Find out what disk belongs to which md-set and try the --assemble option.. This should fix it, I think Theo Band wrote: > Hi > > I have setup software RAID two years ago using FC3 using the graphical > installer (RAID1). In the mean time I installed CENTOS4.5 and everything > is running fine. At least that was my perception. It now turns out that > raid is not working and that LVS just finds 4 partitions from four disks > and that's it.: > > /dev/sda2 VolGroup00 lvm2 a- 94.88G 0 > /dev/sdb1 VolGroup00 lvm2 a- 94.94G 10.00G > /dev/sdc1 VolGroup00 lvm2 a- 94.94G 74.94G > /dev/sdd1 VolGroup00 lvm2 a- 94.94G 70.81G > > These are 4 disk of each 200GB, and the disks have these partitions: > > Using /dev/sda > (parted) print > Disk geometry for /dev/sda: 0.000-194481.000 megabytes > Disk label type: msdos > Minor Start End Type Filesystem Flags > 1 0.031 101.975 primary ext3 boot > 2 101.975 97284.243 primary lvm > 3 97284.243 194474.355 primary raid > Disk geometry for /dev/sdb: 0.000-194481.000 megabytes > Disk label type: msdos > Minor Start End Type Filesystem Flags > 1 0.031 97237.177 primary boot, lvm > 2 97237.178 194474.355 primary raid > Disk geometry for /dev/sdc: 0.000-194481.000 megabytes > Disk label type: msdos > Minor Start End Type Filesystem Flags > 1 0.031 97237.177 primary boot, lvm > 2 97237.178 194474.355 primary raid > Disk geometry for /dev/sdd: 0.000-194481.000 megabytes > Disk label type: msdos > Minor Start End Type Filesystem Flags > 1 0.031 97237.177 primary boot, lvm > 2 97237.178 194474.355 primary raid > > So my feeling is that I need to setup the RAID again, but I don't want > to make any mistakes here, since this is a live system working fine. I > tried to read the mdadm manual but it's not quit clear to me what to do. > # mdadm -A --scan -v > mdadm: No arrays found in config file > > Shows I have to do more. The previous fedora installation is still > around, but is doesn't contain a /etc/mdadm.conf file. > > Can anyone help me with some steps to take to get it running again. I do > have backups, but if things go wrong restoring takes several hours. > > Thanks, > Theo > > > PS. > Send for the third time. Could it be that posting is limited to email > addresses that are subscribed to the list? > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >