The last couple of comments sound like it's bug #252345 The following will recreate a static mdadm.conf (possible workaround) but is not a fix to the issue (disfunctional hotpluging):
# /usr/share/mdadm/mkconf force-generate /etc/mdadm/mdadm.conf # update-initramfs -k all -u -- 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
