I didn't see any error about sdd.
How can i increase log level and see specific log about disk mounting processs ?
# dmesg | egrep "ata|sd"
[26144.125068] sd 3:0:0:0: [sdd] Synchronizing SCSI cache
[26144.143480] sd 3:0:0:0: [sdd] Stopping disk
[26144.951753] sd 2:0:0:0: [sdc] Synchronizing SCSI cache
[26144.951872] sd 2:0:0:0: [sdc] Stopping disk
[26146.498437] sd 1:0:0:0: [sdb] Synchronizing SCSI cache
[26146.498515] sd 1:0:0:0: [sdb] Stopping disk
[26146.521762] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[26146.522087] sd 0:0:0:0: [sda] Stopping disk
[26150.130059] ata6: SATA link down (SStatus 0 SControl 300)
[26150.130124] ata5: SATA link down (SStatus 0 SControl 300)
[26150.189228] sd 0:0:0:0: [sda] Starting disk
[26150.189253] sd 1:0:0:0: [sdb] Starting disk
[26150.189314] sd 2:0:0:0: [sdc] Starting disk
[26150.189348] sd 3:0:0:0: [sdd] Starting disk
[26150.285794] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[26150.303256] ata2.00: configured for UDMA/133
[26156.762607] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[26156.932566] ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[26156.934626] ata4.00: configured for UDMA/133
[26156.969869] ata3.00: configured for UDMA/133
[26159.755961] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[26159.788094] ata1.00: configured for UDMA/133
[31221.024496] sd 3:0:0:0: [sdd] Synchronizing SCSI cache
[31221.056534] sd 3:0:0:0: [sdd] Stopping disk
[31221.857847] sd 2:0:0:0: [sdc] Synchronizing SCSI cache
[31221.857998] sd 2:0:0:0: [sdc] Stopping disk
[31222.277858] sd 1:0:0:0: [sdb] Synchronizing SCSI cache
[31222.277933] sd 1:0:0:0: [sdb] Stopping disk
[31222.297854] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[31222.298365] sd 0:0:0:0: [sda] Stopping disk
[31225.699602] ata5: SATA link down (SStatus 0 SControl 300)
[31225.699665] ata6: SATA link down (SStatus 0 SControl 300)
[31225.755499] sd 0:0:0:0: [sda] Starting disk
[31225.755507] sd 1:0:0:0: [sdb] Starting disk
[31225.755585] sd 2:0:0:0: [sdc] Starting disk
[31225.755615] sd 3:0:0:0: [sdd] Starting disk
[31225.855407] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[31225.872881] ata2.00: configured for UDMA/133
[31232.342208] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[31232.553128] ata3.00: configured for UDMA/133
[31232.592219] ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[31232.594011] ata4.00: configured for UDMA/133
[31235.535576] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[31235.566798] ata1.00: configured for UDMA/133