Aug 10 23:12:44 ubuntu kernel: [ 3971.646978] ata6: EH complete
Aug 10 23:12:48 ubuntu kernel: [ 3975.788000] ata6.00: exception Emask 0x0 SAct 0x1000000 SErr 0x0 action 0x0
Aug 10 23:12:48 ubuntu kernel: [ 3975.788004] ata6.00: irq_stat 0x40000008
Aug 10 23:12:48 ubuntu kernel: [ 3975.788008] ata6.00: failed command: READ FPDMA QUEUED
Aug 10 23:12:48 ubuntu kernel: [ 3975.788013] ata6.00: cmd 60/08:c0:08:b0:07/00:00:00:00:00/40 tag 24 ncq 4096 in
Aug 10 23:12:48 ubuntu kernel: [ 3975.788013]          res 41/40:08:08:b0:07/00:00:00:00:00/00 Emask 0x409 (media error) <F>
Aug 10 23:12:48 ubuntu kernel: [ 3975.788015] ata6.00: status: { DRDY ERR }
Aug 10 23:12:48 ubuntu kernel: [ 3975.788017] ata6.00: error: { UNC }
Aug 10 23:12:48 ubuntu kernel: [ 3975.907491] ata6.00: configured for UDMA/133
Aug 10 23:12:48 ubuntu kernel: [ 3975.907505] sd 5:0:0:0: [sda] tag#24 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Aug 10 23:12:48 ubuntu kernel: [ 3975.907508] sd 5:0:0:0: [sda] tag#24 Sense Key : Medium Error [current] [descriptor]
Aug 10 23:12:48 ubuntu kernel: [ 3975.907510] sd 5:0:0:0: [sda] tag#24 Add. Sense: Unrecovered read error - auto reallocate failed
Aug 10 23:12:48 ubuntu kernel: [ 3975.907512] sd 5:0:0:0: [sda] tag#24 CDB: Read(10) 28 00 00 07 b0 08 00 00 08 00
Aug 10 23:12:48 ubuntu kernel: [ 3975.907514] blk_update_request: I/O error, dev sda, sector 503816
Aug 10 23:12:48 ubuntu kernel: [ 3975.907520] Buffer I/O error on dev dm-0, logical block 1, async page read
Aug 10 23:12:48 ubuntu kernel: [ 3975.907532] ata6: EH complete
Aug 10 23:12:48 ubuntu kernel: [ 3975.907934] EXT4-fs (dm-0): couldn't mount as ext3 due to feature incompatibilities
Aug 10 23:12:48 ubuntu kernel: [ 3975.908111] EXT4-fs (dm-0): couldn't mount as ext2 due to feature incompatibilities
Aug 10 23:12:52 ubuntu kernel: [ 3980.048021] ata6.00: exception Emask 0x0 SAct 0x40000 SErr 0x0 action 0x0
Aug 10 23:12:52 ubuntu kernel: [ 3980.048025] ata6.00: irq_stat 0x40000008
Aug 10 23:12:52 ubuntu kernel: [ 3980.048028] ata6.00: failed command: READ FPDMA QUEUED
Aug 10 23:12:52 ubuntu kernel: [ 3980.048031] ata6.00: cmd 60/08:90:08:b0:07/00:00:00:00:00/40 tag 18 ncq 4096 in
Aug 10 23:12:52 ubuntu kernel: [ 3980.048031]          res 41/40:08:08:b0:07/00:00:00:00:00/00 Emask 0x409 (media error) <F>
Aug 10 23:12:52 ubuntu kernel: [ 3980.048033] ata6.00: status: { DRDY ERR }
Aug 10 23:12:52 ubuntu kernel: [ 3980.048034] ata6.00: error: { UNC }
Aug 10 23:12:53 ubuntu kernel: [ 3980.190009] ata6.00: configured for UDMA/133
Aug 10 23:12:53 ubuntu kernel: [ 3980.190024] sd 5:0:0:0: [sda] tag#18 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Aug 10 23:12:53 ubuntu kernel: [ 3980.190027] sd 5:0:0:0: [sda] tag#18 Sense Key : Medium Error [current] [descriptor]
Aug 10 23:12:53 ubuntu kernel: [ 3980.190030] sd 5:0:0:0: [sda] tag#18 Add. Sense: Unrecovered read error - auto reallocate failed
Aug 10 23:12:53 ubuntu kernel: [ 3980.190034] sd 5:0:0:0: [sda] tag#18 CDB: Read(10) 28 00 00 07 b0 08 00 00 08 00
Aug 10 23:12:53 ubuntu kernel: [ 3980.190036] blk_update_request: I/O error, dev sda, sector 503816
Aug 10 23:12:53 ubuntu kernel: [ 3980.190055] ata6: EH complete
Aug 10 23:12:53 ubuntu kernel: [ 3980.190071] EXT4-fs (dm-0): can't read group descriptor 0