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Cisco Bug: CSCuj45990 - N3K-C3064PQ-10GX at reload flash may be mounted as readonly

Last Modified

Jun 15, 2020

Products (5)

  • Cisco Nexus 3000 Series Switches
  • Cisco Nexus 3064 Switch
  • Cisco Nexus 3016 Switch
  • Cisco Nexus 3064-T Switch
  • Cisco Nexus 3048 Switch

Known Affected Releases

5.0(3)U5(1) 5.0(3)U5(1d) 5.0(3)U5(1e) 5.0(3)U5(1f)

Description (partial)

Symptom:Flash may become inaccessible immediately following reload of N3K-C3064PQ-10GX.
'copy run start' will not complete while switch is in this state.

Conditions:Issue only manifests during bootup and has only occurred on N3K-C3064PQ-10GX.

After reload, the following logs will occur closely after VDC online message:
%KERN-3-SYSTEM_MSG: Buffer I/O error on device sda4, logical block 7 - kernel
%KERN-3-SYSTEM_MSG: Buffer I/O error on device sda4, logical block 2 - kernel
%KERN-3-SYSTEM_MSG: Buffer I/O error on device sda4, logical block 3 - kernel
%KERN-3-SYSTEM_MSG: Buffer I/O error on device sda4, logical block 395 - kernel
%KERN-3-SYSTEM_MSG: Aborting journal on device sda4. - kernel
%KERN-2-SYSTEM_MSG: ext3_abort called. - kernel
%KERN-2-SYSTEM_MSG: EXT3-fs error (device sda4): ext3_journal_start_sb: Detected aborted journal - kernel
%KERN-2-SYSTEM_MSG: Remounting filesystem read-only - kernel
%KERN-3-SYSTEM_MSG: scsi0 (0:0): rejecting I/O to device being removed - kernel
%KERN-3-SYSTEM_MSG: Buffer I/O error on device sda4, logical block 49160 - kernel
%KERN-3-SYSTEM_MSG: sdb: assuming drive cache: write through - kernel
%KERN-3-SYSTEM_MSG: sdb: assuming drive cache: write through - kernel
%KERN-3-SYSTEM_MSG: FAT: bogus number of reserved sectors - kernel
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