Linux Software RAID1 defekte Platte tauschen

http://www.wiki.hetzner.de/index.php/Festplattenaustausch_im_Software-RAID

http://ailoo.net/2009/01/linux-software-raid1-defekte-platte-tauschen/

http://blog.sleeplessbeastie.eu/2012/05/14/how-to-backup-dos-type-partition-table-gpt-and-lvm-metadata/

To backup GUID partition table use sgdisk command (from gdisk package):

$ sgdisk -b sda_gpt_backup /dev/sda

Restore it in similar way:

$ sgdisk -l sda_gpt_backup /dev/sda

Anschließend gibt man der Festplatte eine neue zufällig UUID

sgdisk -G /dev/sdb