Am 30.11.20 um 21:06 schrieb David T-G:
Reindl, et al --
...and then Reindl Harald said...
%
...
%
% typically fire up my "raid-repair.sh" telling the script source and
% target disk for cloning partition table, mbr and finally add the new
% partitions to start the rebuild
[snip]
Oooh! How handy :-) Share, please!
just make sure GOOD_DISK is one of the remaining and BAD_DISK is the
repalcement drive before uncomment the "exit"
and yeah, adjust how many raid-partitions are there
the first is my homeserver with 3 filesystems (boot, system, data), the
second one is a RAID10 on a HP microserver with the OS on a sd-card
---------------------------------------------------------------------
DOS:
[root@srv-rhsoft:~]$ cat /scripts/raid-recovery.sh
#!/usr/bin/bash
GOOD_DISK="/dev/sda"
BAD_DISK="/dev/sdd"
echo "NOT NOW"
exit 1
# clone MBR
dd if=$GOOD_DISK of=$BAD_DISK bs=512 count=1
# force OS to read partition tables
partprobe $BAD_DISK
# start RAID recovery
mdadm /dev/md0 --add ${BAD_DISK}1
mdadm /dev/md1 --add ${BAD_DISK}2
mdadm /dev/md2 --add ${BAD_DISK}3
# print RAID status on screen
sleep 5
cat /proc/mdstat
# install bootloader on replacement disk
grub2-install "$BAD_DISK"
---------------------------------------------------------------------
GPT:
[root@nfs:~]$ cat /scripts/raid-recovery.sh
#!/usr/bin/bash
GOOD_DISK="/dev/sda"
BAD_DISK="/dev/sde"
echo "NOT NOW"
exit 1
echo "sgdisk $GOOD_DISK -R $BAD_DISK"
sgdisk $GOOD_DISK -R $BAD_DISK
echo "sgdisk -G $BAD_DISK"
sgdisk -G $BAD_DISK
echo "sleep 5"
sleep 5
echo "partprobe $BAD_DISK"
partprobe $BAD_DISK
echo "sleep 5"
sleep 5
echo "mdadm /dev/md0 --add ${BAD_DISK}1"
mdadm /dev/md0 --add ${BAD_DISK}1
echo "sleep 5"
sleep 5
echo "cat /proc/mdstat"
cat /proc/mdstat
---------------------------------------------------------------------
