Hello,
On 2017-04-19 09:11, tv.deb...@googlemail.com wrote:
System on usb flash disks always caused me troubles, I use it only if
the system can be loaded in ram at boot time and the drive isn't used
for write operation. A low-end small SSD would be a far better option
in my opinion.
Thanks for the advice. I managed to find a 40 Go Intel SSD, for under
30€ :)
On 2017-04-19 15:06, Joshua Schaeffer wrote:
I can't speak to your system being on USB, but in general you can just
do something like the following:
$mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sda
/dev/sdb
$mdadm --create /dev/md1 --level=1 --raid-devices=2 /dev/sdc
/dev/sdd
$mdadm --create /dev/md2 --level=1 --raid-devices=2 /dev/sde
/dev/sdf
If you want to use LVM then you create the PV, VG, and LV:
$pvcreate /dev/md0
$pvcreate /dev/md1
$pvcreate /dev/md2
$vgcreate vg_data1 /dev/md0
$vgcreate vg_data2 /dev/md1
$vgcreate vg_data3 /dev/md2
$lvcreate vg_data1 -n lv_data1 -L <size>
$lvcreate vg_data2 -n lv_data2 -L <size>
$lvcreate vg_data3 -n lv_data3 -L <size>
Then create your LUKS partition:
$cryptsetup -v --verify-passphrase luksFormat /dev/mapper/lv_data1
vg_data1-lv_data1_crypt
$cryptsetup -v --verify-passphrase luksFormat /dev/mapper/lv_data2
vg_data2-lv_data2_crypt
$cryptsetup -v --verify-passphrase luksFormat /dev/mapper/lv_data3
vg_data3-lv_data3_crypt
Then create your filesystem and mount them:
$mkfs.ext4 /dev/mapper/vg_data1-lv_data1_crypt
$mkfs.ext4 /dev/mapper/vg_data2-lv_data2_crypt
$mkfs.ext4 /dev/mapper/vg_data3-lv_data3_crypt
$mount -t ext4 /dev/mapper/vg_data1-lv_data1_crypt /mnt/data1
$mount -t ext4 /dev/mapper/vg_data2-lv_data2_crypt /mnt/data2
$mount -t ext4 /dev/mapper/vg_data3-lv_data3_crypt /mnt/data3
Thank you for the detailed explanations.
I'm a complete noob when it comes to this kind of operations, so, sorry
for the dumb question : following tv.debian@'s advises, I purchased a
cheap SSD and installed my system on it (the SSD, and one pair of HDD
are plugged in). From there on, how should I proceed ?
Thanks in advanced for your help.
CA