VNX: Unable to failover/failback Data Mover. Error 28: server_2 : No space left on device

Summary: Unable to failover/failback Data Mover.

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Symptoms



Unable to failover or failback Data Mover. 

Receiving below error when attempting failover/failback:  
 
[nasadmin@CS0 ~]$ server_standby server_2 -restore mover
server_2 :
Error 28: server_2 : No space left on device

Cause

Although all partitions show that they have free space, the inodes have all been used in /nbsnas:  
 
[root@CS0 ~]# df -i /nbsnas
Filesystem            Inodes   IUsed   IFree IUse% Mounted on
/dev/nde1             258048   258048  0    100% /nbsnas

Under the /nbsnas/tasks, there are hundreds of thousands of files. They all show up similar to below: 
 
-rw-r--r-- 1 nasadmin     nasadmin   39 Nov 24 10:31 1586886_status
-rw-r--r-- 1 nasadmin     nasadmin   39 Nov 24 10:31 1586898_status
-rwxr-xr-x 1 root         nasadmin    0 Nov 25 20:31 1587045_pipe
-rw-r--r-- 1 root         nasadmin   39 Nov 25 20:31 1587045_status
-rw-r--r-- 1 root         nasadmin   39 Nov 27 20:25 1587072_status
-rwxr-xr-x 1 root         nasadmin    0 Nov 27 20:25 1587075_pipe

Resolution

Find which sub folder has used most inodes in /nbsnas.

In most of the cases, it is the /nbsnas/tasks directory which contains thousands of stale tasks.

Follow the instructions in KB article  336312 to address it.

Once the tasks folder has been cleaned up, failover / failback of the Data Mover should occur without issue.

Affected Products

VNX/VNXe

Products

Celerra, eNAS, VNX/VNXe
Article Properties
Article Number: 000052312
Article Type: Solution
Last Modified: 06 Nov 2025
Version:  3
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