Can you please run df -h and pastebin the results somewhere? I highly doubt it's this issue, but I could be wrong.
After that, could you please share your global and share configuration for CIFS please?
I am having the same problem after upgrading from 8.0.2 to 8.0.3 and get the same console messages as the OP. I can see my shared folders but get a network resource unavailable message when trying to open them.
The output of df -h is below
Filesystem Size Used Avail Capacity Mounted on
/dev/ufs/FreeNASs1a 927M 353M 499M 41% /
devfs 1.0K 1.0K 0B 100% /dev
/dev/md0 4.6M 1.9M 2.3M 44% /etc
/dev/md1 824K 2.5K 756K 0% /mnt
/dev/md2 149M 9.5M 128M 7% /var
/dev/ufs/FreeNASs4 20M 707K 18M 4% /data
Disk1 145G 4.4G 140G 3% /mnt/Disk1
Disk2 71G 23K 71G 0% /mnt/Disk2
/dev/md3 1.0G 936K 926M 0% /var/tmp/.cache
Global CIFS config is
Authentication model Local User
Netbios name FREENAS
Workgroup Workgroup
Description FreeNAS server
DOS Charset CP437
unix charset UTF-8
Log level minimum
local master unchecked
time server for domain unchecked
Guest account nobody
allow guest access checked
allow only guest access unchecked
file mask empty
directory mask empty
large rw support checked
send files with sendfile(2) checked
ea support unchecked
support dos file attributed checked
allow empty password unchecked
auxiliary parameters empty
enable home directories checked
enable home directories browsing unchecked
home directories /mnt/Disk2
Minimum AIO read size 1
Minimum AIO write size 1
Zeroconf share discovery unchecked
Share configuration is
Name Share2
comment empty
Path /mnt/Disk2
Export read only unchecked
Browsable to network clients checked
inherit owner unchecked
inherit permissions unchecked
export recycle bin unchecked
show hidden files unchecked
guest account nobody
allow guest access checked
allow only guest access unchecked
hosts allow empty
hosts deny empty
auxiliary parameters empty
Storage permissions are set to allow read, write and execute by everyone.
Thanks in advance for any help you can offer.