Mounting hdd: Difference between revisions
From wikiluntti
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== LVM 2== | == LVM 2== | ||
<pre> | |||
sudo vgscan | |||
sudo vgchange -ay ubuntu-vg | |||
sudo lvs | |||
sudo mount /dev/ubuntu-vg/lvstuff /media/mol -o ro,user | |||
</pre> | |||
== Mount lv2m == | == Mount lv2m == | ||
Revision as of 19:24, 4 December 2021
RAID
cat /proc/mdstat
mdadmLVM 2
sudo vgscan sudo vgchange -ay ubuntu-vg sudo lvs sudo mount /dev/ubuntu-vg/lvstuff /media/mol -o ro,user
Mount lv2m
https://superuser.com/questions/116617/how-to-mount-an-lvm-volume
Note that the mounting option needs to be read/write: $ sudo mount /dev/VolGroup00/LogVol00 /mnt/fcroot -o rw,user
LVM2 (logical volume manager)
vgdisplay
vgrename
vgchange
vgs
lvscanPV (physical volume)
pvcreateQNAP NAS
Raid levels. I have multiple HDD with different sizes, and need to add more hdds if needed.
- RAID 0 (striping) but losing any disk means losing all the data.
- RAID 1 (mirroring). All hdds should be identical.
- RAID 5 (parity striping) but requires at least 3 drives (which I have).
https://en.wikipedia.org/wiki/Standard_RAID_levels
How to convert RAID 0 to RAID 5 without losing any data?
