Connectrix: Cisco: /nxos/tmp partition filled

Summary: /nxos/tmp partition filled by feature-mgr log file

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Symptoms

This issue occurs after a long period of supervisor uptime.
It becomes apparent if a standby supervisor is present and it is reset (ISSU, ISSD, supervisor switchover, or standby reset) since it never comes online.

"show system internal flash" indicates that the /nxos/tmp is 100% -

`show system internal flash`
Mount-on                  1K-blocks      Used   Available   Use%  Filesystem
/                            204800     47756      157044     24   /dev/root
/proc                             0         0           0      0   proc
/isan                        512000    231592      280408     46   none
/var                          51200       492       50708      1   none
/etc                           5120       936        4184     19   none
/nxos/tmp                     20480     20480           0    100   none
/var/log                      51200      6212       44988     13   none
/var/home                      5120        48        5072      1   none

 

Cause

A file called fm_debug.log.vdc_1* consumes the space. This can be identified as follows:

switch# show system internal dir /nxos/tmp | include fm_debug
fm_debug.log.vdc_1.2698 20922368

The following type of syslog messages may be logged:

%SYSMGR-2-TMP_DIR_FULL: System temporary directory usage is unexpectedly high at 97%.

This is Cisco bug CSCtr15670

 

Resolution

Upgrade past nx-os code 5.28d.

 

Article Properties
Article Number: 000171394
Article Type: Solution
Last Modified: 19 Nov 2025
Version:  5
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