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# Penguin2 RAID 5
# Tags
* assigned: @fredm, @pjotrp
* status: in progress
# Description
The current RAID contains 3 disks:
```
root@penguin2:~# cat /proc/mdstat
md0 : active raid5 sdb1[1] sda1[0] sdg1[4]
/dev/md0 33T 27T 4.2T 87% /export
```
using /dev/sda,sdb,sdg
The current root and swap is on
```
# root
/dev/sdd1 393G 121G 252G 33% /
# swap
/dev/sdd5 partition 976M 76.5M -2
```
We can therefore add four new disks in slots /dev/sdc,sde,sdf,sdh
penguin2 has no out-of-band and no serial connector right now. That means any work needs to be done on the terminal.
Boot loader menu:
```
menuentry 'Debian GNU/Linux' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-7ff268df-cb90-4cbc-9d76-7fd6677b4964' {
load_video
insmod gzio
if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
insmod part_msdos
insmod ext2
set root='hd2,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd2,msdos1 --hint-efi=hd2,msdos1 --hint-baremetal=ahci2,msdos1 7ff268df-cb90-4cbc-9d76-7fd6677b4964
else
search --no-floppy --fs-uuid --set=root 7ff268df-cb90-4cbc-9d76-7fd6677b4964
fi
echo 'Loading Linux 5.10.0-18-amd64 ...'
linux /boot/vmlinuz-5.10.0-18-amd64 root=UUID=7ff268df-cb90-4cbc-9d76-7fd6677b4964 ro quiet
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-5.10.0-18-amd64
}
```
Added to sdd MBR
```
root@penguin2:~# grub-install /dev/sdd
Installing for i386-pc platform.
Installation finished. No error reported.
```
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