PowerScale: OneFS 9 - SyncIQ Policies Fail with Error "cannot sync between clusters with different maximum file sizes"

Summary: ERROR: Cannot sync between clusters with different maximum file sizes. Increase maximum file size on the target cluster. (unrunnable)

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Symptoms

ISSUE: The policy Failure report shows the following errors:

 

# isi sync reports view Test 1
                  Policy Name: Test
                  Job ID: 1
                  Start Time: 2022-02-11T01:12:06
                  End Time: 2022-02-11T01:43:52
                       Action: run
                       State: failed
                  Policy ID: 47bc84622323ed64b608f5c533f58bb8
                  Sync Type: initial
                  Duration: 24s

 

Errors:
ERROR: Cannot sync between clusters with different maximum file sizes (source: 17592186044416, target: 4398046511104). Please increase maximum file size on the target cluster. (unrunnable)
ERROR: Cannot sync between clusters with different maximum file sizes (source: 17592186044416, target: 4398046511104). Please increase maximum file size on the target cluster. (unrunnable)

 

Cause

This error is observed when there are differences between the maximum Large file size setting on both source and target cluster.

The compatibility check for large file support reports an error stating incompatible SyncIQ relation between Source and Target.

 

Resolution

To verify the compatibility for large files, run the below command on both clusters (Source and Target):
Testlab-1 # isi_large_file -c

 

You observe the output as follows:

 

Source Cluster:

Testlab-1# isi_large_file -c

Checking cluster compatibility with large file support.

* Checking SyncIQ compatibility
- The following SyncIQ relationships are not compatible with large file support:

 

Policy ID                      Policy Name     Remote Cluster           Cluster Type  Next Step
--------------------------------------------------------------------------------------------------
47bc84622323ed64b608f5c533f58bb8 Test smartconnectzone.isilonlab.com     target        Sync & re-check

The cluster is not compatible with large file support:
  - Incompatible SyncIQ relationship(s)
Testlab-1# isi_large_file -l
System version:                 v8.2.2.0
Large file support ready:       Yes
Large file support enabled:     Yes
Current maximum file size:        16TB
Achievable maximum file size:     16 TB

 

Compare the same output from the target cluster :-

Target Cluster:

The cluster is not compatible with large file support:

 

 - Incompatible SyncIQ relationship(s)
Testlab-1# isi_large_file -l
System version:                 v8.2.2.0
Large file support ready:       Yes
Large file support enabled:     No
Current maximum file size:       4.0 TB
Achievable maximum file size:     16 TB

 

Here the compatibility check shows that the cluster is not compatible for large file support due to incompatible syncIQ relationships. Large file setting is enabled in the source cluster but not on the Target cluster.

 

ATTENTION: For SyncIQ policy partner clusters, it must have a large file feature enabled. A new SyncIQ policy targeting to a cluster without the large file feature that is enabled fails to sync. Also, OneFS can support a maximum file size of 16 TB on supported cluster configurations when SyncIQ partner clusters are also running version 8.2.2 or later on supported cluster configurations.

 

Additional Information

See the following link: Large file size support
PowerScale OneFS 9.12.0.0 Web Administration Guide 

 

Affected Products

PowerScale OneFS
Article Properties
Article Number: 000197354
Article Type: Solution
Last Modified: 19 Nov 2025
Version:  7
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