Software RAID 1 ?

[Netizen]

Hello,

I understand that Proxmox 2 does not support Software RAID however I only realised that now, long after installing Proxmox using the image given from the DataCenter (Hetzner). Does this mean that the system is not protected against failure of either of the disks?

I am running WEBMIN for simple server admin functions and under the HARDWARE> Linux RAID menu I see this:
[SIZE=+2]---
Linux RAID[/SIZE]
Using MDADM version 3.1.4

Device name	Active?	RAID level	Usable size	Member disk devices
/dev/md0	Yes	Mirrored (RAID1)	511.99 MB	/dev/sda1 | /dev/sdb1
/dev/md1	Yes	Mirrored (RAID1)	1.46 TB	/dev/sda2 | /dev/sdb2
/dev/md2	Yes	Mirrored (RAID1)	1.17 TB	/dev/sda3 | /dev/sdb3

[SIZE=+2]---[/SIZE]

The system has 2 x 3TB hard drives.

I did nothing during the initial server setup apart from choosing the partitions.
Should I worry about it?

 

[udo]

Hi,
and what shows

mount
pvs
vgs
lvs

??

Udo

 

[Netizen]

mount

/dev/mapper/vg0-root on / type ext4 (rw)
tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
udev on /dev type tmpfs (rw,mode=0755)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620)
/dev/md0 on /boot type ext3 (rw)
/dev/mapper/vg0-backup on /backup type ext4 (rw)
/dev/mapper/vg0-data on /vz type ext4 (rw)
/dev/mapper/vg1-backup2 on /opt type ext4 (rw)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
/dev/fuse on /etc/pve type fuse (rw,nosuid,nodev,default_permissions,allow_other)
beancounter on /proc/vz/beancounter type cgroup (rw,name=beancounter)
container on /proc/vz/container type cgroup (rw,name=container)
fairsched on /proc/vz/fairsched type cgroup (rw,name=fairsched)



pvs

PV VG Fmt Attr PSize PFree
/dev/md1 vg0 lvm2 a-- 1.46t 99.00g
/dev/md2 vg1 lvm2 a-- 1.17t 1.07t


vgs

VG #PV #LV #SN Attr VSize VFree
vg0 1 4 0 wz--n- 1.46t 99.00g
vg1 1 1 0 wz--n- 1.17t 1.07t

lvs

LV VG Attr LSize Pool Origin Data% Move Log Copy% Convert
backup vg0 -wi-ao-- 200.00g
data vg0 -wi-ao-- 1.12t
root vg0 -wi-ao-- 20.00g
swap vg0 -wi-ao-- 34.00g
backup2 vg1 -wi-ao-- 100.00g

 

[udo]

mount

...
/dev/mapper/vg1-backup2 on /opt type ext4 (rw)

strange lv-naming for opt...

But this shows that all is protected due softwareraid.
backup on the same VG like the VMs is not optimal - you should better backup to /opt (but all on the same disk - the performance of an raid1 is not realy good, so perhaps it's equal).

Udo

 

[Netizen]

Thank you for the help. Much appreciated.

What will happen in the unfortunate event that the primary disk fail for some reason? Will the system auto-start from the healthy drive?
Excuse my ignorance but I am assuming that the OS would have taken care of those issues while setup. The OS of obvisouly aware that RAID1 exists, so how can I confirm what will happen (without taking the drive offline of course).
Do you know?

 

[udo]

Thank you for the help. Much appreciated.

What will happen in the unfortunate event that the primary disk fail for some reason? Will the system auto-start from the healthy drive?
Excuse my ignorance but I am assuming that the OS would have taken care of those issues while setup. The OS of obvisouly aware that RAID1 exists, so how can I confirm what will happen (without taking the drive offline of course).
Do you know?

Hi,
if the bootloader (grub) also installed on the second drive it's should work.

Udo