Field Notice: FN - 70593 - MegaSAS.log File in the APIC Directory Does Not Roll Over Which Causes the Disk to Fill and the System to Report Fault F1527 - Software Upgrade Recommended

Notice

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Revision History

Revision	Publish Date	Comments
1.0	26-Aug-20	Initial Release

Products Affected

Affected OS Type	Affected Software Product	Affected Release	Affected Release Number	Comments
NON-IOS	APIC Software	3.2	3.2(1l), 3.2(1m), 3.2(2l), 3.2(2o), 3.2(3i), 3.2(3n), 3.2(3o), 3.2(3r), 3.2(3s), 3.2(41d), 3.2(4d), 3.2(4e), 3.2(5d), 3.2(5e), 3.2(5f)
NON-IOS	APIC Software	3.1	3.1(1i), 3.1(2m), 3.1(2o), 3.1(2p), 3.1(2q), 3.1(2s), 3.1(2t), 3.1(2u), 3.1(2v)
NON-IOS	APIC Software	3.0	3.0(1k), 3.0(2h), 3.0(2k), 3.0(2n)
NON-IOS	APIC Software	2.3	2.3(1e), 2.3(1f), 2.3(1i), 2.3(1l), 2.3(1o), 2.3(1p)
NON-IOS	APIC Software	2.2	2.2(1n), 2.2(1o), 2.2(2e), 2.2(2f), 2.2(2i), 2.2(2j), 2.2(2k), 2.2(2q), 2.2(3j), 2.2(3p), 2.2(3r), 2.2(3s), 2.2(3t), 2.2(4f), 2.2(4p), 2.2(4q), 2.2(4r), 2.2.1
NON-IOS	APIC Software	2.1	2.1(1h), 2.1(1i), 2.1(2e), 2.1(2g), 2.1(2k), 2.1(3g), 2.1(3h), 2.1(3j), 2.1(4a)
NON-IOS	APIC Software	2.0	2.0(1m), 2.0(1n), 2.0(1o), 2.0(1p), 2.0(1q), 2.0(1r), 2.0(2f), 2.0(2g), 2.0(2h), 2.0(2l), 2.0(2m), 2.0(2n), 2.0(2o)
NON-IOS	APIC Software	1.3	1.3(1g), 1.3(1h), 1.3(1i), 1.3(1j), 1.3(2f), 1.3(2h), 1.3(2i), 1.3(2j), 1.3(2k)
NON-IOS	APIC Software	1.2	1.2(1i), 1.2(1k), 1.2(1m), 1.2(2g), 1.2(2h), 1.2(2i), 1.2(2j), 1.2(3c), 1.2(3e), 1.2(3h), 1.2(3m)
NON-IOS	APIC Software	1.1	1.1(1j), 1.1(1o), 1.1(1r), 1.1(1s), 1.1(2h), 1.1(2i), 1.1(3f), 1.1(4e), 1.1(4f), 1.1(4g), 1.1(4i), 1.1(4l), 1.1(4m)
NON-IOS	APIC Software	1.0	1.0(1e), 1.0(1h), 1.0(1k), 1.0(1n), 1.0(2j), 1.0(2m), 1.0(3f), 1.0(3i), 1.0(3k), 1.0(3n), 1.0(3o), 1.0(4g), 1.0(4h), 1.0(4o), 1.0(4q), 1.0.0.356
NON-IOS	APIC Software	4.0	4.0(1h)

Defect Information

Defect ID	Headline
CSCvn13119	MegaSAS.log File in / Directory on APIC Not Rolling Over Causing Disk to Fill

Problem Description

On Cisco Application Policy Infrastructure Controller (APIC) units the MegaSAS.log file grows to a very large size and the system reports fault F1527, which states that 75% or more of the unit's storage is in use.

Background

Fault F1527 can indicate that an internal log file is not being rotated correctly. In releases listed in the Affected Release column in the Products Affected table, there is a known issue where the MegaSAS log is not rotated properly.

Problem Symptom

If an APIC is affected by this issue, the APIC will report fault F1527 as highlighted in this example:

# fault.Inst 

 code             : F1527 
 ack              : no 
 cause            : equipment-full 
 changeSet        : available (Old: 9131092, New: 9131088), capUtilized (Old: 74, New: 75), used (Old: 25988488, New: 25988492)
 childAction      :  
 created          : 2018-10-26T02:40:23.880+11:00 
 delegated        : no 
 descr            : Storage unit / on Node 1 mounted at / is 75% full 
 dn               : topology/pod-1/node-1/sys/ch/p-[/]-f-[/dev/dm-8]/fault-F1527 
 domain           : infra 
 highestSeverity  : warning 
 lastTransition   : 2018-10-26T02:42:45.113+11:00 
 lc               : raised 
 modTs            : never 
 occur            : 1 
 origSeverity     : warning 
 prevSeverity     : warning 
 rn               : fault-F1527 
 rule             : eqpt-storage-full-warning 
 severity         : warning 
 status           :  
 subject          : equipment-full 
 type             : operational
 uid              :

Workaround/Solution

Customers should upgrade to Release 3.2(6i), 4.0(2c), or any release thereafter, and truncate the old log file only if you see fault F1527. It is recommended that you truncate the log file before you complete the software upgrade.

Contact the Technical Assistance Center (TAC) to have them log in as root to complete the truncation of the log file.

In later releases with the fix, the log file will be taken care of automatically.

The procedure to truncate your log file is as follows:

Note: TAC must log in as root user.

[root@APIC01 /]# cd /
[root@APIC01 /]# echo > MegaSAS.log

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

• Open a service request on Cisco.com
• By email or telephone

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