might this be related by charsets? I've had a LOT of problems with Windows quietly replacing a - character with a long - character that looks like a longer - when viewed in Outlook, but at the CLI it looks identica.

What happens if you swap the -vserver and the -volumes fields in the command? Does it complaint about the volume name?

From: Toasters <toasters-bounces@teaparty.net> On Behalf Of Davis, Kevin
Sent: Monday, October 2, 2023 12:03 PM
To: toasters@teaparty.net
Subject: SSH commands to ONTAP 9.11.1P11 failing from within script

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Folks something tells me this is going to be a "D'Oh!" moment, but I'm baffled.

I had a simple requirement to support an ongoing project that requires the creation of a snapshot, and a CIFS share referencing that snapshot, over a series of days. Snapshot and share name naming convention is a simple <YYYYmmdd-<string> and <YYYYmmdd-<string>$> respectively.

The intention is to create both snapshot/share a little after midnight each day until the project ends and they are no longer needed. Simple enough, right?

Well, when I run these commands via SSH from a prompt on a Linux box, everything works just fine:

[root@foo01 ~]# /bin/ssh admin@foo'snapshot create -vserver foo3 -volume Foo04 -snapshot 20231003-foo -expiry-time 11/02/2023 00:00:00'

Last login time: 10/2/2023 12:26:31

[root@foo01 ~]# /bin/ssh admin@foo 'snapshot show -vserver foo3 -volume Foo04 -snapshot 20231003-foo '

Last login time: 10/2/2023 12:46:12

                              Vserver: foo3

                               Volume: Foo04

                             Snapshot: 20231003-foo

                        Creation Time: Mon Oct 02 12:46:13 2023

                        Snapshot Busy: false

                       List of Owners: -

                        Snapshot Size: 14.76MB

           Percentage of Total Blocks: 0%

            Percentage of Used Blocks: 0%

                              Comment: -

                      7-Mode Snapshot: false

      Label for SnapMirror Operations: -

                       Snapshot State: -

                 Constituent Snapshot: false

                          Expiry Time: 11/2/2023 00:00:00

                 SnapLock Expiry Time: -

However, running a script (sh or bash, makes no difference in this case), I get this when it runs. It actually doesn't matter what ONTAP command I send, they all give the same "Vserver name: Invalid." error (the /bin/ssh lines are just echo statements in the script so I can see that it's building and sending the right command line):

/bin/ssh admin@foo 'snapshot create -vserver foo3 -volume Foo04 -snapshot 20231003-foo -expiry-time 11/02/2023 00:00:00'

Last login time: 10/2/2023 12:46:39

Error: Vserver name: Invalid. The Vserver name must begin with a letter or an

       underscore. Maximum supported length: 41 if Vserver is type

       "sync-source", 47 otherwise.

/bin/ssh admin@foo 'cifs share create -vserver foo3 -path /Foo04/.snapshot/20231003-foo -share-name 20231003-foo$ -share-properties oplocks,browsable,changenotify,show-previous-versions -symlink-properties symlinks -offline-files manual -vscan-fileop-profile standard -max-connections-per-share 4294967295 -comment pst migrations ok to delete after 11/02/2023 00:00:00'

Last login time: 10/2/2023 12:51:11

Error: Vserver name: Invalid. The Vserver name must begin with a letter or an

       underscore. Maximum supported length: 41 if Vserver is type

       "sync-source", 47 otherwise.

The script is so simple it's embarrassing. Define a few variables and optargs, build 3 simple SSH commands to send to the toaster, and run them. Everything up until these commands reach the toaster is working as expected.  It just breaks when it gets there.  

--  

Kevin Davis 

Systems Administration | Sr. Storage Engineer | Information Services 

UMass Memorial Health | 100 Front St. Fl 1, Worcester, MA 01608 | mailto:kevin.davis@umassmemorial.org

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