Cannot perform KVM backup after setting up new node

[drzoidberg33]

Yesterday I completed my backups then set up a new node (was only using one node up till then). Now when I try to live backup my KVM VM I get these errors:

[FONT=tahoma]INFO: starting new backup job: vzdump 108 --remove 0 --mode snapshot --compress lzo --node proxmox0 --storage backups
INFO: Starting Backup of VM 108 (qemu)
INFO: status = running
INFO: update VM 108: -lock backup
INFO: unable to open file '/etc/pve/nodes/proxmox0/qemu-server/108.conf.tmp.574943' - Permission denied
ERROR: Backup of VM 108 failed - command 'qm set 108 --lock backup' failed: exit code 2
INFO: Backup job finished with errors
TASK ERROR: job errors
[/FONT]

This is my 108 conf:

bootdisk: ide0
cores: 4
cpu: host
ide0: disk2:108/vm-108-disk-1.qcow2,format=qcow2,size=500G
ide2: none,media=cdrom
memory: 8192
name: win-server
net0: e1000=76:6C:03:8D:91:B7,bridge=vmbr0
ostype: win7
sockets: 1

Here are the permissions on this folder, doesn't look like anything out of the ordinary to me:

dr-xr-x--- 2 root www-data   0 Feb  4 13:10 .
dr-xr-x--- 2 root www-data   0 Feb  4 13:10 ..
-r--r----- 1 root www-data 213 Mar  6 03:23 102.conf
-r--r----- 1 root www-data 209 Mar  5 09:40 104.conf
-r--r----- 1 root www-data 213 Mar  7 11:54 108.conf

My second node is currently offline, could this cause an issue? Nothing else has changed since the last successful backup.

Any ideas?

TIA

 

[m.ardito]

Yesterday I completed my backups then set up a new node (was only using one node up till then). Now when I try to live backup my KVM VM I get these errors:
...
My second node is currently offline, could this cause an issue? Nothing else has changed since the last successful backup.

yes, when you have a cluster, you need quorum to have full operativity.
since your other node is offline, your 2 node cluster has lost quorum, and pve protects things putting /etc/pve in read mode
and most operations are locked . That's why is not recommended to have a 2 node cluster.

until your second node comes up, you can temporarily regain quorum issuing this command

#pvecm expected 1
then you will be able to work normally

that is valid until rebooot or cluster regain quorum (if the other node comes up)

Marco

 

[drzoidberg33]

Many thanks for explaining so clearly. Will bring the second node up.

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