On Jul 21, 2010, at 12:12 PM, Jussi Hirvi <listmember at greenspot.fi> wrote: > Something seems to be wrong with my file systems, and I want to fsck > everything. But I cannot. > > The setup consists of 2 hds, carrying 3 raid1 (ext3) file systems (boot, > /, swap). OS is up-to-date CentOS 5. > > So I boot from CentOS 5.3 dvd in rescue mode, do not mount the file > systems, and try to run > fsck -y /dev/md0 > fsck -y /dev/md1 > fsck -y /dev/md2 > > For each try I get an error message: "Superblock could not be found..." > "The device does not seem to contain a valid ext2 filesystem..." > > Well, of course not, the filesystem is ext3, not ext2. > > I also tried fsck.ext3, but the error messages stay the same. > > So, how could I fsck these arrays? Are you using lvm on top of the mdraid? If so you need to fsck the lvs not the mds. -Ross