Connectrix: Cisco Kernel messages in 97xx switches

Summary: This article describes Cisco Kernel messages in 97xx switch models.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
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Symptoms

The logflash flash storage device on a supervisor is not mounted.
Kernel messages seen in the switch:

2016 Apr 4 14:29:14 SSC-SW01 Apr 4 14:29:14 %KERN-3-SYSTEM_MSG: [29617616.550197] usb 2-1.3: device descriptor read/64, error -110 - kernel
2016 Apr 4 14:29:29 SSC-SW01 Apr 4 14:29:29 %KERN-3-SYSTEM_MSG: [29617631.740219] usb 2-1.3: device descriptor read/64, error -110 - kernel
2016 Apr 4 14:29:44 SSC-SW01 Apr 4 14:29:44 %KERN-3-SYSTEM_MSG: [29617647.010112] usb 2-1.3: device descriptor read/64, error -110 - kernel
2016 Apr  4 14:30:20 SSCSW01 Apr  4 14:30:20 %KERN-3-SYSTEM_MSG: [29617683.010868] Aborting journal on device sdb1. - kernel
2016 Apr  4 14:30:20 SSC-SW01 Apr  4 14:30:20 %KERN-3-SYSTEM_MSG: [29617683.010913] sd 2:0:0:0: rejecting I/O to offline device - kernel
2016 Apr  4 14:30:20 SSC-SW01 Apr  4 14:30:20 %KERN-3-SYSTEM_MSG: [29617683.010982] Buffer I/O error on device sdb1, logical block 519 - kernel
2016 Apr  4 14:30:20 SSC-SW01 Apr  4 14:30:20 %KERN-3-SYSTEM_MSG: [29617683.011190] end_request: I/O error, dev sdb, sector 28017520 - kernel
2016 Apr  4 14:30:20 SSC-SW01 Apr  4 14:30:20 %KERN-0-SYSTEM_MSG: [29617683.011244] journal commit I/O error - kernel
2016 Apr  4 14:30:20 SSC-SW01 Apr  4 14:30:20 %KERN-3-SYSTEM_MSG: [29617683.011291] Buffer I/O error on device sdb1, logical block 3502186 - kernel
2016 Apr  4 14:30:20 SSC-SW01 Apr  4 14:30:20 %KERN-3-SYSTEM_MSG: [29617683.011568] Buffer I/O error on device sdb1, logical block 3502186 - kernel
2016 Apr  4 14:30:20 SSC-SW01 Apr  4 14:30:20 %KERN-3-SYSTEM_MSG: [29617683.012844] Buffer I/O error on device sdb1, logical block 3473410 - kernel
2016 Apr  4 14:30:20 SSC-SW01 Apr  4 14:30:20 %KERN-2-SYSTEM_MSG: [29617683.012969] ext3_abort called. - kernel
2016 Apr  4 14:30:20 SSC-SW01 Apr  4 14:30:20 %KERN-2-SYSTEM_MSG: [29617683.013009] EXT3-fs error (device sdb1): ext3_journal_start_sb: Detected aborted journal - kernel
2016 Apr  4 14:30:20 SSC-SW01 Apr  4 14:30:20 %KERN-2-SYSTEM_MSG: [29617683.013129] Remounting filesystem read-only - kernel
2016 Apr  4 14:30:20 SSC-SW01 %USBHSD-2-UMOUNT: logflash: offline

This issue only occurs on Nexus 7700 N77-SUP2E and MDS 9710 DS-X97-SF1-K9 type supervisors in chassis with dual supervisors.

A system switchover does not resolve the issue.

Cause

Nexus 7700 and MDS 9700 supervisor logflash devices are not mounted.
See CSCuv67115This hyperlink is taking you to a website outside of Dell Technologies.

 

Resolution

Workaround:
Power cycle the affected supervisor.

In dual supervisor systems, this can be done by powering off the supervisor with the out-of-service module command and powering it back up with the no poweroff module command.
Ensure that the supervisor is in standby mode first so that the recovery does not affect system stability.

It is insufficient to reboot the module with the reload or system switchover commands.

This issue now has a fix in the NX-OS code 7.3.0.d1.1.

Affected Products

Connectrix MDS-9710

Products

Connectrix, Connectrix MDS-9706, Connectrix MDS-9710
Article Properties
Article Number: 000167130
Article Type: Solution
Last Modified: 04 May 2026
Version:  6
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