> I'm not entirely sure if its the same drive each time. I can make sure > >> today. The fun part is it works fine in a different machine. Where as > >> it will start erroring out like that almost right away in the via > >> based machine. When its doing that, its also making some fairly scary > >> (for a hard drive) noises, but since it doesn't do that in the p35 > >> machine I'm really hoping it isn't the drive. > > > > I've started up a dd on each drive, just for kicks, and reading from > > both of them at the same time seems to work fine on the via chipset. > > Given this little tid-bit, it seems its only once md-raid is setup on > > the drives does one of them freak out. > > If the problem happens mostly when both drives are in use then it > could be a power supply issue. Some drives are rather sensitive to > power fluctuations. You could try and move the drives to separate > power cables if they're on the same one, or maybe the power supply's > just not up to snuff. I'll give that a shot too. But I have dd running on both drives right now (dd if=/dev/sdX of=/dev/null), and its running fine. I'm also going to run some other tests, see if maybe there isn't a ram problem, it could be the cause. > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" > in the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- Thomas Fjellstrom tfjellstrom@xxxxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html