also sprach Toni Mueller <[email protected]> [2009.09.29.1327 +0200]: > I repeatedly run into trouble trying to nuke ill-configured drives to > make them usable again (lest these bogus RAIDs show up eg. in d-i and > prevent me from properly configuring the drives). > > I am already aware of 'mdadm --zero-superblock' and friends, but have to > note that these just don't work. Eg. I was unable to use this command > from a shell, spawned from d-i, to remove bogus RAID0 superblocks from > the drives. > > I got error messages like this: > > ~ # mdadm --zero-superblock --force /dev/sda > mdadm: Couldn't open /dev/sda for write - not zeroing
So /dev/sda is being used by e.g. LVM or something similar, and mdadm cannot open it exclusively. I think this was recently fixed upstream, but I am not sure. There's also another bug on this, but I am too swamped to check right now. -- .''`. martin f. krafft <[email protected]> Related projects: : :' : proud Debian developer http://debiansystem.info `. `'` http://people.debian.org/~madduck http://vcs-pkg.org `- Debian - when you have better things to do than fixing systems
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