On Sat, 24 Apr 2010 06:18:57 -0500 Wierdl Máté <wierdlmate@xxxxxxxxx> wrote: > Hello, > > I have an old Dell Poweredge 2500 server running Fedora Core 3. The > server had one of its power units failed, and (I think) as a result, > the raid arrays got damaged: three of them stayed alive (though > degraded), but one is not accessible. Unfortunately, the server only > has a floppy drive which doesn't work now, and so I cannot get any > files, command outputs directly off the box. I copy it all from the > screen. > > The array I cannot access is md3. It has the shared libraries on it so > many commands do not work. In particular, I cannot have remote access > to the box. > > The output of > > mdadm -Es > > is (I am not copying the UUIDs) > > ARRAY /dev/md0 level=raid1 num-devices=2 devices=/dev/sdb2,/dev/sdc2 > ARRAY /dev/md2 level=raid1 num-devices=2 devices=/dev/sda6,/dev/sdc3 > ARRAY /dev/md3 level=raid5 num-devices=3 devices=/dev/sda3,/dev/sdb1,/dev/sdc1 > ARRAY /dev/md1 level=raid1 num-devices=2 devices=/dev/sda1,/dev/sda2 > > Also > > md0 mounted at / > md2 mounted at /var > md1 mounted at /boot > md3 should be mounted at /home > > # cat /proc/mdstat > Personalities: raid1 raid5 > md1: active raid1 sda2[1] sda1[0] > 104320 blocks [2/2] [UU] > > md2: active raid1 sda6[0] > 513984 blocks [2/1] [U_] > > md0: active raid1 sdc2[1] > 1534080 blocks [2/1] [_U] > > unused devices: none > > # mdadm --detail /dev/md3 > mdadm: md device /dev/md3 does not appear to be active > > At somebody's suggestion I tried > > mdadm --assemble --scan /dev/md0 > > and got > > /dev/sda has no superblock - assembly aborted > > Then tried > > mdadm --force --run /dev/md3 > > and got > > failed to run array /dev/md3: Invalid argument > > I finally tried > > # mdadm --assemble /dev/md3 /dev/sda3 /dev/sdb1 /dev/sdc1 > mdadm: device 1 in /dev/md3 has wrong state superblock, but /dev/sdb1 seems ok That looks close. Just add "--force" to that and it will probably get you going. NeilBrown > > Thanks for any help. I certainly would give remote access to a helping > hand, but unfortunately the box cannot run sshd: the shared libraries > are on the md3 array. > > Máté > > Máté Wierdl > Dept of Math Sci, Univ of Memphis > -- > 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 -- 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
