On Sun, 09 Jan 2011 17:13:10 -0500 Matthew Gabeler-Lee <cheetah@xxxxxxxxxxx> wrote: > On 1/9/2011 16:57, NeilBrown wrote: > > Simply running > > mdadm --zero-superblock /dev/sdb > > > > should fix it. > Well, that doesn't work very well: "mdadm: Couldn't open /dev/sdb for write > - not zeroing" ... strace reveals that mdadm is trying to open it O_EXCL, > which I presume is why it's not working ... I presume I'd have to reboot to > single user mode and stop the LVM and possibly MD stuff in order for that to > work, which might then require booting from a rescue cd to do it. Sorry, I forgot that the device would be in use. In that case mdadm --zero-superblock --force /dev/sdb would have done the trick. But you found another way which worked just as well. NeilBrown -- 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
