topic Re: FAS3240 boot loop (no disk error) in ONTAP Discussions

FAS3240 boot loop (no disk error)

JONSHORTEN — Thu, 05 Jun 2025 06:17:36 GMT

Trying to set up a new system as below (part of a FlexPod implementation):

Dual Chassis

2 FAS3240

1 ds2246

1 ds4243

Ontap 8.0.2 7-mode

Cabling is as the NetApp guide for dual chassis HA

One controller boot fine & can be configured; the other complains that it has 0 disks & continually reboots.

The problem controller will boot into maintenance mode, but the "disk show" & "disk assign" commands don't work as expected, showing no unassigned disks available, although "disk show" on the working controller shows half of the disks unassigned.

I've tried swapping the controllers over to eliminate cabling issues & the fault remains with the same physical controller.

I'd appreciate any ideas as I've run out of them, output from a failed boot cycle below:

Sun Oct 14 09:51:42 GMT [config.noPartnerDisks:CRITICAL]: No disks were detected for the partner; this node will be unable to takeover correctly

Sun Oct 14 09:51:42 GMT [callhome.dsk.config:warning]: Call home for DISK CONFIGURATION ERROR

Sun Oct 14 09:51:43 GMT [fmmb.instStat.change:info]: no mailbox instance on local side.

Sun Oct 14 09:51:43 GMT [fmmb.instStat.change:info]: no mailbox instance on partner side.

Sun Oct 14 09:51:43 GMT [cf.fm.noMBDisksOrIc:warning]: Could not find the local mailbox disks. Could not determine the firmware state of the partner through the HA interconnect.

WARNING: 0 disks found!

Storage Adapters found:

0 Fibre Channel Storage Adapters found!

6 SAS Adapters found!

0 Parallel SCSI Storage Adapters found!

0 ATA Adapters found!

Target Adapters found:

4 Fibre Channel Target Adapters found!

2 iSCSI Target Adapters found!

1 Unknown Target Adapters found!

Check that disks have been assigned ownership to this system (ID 1575087607) using the 'disk show' and 'disk assign'

commands from maintenance mode.

Uptime: 45s

System rebooting...

Re: FAS3240 boot loop (no disk error)

SeanLuce — Wed, 10 Oct 2012 19:35:50 GMT

Are ALL of the disks owned by the other controller?

Re: FAS3240 boot loop (no disk error)

SeanLuce — Wed, 10 Oct 2012 19:38:06 GMT

On the controller that is working correctly, what is the output of "disk show"?

Re: FAS3240 boot loop (no disk error)

SeanLuce — Wed, 10 Oct 2012 19:40:09 GMT

One more thing to check on the controller that is working correctly: What is the output of 'disk show -n'? This command will show you disks that are unowned and available to be assigned to the other controller.

Re: FAS3240 boot loop (no disk error)

JONSHORTEN — Wed, 10 Oct 2012 19:47:17 GMT

I can interrupt the boot, option 4 doesn't change anything though, goes through the process to create a new file system, then drops back into the boot loop

JonS

Sent from my Blackberry

Re: FAS3240 boot loop (no disk error)

JONSHORTEN — Wed, 10 Oct 2012 19:49:05 GMT

I'll have to try this tomorrow, the building has just closed

JonS

Sent from my Blackberry

Re: FAS3240 boot loop (no disk error)

AGUMADAVALLI — Wed, 10 Oct 2012 19:53:11 GMT

Hi there,

According to you, you are able to see the half number of disks on the first node which is up and running.

go into the maintainence mode of troubled node while booting and issue disk show -n and sysconfig -a to make sure you are able to see all the loops and associated disks.

Then bring all the disk show -n output to a excel sheet and segregate the disks owned by node 1 is which is up and running.

the left over disks must be owned by former controller or previous used shelfs, So change the ownership of them to system-id of your troubled node.

Once owner ship is changed and zero the disks, it may take couple of hours to complete but you are good to go from there.

If you still have issues, contact netapp or professional services.

thank you,

aK G

Re: FAS3240 boot loop (no disk error)

SeanLuce — Wed, 10 Oct 2012 19:54:28 GMT

I am guessing that all of the disks are owned by the other controller. If they have all been assigned to the other controller, but not added to an aggregate, you can change the ownership to the other controller by using the "disk assign <disk_id> -o unowned" command.

Once you do that, 'disk show -n' should now show that disk as being unowned.

You will need a minimum of three disks to create an aggregate. They will need to be zeroed out as well. This will take quite some time if they are SATA drives. Not so long if they are SAS drives.

If the disks have already been added to an aggregate, you will need to destroy the aggregate before using the "disk assign <disk_id> -o unowned" command.

Re: FAS3240 boot loop (no disk error)

AGUMADAVALLI — Wed, 10 Oct 2012 19:57:22 GMT

yes, you can unassign the first node required number of disks and change the ownership, it should work.

thank you

AKG

Re: FAS3240 boot loop (no disk error)

JONSHORTEN — Wed, 10 Oct 2012 19:59:54 GMT

When I did a straight "disk show" on the working controller half the disks had this controller listed as owner, & half had nothing in the owner field.

I'll try the "disk show -n" as soon as the building is open tomorrow.

JonS

Sent from my Blackberry

Re: FAS3240 boot loop (no disk error)

aborzenkov — Thu, 11 Oct 2012 05:20:25 GMT

So assign unowned disks to other controller.

Re: FAS3240 boot loop (no disk error)

SeanLuce — Thu, 11 Oct 2012 05:32:09 GMT

He said he already tried that in his original post.

Re: FAS3240 boot loop (no disk error)

aborzenkov — Thu, 11 Oct 2012 05:40:50 GMT

OK. He said “disk assign shows no unassigned disks”, so they belong to some other filer. They need to be reassign to this controller.