My solution, please tell me if I'm right: -remove the entire sdb disk from raid -remove sda2 from raid -resize sda1 (the rest of disk) -copy partition table from sda to sdb -make raid between sda1/sdb1 and sda3 and sdb3 Is this possible? On Sun, 05 Oct 2008 15:15:40 -0700, John R Pierce <pierce at hogranch.com> wrote: > Iulian Badea wrote: >> Hello all, >> >> I have 2 x 250GB sata disks (sda and sdb). >> >> # fdisk -l /dev/sda >> >> Disk /dev/sda: 250.0 GB, 250059350016 bytes >> 255 heads, 63 sectors/track, 30401 cylinders >> Units = cylinders of 16065 * 512 = 8225280 bytes >> >> Device Boot Start End Blocks Id System >> /dev/sda1 * 1 14939 119997486 fd Linux raid >> autodetect >> /dev/sda2 14940 29878 119997517+ fd Linux raid >> autodetect >> /dev/sda3 29879 30400 4192965 fd Linux raid >> autodetect >> >> # fdisk -l /dev/sdb >> >> Disk /dev/sdb: 250.0 GB, 250059350016 bytes >> 255 heads, 63 sectors/track, 30401 cylinders >> Units = cylinders of 16065 * 512 = 8225280 bytes >> >> Device Boot Start End Blocks Id System >> /dev/sdb1 * 1 522 4192933+ fd Linux raid >> autodetect >> >> # cat /proc/mdstat >> Personalities : [raid1] >> md2 : active raid1 sdb1[1] sda3[0] >> 4192832 blocks [2/2] [UU] >> >> md1 : active raid1 sda2[1] sda1[0] >> 119997376 blocks [2/2] [UU] >> >> What I want to do: >> - have on each disk 2 partitions (4gb for swap and the 200gb+ the rest > for >> /) >> - raid 1 between them >> >> This is what I wanted in the beginning, but...I didn't paid attention... >> >> What can I do to rebuild it to my needs (without loosing data or >> reformatting)? >> > > ouch. > > I'd boot a rescue CD, drop the mirrors, repartition and mkfs on sdb1, > dump both file systems to it, drop both metadisks, repartition sda1 as 2 > x raid1 w/o any active mirrors, mkfs on them, restore the dumps to these > new md0, md1, then repartition sdb again as the two mirrors and join > them to md0, md1 > > but thats just me. others might do it differently. > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos