Description

Due to SSD physical media issue we might see below logs when any read write operation is attempted in the disk

Symptoms

Sep 16 07:25:59 Device-name kernel: ata5.00: status: { DRDY ERR }

Sep 16 07:25:59 Device-name kernel: ata5.00: error: { UNC }

Sep 16 07:25:59 Device-name kernel: ata5.00: configured for UDMA/133

Sep 16 07:25:59 Device-name kernel: sd 4:0:0:0: [sdb] tag#20 FAILED Result: hostbyte=DID_OK driver byte=DRIVER_SENSE

Sep 16 07:25:59 Device-name kernel: sd 4:0:0:0: [sdb] tag#20 Sense Key : Medium Error [current]

Sep 16 07:25:59 Device-name kernel: sd 4:0:0:0: [sdb] tag#20 Add. Sense: Unrecovered read error - auto reallocate failed

Sep 16 07:25:59 Device-name kernel: sd 4:0:0:0: [sdb] tag#20 CDB: Read(10) 28 00 00 00 00 00 00 00 08 00

Sep 16 07:25:59 Device-name kernel: print_req_error: I/O error, dev sdb, sector 0 flags 0

Sep 16 07:25:59 Device-name kernel: Buffer I/O error on dev sdb, logical block 0, async page read

Sep 16 07:25:59 Device-name kernel: ata5: EH complete

Sep 16 07:25:59 Device-name kernel: ata5.00: exception Emask 0x0 SAct 0x40000 SErr 0x0 action 0x0

Sep 16 07:25:59 Device-name kernel: ata5.00: irq_stat 0x40000008

Sep 16 07:25:59 Device-name kernel: ata5.00: failed command: READ FPDMA QUEUED

Sep 16 07:25:59 Device-name kernel: ata5.00: cmd 60/08:90:00:00:00/00:00:00:00:00/40 tag 18 ncq dma 4096 in res 41/40:08:00:00:00/00:00:00:00:00/40 Emask 0x409 (media error) <F>

Solution

  • Try rebooting the RE/disk and see if the disk media error get recovered
  • Replace RE/disk

Modification History

2025-10-27 : Article Created