Tuesday 05 February 2008 21:12:32 Neil Brown napisał(a): > > % mdadm --zero-superblock /dev/sdb1 > > mdadm: Couldn't open /dev/sdb1 for write - not zeroing > > That's weird. > Why can't it open it? Hell if I know. First time I see such a thing. > Maybe you aren't running as root (The '%' prompt is suspicious). I am running as root, the "%" prompt is the obfuscation part (I have configured bash to display IP as part of prompt). > Maybe the kernel has been told to forget about the partitions of > /dev/sdb. But fdisk/cfdisk has no problem whatsoever finding the partitions . > mdadm will sometimes tell it to do that, but only if you try to > assemble arrays out of whole components. > If that is the problem, then > blockdev --rereadpt /dev/sdb I deleted LVM devices that were sitting on top of RAID and reinstalled mdadm. % blockdev --rereadpt /dev/sdf BLKRRPART: Device or resource busy % mdadm /dev/md2 --fail /dev/sdf1 mdadm: set /dev/sdf1 faulty in /dev/md2 % blockdev --rereadpt /dev/sdf BLKRRPART: Device or resource busy % mdadm /dev/md2 --remove /dev/sdf1 mdadm: hot remove failed for /dev/sdf1: Device or resource busy lsof /dev/sdf1 gives ZERO results. arrrRRRGH Regards, Marcin Krol - 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
