Snapshot Backup macht Probleme bei einem Windows-Gast-System

degenhardt

Active Member
May 9, 2013
14
0
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Hi everybody, to be honest, I am a little bit adviceless. We have a Proxmox running under 2.3-13 (upgraded from 2.1 recently). Running/administration is running fine.
The engine resides two Windows-2008 R2 server. One as a test-server, the other in production mode.
We do snapshot backups. One (Testserver) snapshot is working without any problems, the other has to be stopped in a hard way killing the process.
On the guest machine, the network seems to be unresponsive. I can't even RDP anymore.
Difference between the two:
testserver: image itself is located on a NAS-server
production-server: image itself is located on the proxmox host
Could it be that this is causing s.th. ? Did anyone had any similar experiences ? I would be thankful for any idea !

(German-version)
Hallo ! Wenn ich ehrlich bin, bin ich z.Z. ein wenig ratlos. Wir haben seit ca. einem knappen Jahr Proxmox 2.3-13 (vorher 2.1 vor kurzem upgegraded) laufen.
Der laufende Betrieb klappt problemlos. Es befinden sich zwei Windows 2008 R2 Server (Std. Edition) im Einsatz. Einer im reinen Testbetrieb und der andere im Produktiv-Betrieb.
Bei dem einen klappt der Snapshot Backup via Proxmox problemlos, bei dem anderen kann ich mich per RDP sobald das Backup beginnt nicht mehr verbinden. Es sieht so aus, als wäre
die Netzwerkverbindung weg. Das ist dummerweise
die Produktivmaschine. Das macht es schwierig, da ich dann Änderungen/Troubleshooting-Ideen nur einmal monatlich im Wartungsfenster testen kann. (Will den Produktiv-Betrieb nicht stören).
Hat jmd. eine Idee, in welchen Logfiles ich noch schauen kann ? In den Proxmox-Standardlogfiles fand ich nichts auffälliges. Wenn der Backup läuft muss ich den Backup-Prozess hart
beenden, da sonst der Server eben nicht mehr erreichbar ist. Unterschiede Testserver/Produktiv-Server:

Testserver: Image zum Betrieb läuft nicht auf dem Proxmox-Server selber, sondern auf einem NAS-Server
Produktivserver: Hier liegt das Image lokal auf dem Proxmox-Host.

Könnte das irgendeinen Einfluss haben ? Hat jmd. schonmal vergleichbares gehabt ? Bin für jeden Hinweis dankbar.
 
Last edited:
Hi du musst in englisch schreiben sonst bekommst du leider keine Antwort.

Hi, you must write in english, please. It´s only a english support forum for international. thanks

regards
 
Hi everybody, to be honest, I am a little bit adviceless. We have a Proxmox running under 2.3-13 (upgraded from 2.1 recently). Running/administration is running fine.
The engine resides two Windows-2008 R2 server. One as a test-server, the other in production mode.
We do snapshot backups. One (Testserver) snapshot is working without any problems, the other has to be stopped in a hard way killing the process.
On the guest machine, the network seems to be unresponsive. I can't even RDP anymore.
Difference between the two:
testserver: image itself is located on a NAS-server
production-server: image itself is located on the proxmox host
Could it be that this is causing s.th. ? Did anyone had any similar experiences ? I would be thankful for any idea !
...

Hi,
do you have enough free space in the VG for the snapshot?
It's can be also an IO-Problem - which volume do you use as backup target? Are the target on the same hdds like the local storage?

Can you post the following cammand output?
Code:
pvs
vgs
lvs
cat /etc/pve/storage.cfg
Udo
 
Hi Udo, thank you. These are the outputs.
The backup-target is another backup-NAS-server in another network. (But I tried it already with a second box without any
changes). The target is not on the same hdd like the local storage.


pvs is: root@proxmox:/home/something # pvs
PV VG Fmt Attr PSize PFree
/dev/sda2 pve lvm2 a-- 110.32g 13.75g
vgs:
VG #PV #LV #SN Attr VSize VFree
pve 1 3 0 wz--n- 110.32g 13.75g
lvs:
LV VG Attr LSize Pool Origin Data% Move Log Copy% Convert
data pve -wi-ao-- 62.08g
root pve -wi-ao-- 27.50g
swap pve -wi-ao-- 7.00g

cat /etc/pve/storage.cfg
dir: local
path /var/lib/vz
content images,iso,vztmpl,rootdir
maxfiles 0

iscsi: nexsan_storage
target xxx.xxx.xxx.xxx
content images
nodes proxmox

nfs: backup_proxmox
path /mnt/pve/backup_proxmox
server xxx.xxx.xxx.xxx
export /raid0/data/_NAS_NFS_Exports_/NFS
options vers=3
content images,backup
nodes proxmox
maxfiles 1

nfs: backup_synology
path /mnt/pve/backup_synology
server xxx.abc.de
export /volume1/proxmox-something
options vers=3
content images,backup
nodes proxmox
maxfiles 1
 
The server doesn't use the same hdds for local storage and backup. I was trying to post the pvs,vgs output but couldn't. ?
 
root@proxmox:/home/someone# cat /etc/pve/storage.cfg
dir: local
path /var/lib/vz
content images,iso,vztmpl,rootdir
maxfiles 0

iscsi: nexsan
target xxx
portal xxx
content images
nodes proxmox

nfs: backup_proxmox
path /mnt/pve/backup_proxmox
server xxx
export /raid0/data/_NAS_NFS_Exports_/NFS
options vers=3
content images,backup
nodes proxmox
maxfiles 1

nfs: backup_synology
path /mnt/pve/backup_synology
server abc.abc.de
export /volume1/proxmox1
options vers=3
content images,backup
nodes proxmox
maxfiles 1
 
Hi Udo, thank you. These are the outputs.
The backup-target is another backup-NAS-server in another network. (But I tried it already with a second box without any
changes). The target is not on the same hdd like the local storage.


pvs is: root@proxmox:/home/something # pvs
PV VG Fmt Attr PSize PFree
/dev/sda2 pve lvm2 a-- 110.32g 13.75g
vgs:
VG #PV #LV #SN Attr VSize VFree
pve 1 3 0 wz--n- 110.32g 13.75g
lvs:
LV VG Attr LSize Pool Origin Data% Move Log Copy% Convert
data pve -wi-ao-- 62.08g
root pve -wi-ao-- 27.50g
swap pve -wi-ao-- 7.00g

...
Hi,
looks ok.
How big is your production-server? Have you tried to do an backup to an local directory (on the root-filesystem if enough space there)?
Is the NAS connected via an seperate NIC, or the same NIC as used for the RDP-Session?


Udo
 
Thank you.
The production server is 30 GB. The test-server is 50 GB.
The server does have a second NIC. I could try the other LAN-interface. Indeed.
I will give it a try when I am at the data-center the next time.
 

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