I had this setup running under ubuntu 9.04 with raid6, all nine drives for about a month without any of these issues. I installed the new ubuntu fresh and tried to rebuild the array with a larger chunk size. I also created the file system with the proper stride and width parameters. I am wondering if TLER, or a larger chunk, ext options, or OS change might have caused this. I do not think that it is a backpane issue... I will however re-seat all of the drives here in a little bit. Ryan Wagoner wrote: > Is this the box on your blog at http://blog.agdunn.net/?p=391 ? If so > those cards are to be used in the Supermicro UIO slot, which is > basically just an inverted PCI Express slot. However since there is > only one UIO slot per board they might have not tested compatibility > with multiple in the same system. > > I do have one of these boards installed on an Intel board without > issue. I have had the 7 drives connected in mdadm RAID for almost 2 > years now with no dropouts. You might try a port multiplier since the > card supports it and one drive isn't going to use the full bandwidth > of a single SAS cable. > > Ryan > > On Sun, Nov 8, 2009 at 10:01 AM, Robin Hill <robin@xxxxxxxxxxxxxxx> wrote: > >> On Sun Nov 08, 2009 at 09:24:20AM -0500, Andrew Dunn wrote: >> >>> Robin Hill wrote: >>> >>>> On Sun Nov 08, 2009 at 09:00:29AM -0500, Andrew Dunn wrote: >>>> >>>> >>>> >>>>> I just copied 4+ TiB of information to this array, restarted 5 times >>>>> and tried to access it.... What is going on? >>>>> >>>>> What kind of logs do you need, I really need help! >>>>> >>>>> >>>>> >>>> From the message you've posted, it looks like something has triggered >>>> the (simultaneous) removal of four drives from the array. I'd check the >>>> dmesg output - it should provide some information. I'd guess these four >>>> drives are all attached to the same controller (are they external or >>>> internal?), so possibly the controller reset (or for external drives, it >>>> could be a cable issue). >>>> >>>> >>> What would I be looking for on this? Its a lot to sift through. >>> >>> Currently just line-by-lining it. >>> >>> >> Look for where the drives are being kicked out of the array (should be >> towards the bottom). Just above that should be some error messages >> (often including bus resets). >> >> Cheers, >> Robin >> -- >> ___ >> ( ' } | Robin Hill <robin@xxxxxxxxxxxxxxx> | >> / / ) | Little Jim says .... | >> // !! | "He fallen in de water !!" | >> >> > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- Andrew Dunn http://agdunn.net -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
