CIFS share not accessible thru specific lif

tech-trt18 — Mon, 19 Jan 2026 19:57:12 GMT

Hi guys, I got a really weird problem here...

I got a Netapp ontap 9 CIFS server with 4 lifs, on 3 VLANs:

NETAPP2::> network interface show -vserver CIFS_01
Logical Status Network Current Current Is
Vserver Interface Admin/Oper Address/Mask Node Port Home
----------- ---------- ---------- ------------------ ------------- ------- ----
CIFS_01
CIFS_01_av_conn_no2
up/up 10.18.0.201/21 NETAPP2-02 a0a-2 true
CIFS_01_bkp up/up 10.18.8.77/27 NETAPP2-01 a0a-61 true
CIFS_01_servers
up/up 10.18.2.200/21 NETAPP2-01 a0a-2 true
CIFS_01_usuarios
up/up 10.18.10.18/29 NETAPP2-02 a0a-5 true
4 entries were displayed.

I got clients on all 3 VLANs... Also, I got a number of shares...

After I did some volume moves, I had problems to access some shares, which I solved moving one of those lifs to another node (I think part of my current problem lies on this... still I can't figure it out...).

I got one specific share, "backup_conf", that it's volume is hosted on node 01:
NETAPP2::> vol show -volume share_backup_conf -fields node
vserver volume node
------- ----------------- ----------
CIFS_01 share_backup_conf NETAPP2-01

The share:

NETAPP2::> share show -share-name backup_conf -instance
(vserver cifs share show)

Vserver: CIFS_01
Share: backup_conf
CIFS Server NetBIOS Name: CIFS_01
Path: /backup_conf
Share Properties: oplocks
browsable
changenotify
show-previous-versions
Symlink Properties: symlinks
File Mode Creation Mask: -
Directory Mode Creation Mask: -
Share Comment: serviço operacional 22249
compartilhamento para backup de configuração a pedido do Chaves
Share ACL: Everyone / Full Control
Guest / Full Control
File Attribute Cache Lifetime: -
Volume Name: -
Offline Files: manual
Vscan File-Operations Profile: standard
Maximum Tree Connections on Share: 4294967295
UNIX Group for File Create: -

NETAPP2::>

So... I got a client on VLAN a0a-61, it can access that share on that VLAN... my other clients on VLAN a0a-2 can't access it... Ontap Firewall is disabled (also don't worked when it was enabled...), I got no access restrictions related to CIFS lifs... So I can't figure out why clients on VLAN 2 can't access this share thru VLAN 2 while at the same time they still can access every other share, while clients on VLA 61 are able to access every share even this one thru VLAN 61...

Also, all clients on all VLANs can use "smbclient" command to "list" to every share on the CIFS server using the filler IP on their VLAN, but when I try to mount using the same options under SMB 3.0 (only one enable), using the SAME AD credentials, clients on vlan other then 61 can't mount that specific "backup_conf" share...

Could there be something wrong with on of my nodes? ARP table (I really out of ideas now....) ...

SMB Client command that works on every host (VLAN 2 and 61) and shows every share, with no problem:
[root@bacula-sc ~]# history | grep smbcli
1341 2026-01-19 15:41:48 smbclient -L 10.18.2.200 -U us-bacula -W trt18
1342 2026-01-19 15:42:32 smbclient -L 10.18.8.87 -U us-bacula -W trt18
1344 2026-01-19 15:42:47 smbclient -L 10.18.8.77 -U us-bacula -W trt18
1345 2026-01-19 15:44:40 smbclient -L 10.18.2.200 -U us-bacula -W trt18
1356 2026-01-19 16:40:19 history | grep smbclient
1357 2026-01-19 16:40:33 smbclient -L 10.18.0.201 -U us-bacula -W trt18
1360 2026-01-19 16:40:54 smbclient -L 10.18.0.201 -U us-bacula -W trt18
1362 2026-01-19 16:53:18 history | grep smbcli

Mount command that only works on VLAN 61 clients:
mount -t nfs -o rw,bg,hard,nfsvers=3,tcp,rsize=1048576,wsize=1048576,noatime,nodiratime,nconnect=8 10.18.8.73:/nfs_sasa_0 /mnt/test_netapp

Mount command that DON'T work anymore on VLAN 2 clients, but should work, it worked till JAN 15, when I moved some vols and got some errors:
mount -t nfs -o rw,bg,hard,nfsvers=3,tcp,rsize=1048576,wsize=1048576,noatime,nodiratime,nconnect=8 10.18.2.200:/nfs_sasa_0 /mnt/test_netapp

ps.: Ok, I got it, something went foobar on day 15, but I'm also a little lost on Netapp logs (there are too many logs...)... Can someone give me some advice?

Re: CIFS share not accessible thru specific lif

TMACMD — Mon, 19 Jan 2026 20:14:59 GMT

What about a “route show”?

Maybe something is amiss there?

Re: CIFS share not accessible thru specific lif

tech-trt18 — Fri, 23 Jan 2026 12:56:14 GMT

Well... I took a look at route, everything was Ok... In the end I deleted the share and recreated it... When I did it I don't know why I showed that the volume was not mounted... But, well, it was before... It was showing "object not found" in the logs when I tried to mount the share over the backup VLAN before recreating the share.

Anyway, let me explain it better, I deleted the share (not the vol), and went to recreate it but the volume was not showing in the list of avaliable paths to share... So I looked for the vol and it showed as not mounted... quite wierd... I think something got corrupted on Jan 15 and one node was seeing the vol as mounted and the other node saw it as unmounted, I really can't pinpoint it but seems like the most likely cause.

I just mounted the vol and recreated the share and I as back to working as intented on all VLANs. Quite wierd, but well... solved.

ps.: sorry for any bed engrish, I'm not a native speaker.

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CIFS share not accessible thru specific lif

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