Azure netapp file , file can not sync, new file can not upload

Question

Azure netapp file , file can not sync, new file can not upload

Denny Sun 0

Azure netapp files , file can not sync, new file can not upload.

our AKS pod use PVC, which is build on PV, PV is NFS, which based on Azure netapp files

there are 5000 pictures on our DEV server, data will sync to Azure netapp files every minuets.

but , Azure netapp files can not sync for three days, now, there are only 4000 pictures on Azure netapp files

Ravi Varma Mudduluru 12,535 Reputation points Microsoft External Staff Moderator

2026-03-16T03:15:48.2566667+00:00
Hello @ Denny Sun,

Thanks for reaching out to Microsoft Q&A.

Could you please provide me the below details to understand the issue deeper?

Can you share the exact error messages or logs you see when the sync does not complete?

How are you mounting the Azure NetApp Files volume (NFS version and options) in your AKS pods?

Have you checked if the NetApp volume is hitting any capacity or throughput limits during the sync?

2 answers

Your answer

Ravi Varma Mudduluru 12,535 Reputation points Microsoft External Staff Moderator

2026-03-16T03:15:48.2566667+00:00

Hello @ Denny Sun,

Thanks for reaching out to Microsoft Q&A.

Could you please provide me the below details to understand the issue deeper?

Can you share the exact error messages or logs you see when the sync does not complete?

How are you mounting the Azure NetApp Files volume (NFS version and options) in your AKS pods?

Have you checked if the NetApp volume is hitting any capacity or throughput limits during the sync?

Answer 1

Hello Denny Sun

It appears you’re using an NFS-based Azure NetApp Files volume with your AKS PVC, and new files aren’t appearing on the volume—while your DEV server shows about 5,000 images, only around 4,000 are visible in the ANF mount. Here are some steps to help troubleshoot and a few questions to further narrow down the issue with the missing files.

What to check first:

NFS mounting & connectivity:

On an AKS node, run the below command:

showmount -e <your-volume>.<account>.netapp.azure.com --> to ensure the export is accessible.

Make sure you’re using a supported NFS version (v3 or v4.1) and appropriate mount options (rsize/wsize, timeo, etc.).

Confirm that your firewall/NSG allows outbound NFS traffic (port 2049).

NetApp capacity/throughput:

In the Azure portal, check Metrics under your NetApp account and capacity pool. Ensure you haven’t reached volume capacity, IOPS, or throughput limits, as exceeding these can cause write issues.

Sync tool logs:

If you’re using rsync, Robocopy, or another bulk-copy tool, review logs for errors like “permission denied,” “file exists,” or timeouts. For file sets larger than 10 GB, using a tool with retries is recommended.

File naming or size limits:

Check that file paths don’t exceed 255 characters and don’t include unusual characters that might cause issues.

Azure File Sync:

Azure File Sync is only compatible with Azure Files, not Azure NetApp Files. For ANF, copy data directly over NFS or SMB.

I hope the above answer helps you! Please let us know if you have any further questions.

Please don't forget to "upvote" where the information provided will help you, this can be beneficial to other members of the community.

Answer 2

The described behavior (files not syncing, missing files, AKS + PVC on Azure NetApp Files) is not covered in the provided context. The context only states that Azure NetApp Files fully supports using DNS A/AAAA and CNAME records for connecting to NFS and SMB shares; it does not include troubleshooting steps for data not syncing or files missing in Azure NetApp Files.

References:

Networking FAQs for Azure NetApp Files