I'm trying to rebuild a system with a non-mirrored root. I intentionally killed /dev/sda by yanking it (hotswap disk) and let the machine croak. I put the replacement disk in and rebooted, rebuilt (we have a system similar to jumpstart that makes this very fast and clean). I'm at the point of trying to restart /dev/md0 with one mirror dead. My raidtab looks like this: raiddev /dev/md0 raid-level 1 nr-raid-disks 2 nr-spare-disks 0 chunk-size 16 persistent-superblock 1 device /dev/lvm-vg1/lvm1 raid-disk 0 device /dev/lvm-vg2/lvm2 raid-disk 1 I changed the first raid-disk line to be: failed-disk 0 and then tried: root@rharris-build2.acs:~# raidstart /dev/md0 /dev/md0: Invalid argument md: could not lock [dev 9e:0e], zero-size? Marking faulty. md: could not import [dev 9e:0e]! md: autostart [dev 9e:0e] failed! At this point /dev/lvm-vg1/lvm1 doesn't exist and will need to be rebuilt but I'd like to get the machine up and running with /dev/md0 intact. Any idea what's wrong here? Robert Thus spake danci@agenda.si (danci@agenda.si): > On Thu, 20 Mar 2003, Robert L. Harris wrote: > > > > > > > No but according to the RAID HOWTO it says it's a valid keyword for when > > you need to build a mirror with a failed/missing disk (i.e. converting > > root to raid and can't kill your existing /) > > It is, but: > > 'failed-disk' replaces 'raid-disk' to inform the md driver, that a device > '/dev/sda1' should not be automatically synchronized. > > This gives you an operative array in degraded mode, so you can copy files > from your current root to your new degraded array. > > You have to change the file /etc/fstab (on the NEW filesystem) to use > /dev/md0 for root, arrange the boot manager (lilo, grub, whatever) to boot > with the new root (/dev/md0), reboot and 'un-fail' :) (or add) /dev/sda1 > to the array (using mdadm or raidhotadd). > > > D. > > > > > > > > Thus spake Lars Marowsky-Bree (lmb@suse.de): > > > > > On 2003-03-20T16:22:50, > > > "Robert L. Harris" <Robert.L.Harris@rdlg.net> said: > > > > > > > I'm trying to "mkraid /dev/md1" with the following: > > > > > > > > raiddev /dev/md1 > > > > raid-level 1 > > > > nr-raid-disks 2 > > > > nr-spare-disks 0 > > > > chunk-size 16 > > > > persistent-superblock 1 > > > > device failed-disk > > > > raid-disk 0 > > > > device /dev/sdb1 > > > > raid-disk 1 > > > > > > > > I'm trying to convert this machine to raid1 on root. Don't ask about > > > > the md1, long story. At any rate when I do the mkraid I get this: > > > > > > > > root@rharris-build2:~# mkraid /dev/md1 > > > > handling MD device /dev/md1 > > > > analyzing super-block > > > > couldn't call stat() on device failed-disk -- No such file or directory > > > > mkraid: aborted, see the syslog and /proc/mdstat for potential clues. > > > > > > Does your system have a device named 'failed-disk' ? I would assume not ;-) > > > > > > > > > Sincerely, > > > Lars Marowsky-Br?e <lmb@suse.de> > > > > > > -- > > > SuSE Labs - Research & Development, SuSE Linux AG > > > > > > "If anything can go wrong, it will." "Chance favors the prepared (mind)." > > > -- Capt. Edward A. Murphy -- Louis Pasteur > > > > :wq! > > --------------------------------------------------------------------------- > > Robert L. Harris | PGP Key ID: E344DA3B > > @ x-hkp://pgp.mit.edu > > DISCLAIMER: > > These are MY OPINIONS ALONE. I speak for no-one else. > > > > Diagnosis: witzelsucht > > > > IPv6 = robert@ipv6.rdlg.net http://ipv6.rdlg.net > > IPv4 = robert@mail.rdlg.net http://www.rdlg.net > > > > -- > ___________________________________________________________________ > | Danilo Godec | Agenda d.o.o. | ISP for business | > | jr. Syst. Admin | Gosposvetska 84 | WAN networks | > | danci@agenda.si | si-2000 Maribor | Internet/Intranet | > | tel:+386.2.2340860 | Slovenija | Application servers | > | fax:+386.2.2340854 | http://www.agenda.si | Caldera OpenLinux | > :wq! --------------------------------------------------------------------------- Robert L. Harris | PGP Key ID: E344DA3B @ x-hkp://pgp.mit.edu DISCLAIMER: These are MY OPINIONS ALONE. I speak for no-one else. Diagnosis: witzelsucht IPv6 = robert@ipv6.rdlg.net http://ipv6.rdlg.net IPv4 = robert@mail.rdlg.net http://www.rdlg.net
Attachment:
pgp00035.pgp
Description: PGP signature
