On Sunday 23 July 2006 07:25, Neil Brown wrote: > On Sunday July 23, pwaldo@xxxxxxxxxxxxx wrote: > > Please, please! I am dead in the water! > > > > To recap, I have a RAID6 array on a Fedora Core 5 system, using > > /dev/hd[acdeg] 2 and /dev/sd[ab]2. /dev/hdd went bad so I replaced the > > drive and tried to add it back to the array. Here is what happens: > > > > #mdadm --assemble /dev/md1 /dev/hd[acdeg]2 /dev/sd[ab]2 > > mdadm: no RAID superblock on /dev/hdd2 > > mdadm: /dev/hdd2 has no superblock - assembly aborted > > > > I also tried assembling without the new drive: > > #mdadm --assemble /dev/md1 /dev/hd[aceg]2 /dev/sd[ab]2 > > mdadm: failed to RUN_ARRAY /dev/md1: Input/output error > > > > Forgive me if the messages are not exactly correct, as I am booted into > > the FC rescue disk and I am transcribing what I see to another computer. > > > > How can I get mdadm to use the new drive? Am I completely fscked? > > Thanks in advance for any help!!!! > > Sorry for not following through on this earlier. > I think I know what the problem is. > > From the "-E" output you have me : > Device Size : 155308288 (148.11 GiB 159.04 GB) > > From the fdisk output in the original email: > > [root@paul ~]# fdisk -l /dev/hdd > > Disk /dev/hdd: 160.0 GB, 160029999616 bytes > 255 heads, 63 sectors/track, 19455 cylinders > Units = cylinders of 16065 * 512 = 8225280 bytes > > Device Boot Start End Blocks Id System > /dev/hdd1 1 122 979933+ fd Linux raid > autodetect /dev/hdd2 123 19455 155292322+ fd Linux > raid autodetect > > > Notice that hdd2 is 155292322, but the device needs to be > 155308288. It isn't quite big enough. > mdadm should pick this up, but obviously doesn't, and the error message > isn't at all helpful. > I will fix that in the next release. > For now, repartition your drive so that hdd2 is slightly larger. > > NeilBrown Hi Neil, Thanks for the quick reply. I tried your suggestion. I now see that /dev/hda2 (good partition) is 155308387 blocks. I repartitioned /dev/hdd such that /dev/hdd2 is also 155308387, but I still get the message about no superblock on hdd2 :-(. I used --force. Paul - 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
