CAM status: ATA Status Error READ_DMA48 Error 5, Retries exhausted

This turned up this morning:

Aug  5 05:10:04 knew kernel: (ada0:ata0:0:0:0): READ_DMA48. ACB: 25 00 d0 c4 6e 40 57 00 00 00 60 00
Aug  5 05:10:04 knew kernel: (ada0:ata0:0:0:0): CAM status: ATA Status Error
Aug  5 05:10:04 knew kernel: (ada0:ata0:0:0:0): ATA status: 51 (DRDY SERV ERR), error: 40 (UNC )
Aug  5 05:10:04 knew kernel: (ada0:ata0:0:0:0): RES: 51 40 f0 c4 6e 57 57 00 00 40 00
Aug  5 05:10:04 knew kernel: (ada0:ata0:0:0:0): Retrying command
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): READ_DMA48. ACB: 25 00 d0 c4 6e 40 57 00 00 00 60 00
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): CAM status: ATA Status Error
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): ATA status: 51 (DRDY SERV ERR), error: 40 (UNC )
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): RES: 51 40 f0 c4 6e 57 57 00 00 40 00
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): Retrying command
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): READ_DMA48. ACB: 25 00 d0 c4 6e 40 57 00 00 00 60 00
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): CAM status: ATA Status Error
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): ATA status: 51 (DRDY SERV ERR), error: 40 (UNC )
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): RES: 51 40 f0 c4 6e 57 57 00 00 40 00
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): Retrying command
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): READ_DMA48. ACB: 25 00 d0 c4 6e 40 57 00 00 00 60 00
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): CAM status: ATA Status Error
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): ATA status: 51 (DRDY SERV ERR), error: 40 (UNC )
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): RES: 51 40 f0 c4 6e 57 57 00 00 40 00
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): Retrying command
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): READ_DMA48. ACB: 25 00 d0 c4 6e 40 57 00 00 00 60 00
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): CAM status: ATA Status Error
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): ATA status: 51 (DRDY SERV ERR), error: 40 (UNC )
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): RES: 51 40 f0 c4 6e 57 57 00 00 40 00
Aug  5 05:10:21 knew kernel: (ada0:ata0:0:0:0): Error 5, Retries exhausted

See also ; that’s the same drive.