I'm getting confused again. I installed Debian 3.1 onto two SCSI drives set up as raid1. I also set-up the four ide drives, during installation and set them as /dev/md7 using /dev/hda,/dev/hdc /dev/md8 using /dev/hab,/dev/hdd both ext3 they started, and sync'd on reboot, md7 and md8 didn't auto start. so i created them again with mdadm -C /dev/md7 -l1 -n2 /dev/hda /dev/hdc this stared rebuilding. then i did the same for md8 mdadm -C /dev/md8 -l1 -n2 /dev/hdb /dev/hdd then i did mkfs.ext3 /dev/md7 mkfs.ext3 /dev/md8 I checked with Fdisk that they were all set as FD. then i did (i made a copy of the original mdadm.conf first.) mdadm --detail -- scan > mdadm.conf And on reboot only md0 would mount. So i copied the original mdadm.conf back and rebooted, and all the raids apart from md7 and md8 started. I noticed at the top of the original mdadm.conf i had the following DEVICE partitions so i did mdadm --detail -- scan > mdadm.conf again, with md7 and md8 running and rebooted. adding DEVICE partitions back to the top The system booted up but again without md7 or md8, it did its corrupt superblock or ext2 file system complaints. But I'm getting confused, because, on http://www.linuxdevcenter.com/pub/a/linux/2002/12/05/RAID.html which is where i got the mdadm --detail -- scan > mdadm.conf from, the example he gives DEVICE /dev/sdb1 /dev/sdc1 ARRAY /dev/md0 level=raid0 num-devices=2 UUID=410a299e:4cdd535e:169d3df4:48b7144a is the other way round in my mdadm.conf file, i have ARRAY /dev/md0 level=raid0 num-devices=2 UUID=410a299e:4cdd535e:169d3df4:48b7144a DEVICE /dev/sdb1 /dev/sdc1 Which way round should it be? I have also read that a mdadm.conf file isn't really needed, but can be helpful, if i hide me mdadm.conf file will the system boot with md7 and md8. I do have those two raids in my fstab file at the end as /dev/md7 /Cad100 ext3 defaults 0 2 /dev/md8 /Cad200 ext3 defaults 0 2 Can anybody help :o( Ken -----Original Message----- From: Ken Walker [mailto:ken.walker@xxxxxxxxxxxxxxxx] Sent: 06 September 2005 2:26 pm To: linux-raid@xxxxxxxxxxxxxxx Subject: my first raid disaster on reboot :o( I've got debian 3.1, kernel 2.6 installed on a machine with two 9.1g SCSI and 4 160g IDE's. The SCSI is split up into / /usr /var /swap /tmp and /home, each set as a raid1. The IDE's are set up as raid1 on the ide channels, such that hda is mirrored with hdc and hdb is mirrored with hdd. I had to move the system today so powered down with shutdown -h now. On reboot i just get / mounted ( i think ) and everything else says mdx corrupt superblock or such and not a valid ext2 fs. all the mirrors were set us as ext3 and when it was up and running /proc/mdstat said all was well. /etc/fstab has all the raids present. I'm kinda stuck as to where to start. Could anybody point me in the right direction please. many thanks Ken - 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 - 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
