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Cisco Bug: CSCus22805 - N7K-SUP2/E: eUSB Flash Failure or Unable to Save Configuration

Last Modified

Sep 17, 2018

Products (8)

  • Cisco Nexus 7000 Series Switches
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco Nexus 7000 4-Slot Switch
  • Cisco Nexus 7700 6-Slot Switch
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco Nexus 7700 18-Slot Switch
  • Cisco Nexus 7700 10-Slot Switch
  • Cisco Nexus 7000 9-Slot Switch

Known Affected Releases

6.1(5a) 6.2(10) 6.2(12)

Description (partial)

Symptom:
The following symptoms have been seen:
- Compact flash diagnostic failure
- Unable to perform a 'copy run start'
- eUSB becomes read-only or is non-responsive
-When running VTP, newly create VLANs are not propagated to other VTP switches and VTP Configuration Revision number does not increment locally.

To display the current status of the RAID devices, please run the following commands:

switch# show system internal raid | i i cmos|block | head line 5
RAID data from CMOS = 0xa5 0xf0
      77888 blocks [2/2] [UU]
      78400 blocks [2/2] [UU]
      39424 blocks [2/2] [UU]
      1802240 blocks [2/2] [UU]

Where x is the standby supervisor slot number:

switch# slot x show system internal raid | i i cmos|block | head line 5
RAID data from CMOS = 0xa5 0xf0
      78016 blocks [2/2] [UU]
      78528 blocks [2/2] [UU]
      39744 blocks [2/2] [UU]
      1760384 blocks [2/2] [UU]

Last number in the "RAID data from CMOS" lines indicate the number of disks failed:

    0xf0 ==>> No failures reported
    0xe1 ==>> Primary flash failed
    0xd2 ==>> Alternate (or mirror) flash failed
    0xc3 ==>> Both primary and alternate failed

We should also see [UU] in the respective entries for the flash to be correctly synced.

Conditions:
- N7K-SUP2 or N7K-SUP2E
- Several months or years of uptime

Related Community Discussions

<key>CSCus22805</key> - N7K-SUP2/E eUSB Flash Failure or Unable to Save Configuration - 4
The flash recovery tool does not work with 6.2(14)   N7K# load bootflash:n7000-s2-flash-recovery-tool.10.0.2.gbin Loading plugin version 10.0(2) Incompatible with running image version 6.2(14)
Latest activity: Jun 22, 2018
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