I did Warren's RAID-1 howto: http://togami.com/~warren/guides/remoteraidcrazies/ =========== 1. On this system I raid-1 /dev/hda and /dev/hdc together. And I'm getting these errors during the copy process. hdc: dma_intr: error=0x84 { DriveStatusError BadCRC } hdc: dma_intr: status=0x51 { DriveReady SeekComplete Error } Come to find out Fedore Core 1 put's the "ide-scsi" in the second ide channel since I've got a CDRW there (hdd). Doing a 'rmmod ide-scsi' took care of all the dma errors and the copy process goes through fine. So I removed the "ide-scsi" from grub too. I assume that ide-scsi on a same channel as a raid-1 member is a big no-no? Maybe I should be putting raid devices on the same channel now so that dma is at it's highest setting for both devices. =========== =========== 2. On another system with the same raid-1 setup, I'm getting kernel errors: kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000015 kernel: printing eip: kernel: c0159772 kernel: *pde = 04f30067 kernel: *pte = 00000000 kernel: Oops: 0000, etc. ,etc. So I decided to redo the swap partition (which is ARRAY /dev/md3 devices=/dev/hdd3,/dev/hda3): # swapoff -a # mdadm --stop --scan # sync; mkswap /dev/md3 mkswap: error: swap area needs to be at least 40kB Usage: mkswap [-c] [-v0|-v1] [-pPAGESZ] /dev/name [blocks] What I don't understand is that the 3rd partion of both drives which are identical have 522112 blocks available: # sfdisk -l /dev/hda Disk /dev/hda: 4865 cylinders, 255 heads, 63 sectors/track Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0 Device Boot Start End #cyls #blocks Id System /dev/hda1 * 0+ 12 13- 104391 fd Linux raid autodetect /dev/hda2 13 904 892 7164990 fd Linux raid autodetect /dev/hda3 905 969 65 522112+ fd Linux raid autodetect /dev/hda4 970 4864 3895 31286587+ fd Linux raid autodetect # sfdisk -l /dev/hdd Disk /dev/hdd: 4865 cylinders, 255 heads, 63 sectors/track Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0 Device Boot Start End #cyls #blocks Id System /dev/hdd1 * 0+ 12 13- 104391 fd Linux raid autodetect /dev/hdd2 13 904 892 7164990 fd Linux raid autodetect /dev/hdd3 905 969 65 522112+ fd Linux raid autodetect /dev/hdd4 970 4864 3895 31286587+ fd Linux raid autodetect I'll trying removing the swap line out of /etc/fstab and reboot, and try and add it back but I have a feeling that won't work. Any other ideas? =========== -Eric Wood - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
