Working on logs
Yes, all via GUI.
root@Proxmox-VE ~ # pveversion -v
proxmox-ve: 6.2-2 (running kernel: 5.4.60-1-pve)
pve-manager: 6.2-11 (running version: 6.2-11/22fb4983)
pve-kernel-5.4: 6.2-6
pve-kernel-helper: 6.2-6
pve-kernel-5.4.60-1-pve: 5.4.60-2
ceph-fuse: 12.2.11+dfsg1-2.1+b1
corosync: 3.0.4-pve1
criu: 3.11-3
glusterfs-client: 5.5-3
ifupdown: residual config
ifupdown2: 3.0.0-1+pve2
libjs-extjs: 6.0.1-10
libknet1: 1.16-pve1
libproxmox-acme-perl: 1.0.5
libpve-access-control: 6.1-2
libpve-apiclient-perl: 3.0-3
libpve-common-perl: 6.2-2
libpve-guest-common-perl: 3.1-3
libpve-http-server-perl: 3.0-6
libpve-storage-perl: 6.2-6
libqb0: 1.0.5-1
libspice-server1: 0.14.2-4~pve6+1
lvm2: 2.03.02-pve4
lxc-pve: 4.0.3-1
lxcfs: 4.0.3-pve3
novnc-pve: 1.1.0-1
proxmox-mini-journalreader: 1.1-1
proxmox-widget-toolkit: 2.2-12
pve-cluster: 6.1-8
pve-container: 3.2-1
pve-docs: 6.2-5
pve-edk2-firmware: 2.20200531-1
pve-firewall: 4.1-2
pve-firmware: 3.1-3
pve-ha-manager: 3.1-1
pve-i18n: 2.2-1
pve-qemu-kvm: 5.1.0-2
pve-xtermjs: 4.7.0-2
qemu-server: 6.2-14
smartmontools: 7.1-pve2
spiceterm: 3.1-1
vncterm: 1.6-2
root@Proxmox-VE ~ # cat /etc/pve/storage.cfg
dir: local
path /var/lib/vz
content rootdir,vztmpl,images,snippets,iso
maxfiles 0
dir: backup
path /backup/prox
content iso,backup
maxfiles 2
shared 0
Here are the last few lines from "journalctl | grep STORAGENAME -C 3", it is long and dates back to December..
Mar 02 13:09:24 Proxmox-VE pvestatd[1005]: mkdir /backup: File exists at /usr/share/perl5/PVE/Storage/DirPlugin.pm line 108.
Mar 02 13:09:34 Proxmox-VE pvestatd[1005]: mkdir /backup: File exists at /usr/share/perl5/PVE/Storage/DirPlugin.pm line 108.
Mar 02 13:09:44 Proxmox-VE pvestatd[1005]: mkdir /backup: File exists at /usr/share/perl5/PVE/Storage/DirPlugin.pm line 108.
Mar 02 13:09:55 Proxmox-VE pvestatd[1005]: mkdir /backup: File exists at /usr/share/perl5/PVE/Storage/DirPlugin.pm line 108.
Mar 02 13:10:04 Proxmox-VE pvestatd[1005]: mkdir /backup: File exists at /usr/share/perl5/PVE/Storage/DirPlugin.pm line 108.
SYSLOG
Mar 2 13:16:44 Proxmox-VE kernel: [13716930.881769] CIFS VFS: \\u123456.your-storagebox.de Send error in SessSetup = -13
Mar 2 13:16:44 Proxmox-VE kernel: [13716931.220515] Status code returned 0xc000006d NT_STATUS_LOGON_FAILURE
Thing is, the login info is correct.