Good morning Phil. I was hoping you are around - thanks for answering. The distro is a ubuntu lts server version 14.04. I was able to chroot und grub-install /dev/sdb. The system is booting again. The md0-Array needs to be fixed now. My docu for doing so is mdadm --manage /dev/md0 --fail /dev/sda1 # mark as failed mdadm --manage /dev/md0 --remove /dev/sda1 # remove failed disk from array mdadm --manage /dev/md0 --add /dev/sda1 # add new disk to array (assumed same or greater space for partition) Can you confirm this? Thanks for your help. > Phil Turmel <philip@xxxxxxxxxx> hat am 4. Februar 2016 um 15:51 geschrieben: > > > Good morning Stefan, > > On 02/04/2016 09:21 AM, Stefan Lamby wrote: > > Hi. > > My md0 is broken because of a damaged sda. > > It was simple to find out which on it is thanks to lsdrv by Mr Turmel. > > You're welcome. Side note: It looks like lsdrv couldn't find the pvs > and lvs utilities to fully document your LVM setup. I'd be interested > in knowing which distro and version that environment was. > > > Now I have a new disk, same size, as sda with sda1 partition - same size - > > formatted as Linux raid autodetect. > > In the end I like to end up with the new sda1 as member of md0 and I need to > > put > > my boot information there, since sdb1, also member of md0, seems to no have > > no > > such info because the system wasn't booting with a missing sda1. > > >From what I can see from your report, you probably only need to do > grub-install /dev/sda and grub-install /dev/sdb > > The boot partition is mirrored for the bulk of grub's data, which means > normal upgrades and config changes "just work", but a new drive needs a > bootloader. That is outside the array in the space before the first > partition. > > > I am afraid of loosing data, so I prefer asking, what to do next. > > Please guide, I have the system up and running on a sysrescd live distro. > > I presume that means you booted a rescue CD and then used chroot to get > a command prompt in your installed system. If not, grub-install > probably won't work. Note that some distros use grub2-install. > > If the above doesn't work, let us know what it says. > > Phil > > -- 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
