proxmox-backup-client backup stops at gvfsd-fuse mount - exclude does not apply

[florian.schroen]

Hi,

I freshly installed PBS on top of my existing Homeserver/Fileserver and try to backup my users home dirs, which exits while creating the file list for backup.

homeserver:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux 10 (buster)
Release:        10
Codename:       buster

homeserver:~$ dpkg -l | grep proxmox-ba
ii  libproxmox-backup-qemu0                  1.1.0-1                                 amd64        Proxmox Backup Server client library for QEMU
ii  proxmox-backup-client                    1.1.13-2                                amd64        Proxmox Backup Client tools
ii  proxmox-backup-docs                      1.1.13-2                                all          Proxmox Backup Documentation
ii  proxmox-backup-file-restore              1.1.13-2                                amd64        Proxmox Backup single file restore tools for pxar and block device backups
ii  proxmox-backup-restore-image             0.2.3                                   amd64        Kernel/initramfs images for Proxmox Backup single-file restore.
ii  proxmox-backup-server                    1.1.13-3                                amd64        Proxmox Backup Server daemon with tools and GUI

homeserver:~$ df -h /home/florian
Filesystem                   Size  Used Avail Use% Mounted on
/dev/mapper/fileserver-data  3.2T  3.1T  146G  96% /srv/fileserver-data

homeserver:~$ proxmox-backup-client backup home_florian.pxar:/home/florian --repository 'root@pam!homeserver-backup@localhost:usbpool-pbs'
Starting backup: host/homeserver/2022-04-30T12:44:07Z
Client name: homeserver
Starting backup protocol: Sat Apr 30 14:44:07 2022
Downloading previous manifest (Fri Apr 29 19:41:07 2022)
Upload directory '/home/florian' to 'root@pam!homeserver-backup@localhost:8007:usbpool-pbs' as home_florian.pxar.didx
catalog upload error - channel closed
Error: stat failed on ".gvfs": EACCES: Permission denied
homeserver:~$

I don't know exactly where this mount is coming from or what to remove to get rid of this.
I guess ist from lxdm or something similar.
And it seems dependent to this thread https://forum.proxmox.com/threads/odd-directory-that-cannot-be-stat-ed-by-root.103727/

homeserver[255]:~$ ls -la /home/florian/.gvfs
ls: cannot access '/home/florian/.gvfs': Permission denied

homeserver[2]:~$ mount | grep .gvfs
gvfsd-fuse on /srv/fileserver-data/home/florian/.gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=1101,group_id=1101)

homeserver:~$ sudo -u florian ls -la /home/florian/.gvfs
total 4
dr-x------   2 florian florian     0 Apr 29 19:12 .
drwxr-x--- 115 florian www-data 4096 Apr 29 19:12 ..
homeserver:~$

So I tried to apply an exclude rule. Besides there is no clear example how to exclude a path, I searched the source code and guessed a few variants without success.

homeserver:~$ proxmox-backup-client backup home_florian.pxar:/home/florian --repository 'root@pam!homeserver-backup@localhost:usbpool-pbs' --exclude ".gvfs"
Starting backup: host/homeserver/2022-04-30T12:51:09Z
Client name: homeserver
Starting backup protocol: Sat Apr 30 14:51:09 2022
Downloading previous manifest (Fri Apr 29 19:41:07 2022)
Upload directory '/home/florian' to 'root@pam!homeserver-backup@localhost:8007:usbpool-pbs' as home_florian.pxar.didx
catalog upload error - channel closed
Error: stat failed on ".gvfs": EACCES: Permission denied
homeserver[255]:~$ proxmox-backup-client backup home_florian.pxar:/home/florian --repository 'root@pam!homeserver-backup@localhost:usbpool-pbs' --exclude '[".*\.gvfs.*"]'
Starting backup: host/homeserver/2022-04-30T12:51:59Z
Client name: homeserver
Starting backup protocol: Sat Apr 30 14:51:59 2022
Downloading previous manifest (Fri Apr 29 19:41:07 2022)
Upload directory '/home/florian' to 'root@pam!homeserver-backup@localhost:8007:usbpool-pbs' as home_florian.pxar.didx
Error: stat failed on ".gvfs": EACCES: Permission denied
homeserver[255]:~$

So I guess the exclude will be applied after creating the file list (file stat)?
Or I made a mistake with the exclude syntax?

Can someone please verify my findings and point me to the right direction or a workaround?

Thank you very much.
Best Florian

p.s. after logging out user florian completely the fuse mount has been removed and the folder is accessible by root (and the backup-process):

homeserver:~$ ls -la ~florian/.gvfs/
total 8
drwx------   2 florian florian  4096 Jun 21  2012 .
drwxr-x--- 115 florian www-data 4096 Apr 30 22:16 ..

So the question is now: howto exclude this dir from backup to prevent backup abort for all backup-specs/-location when user is logged in.
thx.

 

[ggoller]

Hi Florian,
try creating a .pxarexclude file, so that the file in question is ignored (https://pbs.proxmox.com/docs/backup-client.html#excluding-files-directories-from-a-backup). If stat fails, that means the folder where the ".gvfs" file resides is inaccessible for proxmox. Simply put a .pxarexclude file with the name of the parent folder in the same directory and you should be set.
Gabriel

 

[cjdnad]

Exactly what is happening with me after upgrading to 8 but with a smb mnt. Worked fine on 7.4
I posted a thread earlier

Even after remove the smb mnt I get the same error.

catalog upload error - channel closed
Error: error at "mnt/pve/proxmox_backups_Edrive_Rzyen": failed to read xattrs: EACCES: Permission denied

 

[cjdnad]

ah seems mine is working now with exclude!

--exclude "mnt/pve/proxmox_backups_Edrive_Rzyen"

I understood by default it excludes all /mnt/pve but doesn't in mine case