General
Unable to access bootflash
Nexus9500# Copy running-config bootflash:test_run
Copy failed: Read-only file system (0x807B001E)
Copy complete, now saving to disk (please wait)...
Also see I/O errors in the log
Apr 12 05:58:09 %KERN-3-SYSTEM_MSG: [6968471.092073] Buffer I/O error on device sda7, logical block 4307 - kernel
Apr 12 05:58:09 %KERN-3-SYSTEM_MSG: [6968471.092091] Aborting journal on device sda4-8. - kernel
2014 Apr 12 05:58:10 tukuscore01 Apr 12 05:58:09 %KERN-3-SYSTEM_MSG: [6968471.092102] end_request: I/O error, dev sda, sector 100753408 - kernel
Symptom
Unable to access bootflash
Nexus9500# Copy running-config bootflash:test_run
Copy failed: Read-only file system (0x807B001E)
Copy complete, now saving to disk (please wait)...
Also see I/O errors in the log
Apr 12 05:58:09 %KERN-3-SYSTEM_MSG: [6968471.092073] Buffer I/O error on device sda7, logical block 4307 - kernel
Apr 12 05:58:09 %KERN-3-SYSTEM_MSG: [6968471.092091] Aborting journal on device sda4-8. - kernel
2014 Apr 12 05:58:10 tukuscore01 Apr 12 05:58:09 %KERN-3-SYSTEM_MSG: [6968471.092102] end_request: I/O error, dev sda, sector 100753408 - kernel
Conditions
Seen on systems that has been up and running for over 70 days, however it can be seen in new setups as well
Workaround
1. A power cycle of the switch is required to clear the condition in case of a ToR
2. In case of redundant supervisor, if standby supervisor is not affected, one can switchover to standby supervisor.
Further Problem Description
Issue is fixed in 6.1(2)I2(2b) and 6.1(2)I3(1) and later.
A firmware patch is available that will permanently fix the issue on older versions of code. Please contact your local account SE or Cisco TAC on instructions to get the firmware patch and update the system.
