Help I cant back up

[sohail]

I used this helper script to create a LXC for PBS.

https://helper-scripts.com/scripts?id=Proxmox+Backup+Server

I wanted to write my backups to my NAS so I used this guide to pass though my NAS drive to the LXC which is mounted to /mnt/nas_pbs

https://github.com/JamesTurland/JimsGarage/tree/main/LXC/NAS

I can see and write to the NAS drive in the PBS Shell, I have also added it as a data store and the .chunks and .locks were created.

I then connected PBS to my PVE and i can see it as data store.

when i go to a Container and click on backup it errors and fails. below is the error

INFO: starting new backup job: vzdump 101 --remove 0 --mode snapshot --storage backup --notes-template '{{guestname}}' --notification-mode auto --node pve
INFO: Starting Backup of VM 101 (lxc)
INFO: Backup started at 2024-05-30 12:13:23
INFO: status = running
vm 101 - unable to parse value of 'usb0' - unknown setting 'usb0'
vm 101 - unable to parse value of 'usb1' - unknown setting 'usb1'
INFO: CT Name: frigate
INFO: including mount point rootfs ('/') in backup
INFO: excluding bind mount point mp0 ('recordings') from backup (not a volume)
INFO: mode failure - some volumes do not support snapshots
INFO: trying 'suspend' mode instead
INFO: backup mode: suspend
INFO: ionice priority: 7
INFO: CT Name: frigate
INFO: including mount point rootfs ('/') in backup
INFO: excluding bind mount point mp0 ('recordings') from backup (not a volume)
INFO: starting first sync /proc/3111/root/ to /var/tmp/vzdumptmp91735_101
INFO: first sync finished - transferred 4.06G bytes in 12s
INFO: suspending guest
INFO: starting final sync /proc/3111/root/ to /var/tmp/vzdumptmp91735_101
INFO: final sync finished - transferred 405.07K bytes in 2s
INFO: resuming guest
INFO: guest is online again after 2 seconds
INFO: creating Proxmox Backup Server archive 'ct/101/2024-05-30T11:13:23Z'
INFO: set max number of entries in memory for file-based backups to 1048576
INFO: run: /usr/bin/proxmox-backup-client backup --crypt-mode=none pct.conf:/var/tmp/vzdumptmp91735_101/etc/vzdump/pct.conf root.pxar:/var/tmp/vzdumptmp91735_101 --include-dev /var/tmp/vzdumptmp91735_101/. --skip-lost-and-found --exclude=/tmp/?* --exclude=/var/tmp/?* --exclude=/var/run/?*.pid --backup-type ct --backup-id 101 --backup-time 1717067603 --entries-max 1048576 --repository root@pam@192.168.1.146:proxmox_backup
INFO: Starting backup: ct/101/2024-05-30T11:13:23Z
INFO: Client name: pve
INFO: Starting backup protocol: Thu May 30 12:13:37 2024
INFO: No previous manifest available.
INFO: Upload config file '/var/tmp/vzdumptmp91735_101/etc/vzdump/pct.conf' to 'root@pam@192.168.1.146:8007:proxmox_backup' as pct.conf.blob
INFO: Error: fchmod "/mnt/nas_pbs/ct/101/2024-05-30T11:13:23Z/pct.conf.tmp_Unj1Xt" failed: EPERM: Operation not permitted
vm 101 - unable to parse value of 'usb0' - unknown setting 'usb0'
vm 101 - unable to parse value of 'usb1' - unknown setting 'usb1'
vm 101 - unable to parse value of 'usb0' - unknown setting 'usb0'
vm 101 - unable to parse value of 'usb1' - unknown setting 'usb1'
ERROR: Backup of VM 101 failed - command '/usr/bin/proxmox-backup-client backup '--crypt-mode=none' pct.conf:/var/tmp/vzdumptmp91735_101/etc/vzdump/pct.conf root.pxar:/var/tmp/vzdumptmp91735_101 --include-dev /var/tmp/vzdumptmp91735_101/. --skip-lost-and-found '--exclude=/tmp/?*' '--exclude=/var/tmp/?*' '--exclude=/var/run/?*.pid' --backup-type ct --backup-id 101 --backup-time 1717067603 --entries-max 1048576 --repository root@pam@192.168.1.146:proxmox_backup' failed: exit code 255
INFO: Failed at 2024-05-30 12:13:40
INFO: Backup job finished with errors
INFO: notified via target `mail-to-root`
TASK ERROR: job errors

I can not get it to back up any container where am i going wrong?

here is the LXC config.

GNU nano 7.2 /etc/pve/lxc/109.conf
#<div align='center'><a href='https%3A//Helper-Scripts.com' target='_blank' rel='noopener noreferrer'><img src='https%3A//raw.githubuserco>
#
# # PBS LXC
#
# <a href='https%3A//ko-fi.com/D1D7EP4GF'><img src='https%3A//img.shields.io/badge/&#x2615;-Buy me a coffee-blue' /></a>
# </div>
#
#http%3A//192.168.1.146%3A8007
arch: amd64
cores: 4
features: keyctl=1,nesting=1
hostname: proxbackserv
memory: 4096
mp0: /mnt/pve/nas_pbs/,mp=/mnt/nas_pbs
net0: name=eth0,bridge=vmbr0,hwaddr=BC:24:11:49:02:84,ip=dhcp,type=veth
onboot: 1
ostype: debian
rootfs: nvme-2tb:109/vm-109-disk-0.raw,size=10G
swap: 512
tags: proxmox-helper-scripts
unprivileged: 1

 

[ggoller]

Hi!
it looks like you don't have the correct permissions to change the permission bits of the file (https://man7.org/linux/man-pages/man3/fchmod.3p.html).
Could you check the owners and permissions of the files in /mnt/nas_pbs? Is the owner of the files `backup:backup`?

There is also an issue with the commands in the second link you provided:
- cifs doesn't have a noatime option AFAIK and noatime also does not work with the PBS Garbage Collection. So you have to remove `noatime` (https://pbs.proxmox.com/docs/backup-client.html#garbage-collection).
- check that the uid/gid parameters are the `backup` user and `backup` group used by PBS.

 

[sohail]

Hi!
it looks like you don't have the correct permissions to change the permission bits of the file (https://man7.org/linux/man-pages/man3/fchmod.3p.html).
Could you check the owners and permissions of the files in /mnt/nas_pbs? Is the owner of the files `backup:backup`?

There is also an issue with the commands in the second link you provided:
- cifs doesn't have a n

thanks for taking a look so here is what my permissions look like. its not backup backup as you have said what could i have done wrong?

root@pbs:/mnt/nas_pbs# ls -la
total 4
drwxrwx--- 2 root nas_pbs 0 May 31 23:36 .
drwxr-xr-x 3 root root 4096 May 31 15:28 ..
drwxrwx--- 2 root nas_pbs 0 May 31 18:10 .chunks
-rwxrwx--- 1 root nas_pbs 0 May 31 15:30 .lock
drwxrwx--- 2 root nas_pbs 0 May 31 23:36 ct

 

[Dunuin]

Also keep in mind that PBS was designed to be run bare metal with local SSD storage. Neither LXC nor datastore on a NAS nor running it on HDDs is great. If you really need to use a NAS, I would recommend to at least use a PBS VM and then directly mount a NFS share inside the VM. This should be less prone to break.

 

[ggoller]

What Dunuin said is correct, so you will likely have bad performance.

Try to change the owner of all files to `backup:backup` (e.g. using chown) and try again.