[PVE-User] NFS Storage issue

[Gerald Brandt]

Hi,

I have a Synology with High Availability serving NFS storage to Proxmox. 
A couple of months ago, this started happening:

Apr 24 12:32:51 proxmox-1 pvestatd[3298]: unable to activate storage 
'NAS' - directory '/mnt/pve/NAS' does not exist or is unreachable
Apr 24 13:08:00 proxmox-1 pvestatd[3298]: unable to activate storage 
'NAS' - directory '/mnt/pve/NAS' does not exist or is unreachable

It affecting backups and VM speeds. Any idea what is causing this? There 
are no errors in the Synology logs, and the storage stays mounted and 
accessible.

Any ideas what's going on?

# pveversion --verbose
proxmox-ve: 5.4-1 (running kernel: 4.15.18-12-pve)
pve-manager: 5.4-3 (running version: 5.4-3/0a6eaa62)
pve-kernel-4.15: 5.3-3
pve-kernel-4.15.18-12-pve: 4.15.18-35
pve-kernel-4.15.18-11-pve: 4.15.18-34
pve-kernel-4.15.18-10-pve: 4.15.18-32
pve-kernel-4.15.18-7-pve: 4.15.18-27
pve-kernel-4.15.18-5-pve: 4.15.18-24
pve-kernel-4.15.18-4-pve: 4.15.18-23
pve-kernel-4.15.17-3-pve: 4.15.17-14
pve-kernel-4.13.13-6-pve: 4.13.13-42
pve-kernel-4.13.13-4-pve: 4.13.13-35
pve-kernel-4.13.13-2-pve: 4.13.13-33
pve-kernel-4.13.4-1-pve: 4.13.4-26
corosync: 2.4.4-pve1
criu: 2.11.1-1~bpo90
glusterfs-client: 3.8.8-1
ksm-control-daemon: 1.2-2
libjs-extjs: 6.0.1-2
libpve-access-control: 5.1-8
libpve-apiclient-perl: 2.0-5
libpve-common-perl: 5.0-50
libpve-guest-common-perl: 2.0-20
libpve-http-server-perl: 2.0-13
libpve-storage-perl: 5.0-41
libqb0: 1.0.3-1~bpo9
lvm2: 2.02.168-pve6
lxc-pve: 3.1.0-3
lxcfs: 3.0.3-pve1
novnc-pve: 1.0.0-3
proxmox-widget-toolkit: 1.0-25
pve-cluster: 5.0-36
pve-container: 2.0-37
pve-docs: 5.4-2
pve-edk2-firmware: 1.20190312-1
pve-firewall: 3.0-19
pve-firmware: 2.0-6
pve-ha-manager: 2.0-9
pve-i18n: 1.1-4
pve-libspice-server1: 0.14.1-2
pve-qemu-kvm: 2.12.1-3
pve-xtermjs: 3.12.0-1
qemu-server: 5.0-50
smartmontools: 6.5+svn4324-1
spiceterm: 3.0-5
vncterm: 1.5-3
zfsutils-linux: 0.7.13-pve1~bpo2


Storage conf file:

# cat /etc/pve/storage.cfg
dir: local
     path /var/lib/vz
     content vztmpl,backup,iso

zfspool: local-zfs
     pool rpool/data
     content rootdir,images
     sparse 1

nfs: NAS
     export /volume1/Storage
     path /mnt/pve/NAS
     server 192.168.50.100
     content images,vztmpl,rootdir,iso,backup
     maxfiles 2
     options vers=3,async,noatime,fsc,nodiratime

nfs: weekly_snapshots
     export /volume2/weekly_snapshots
     path /mnt/pve/weekly_snapshots
     server 192.168.50.100
     content backup
     maxfiles 1
     options vers=3

nfs: daily_snapshots
     export /volume2/daily_snapshots
     path /mnt/pve/daily_snapshots
     server 192.168.50.100
     content backup
     maxfiles 3
     options vers=3