Just ran into the same problem on Ubuntu 9.04 x64 Server. I had to adapt the workaround a little so that it worked for me
kaef...@blechserver:~$ uname -a Linux Blechserver 2.6.28-11-server #42-Ubuntu SMP Fri Apr 17 02:45:36 UTC 2009 x86_64 GNU/Linux kaef...@blechserver:~$ sudo losetup /dev/loop0 /dev/sdc1 kaef...@blechserver:~$ sudo losetup /dev/loop1 /dev/sdd1 kaef...@blechserver:~$ sudo losetup /dev/loop2 /dev/sde1 kaef...@blechserver:~$ sudo losetup /dev/loop3 /dev/sdf1 kaef...@blechserver:~$ sudo mdadm --assemble /dev/md1 /dev/loop0 /dev/loop1 /dev/loop2 /dev/loop3 mdadm: /dev/md1 has been started with 4 drives. -- mdadm cannot assemble array as cannot open drive with O_EXCL https://bugs.launchpad.net/bugs/27037 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs