raid1 Replacing a disk

Planet Debian Administration

raid1 Replacing a disk

• mdadm --detail /dev/md$ check which disk is alive
• shutdown
• replace crashed harddisk
• boot machine
• sfdisk -d /dev/sda | sfdisk /dev/sdb
• mdadm --detail /dev/md0
• check partitions
• rebuild partitions with mdadm --add /dev/md0 /dev/sdb1
• check for other raid partitions
• check status with watch "cat /proc/mdstats"

After that it is finished I am ready for the next harddisk crash