Arch Linux

mot.def

Member

Registered: 2011-07-03

Posts: 19

Identifying libata disk and port

Having installed Arch on an SSD I am experiencing the error detailed here in the wiki. I wish to disable NCQ on the SSD using boot parameters but I don't know how to identify which port and disk my SSD is attached to. Here is an excerpt of my dmesg with the Emask error:

[    2.641567] scsi 11:0:0:0: Direct-Access     ATA      Corsair Force GT 3    PQ: 0 ANSI: 5
[    2.641866] sd 11:0:0:0: [sdb] 175836528 512-byte logical blocks: (90.0 GB/83.8 GiB)
[    2.641953] sd 11:0:0:0: [sdb] Write Protect is off
[    2.641956] sd 11:0:0:0: [sdb] Mode Sense: 00 3a 00 00
[    2.641973] sd 11:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[    2.642046] scsi 17:0:0:0: Processor         Marvell  91xx Config      1.01 PQ: 0 ANSI: 5
[    2.653127]  sdb: sdb1 sdb3
[    2.653228] ata18.00: exception Emask 0x1 SAct 0x0 SErr 0x0 action 0x0
[    2.653265] ata18.00: irq_stat 0x40000001
[    2.653299] ata18.00: cmd a0/01:00:00:00:01/00:00:00:00:00/a0 tag 1 dma 16640 in
                        opcode=0x12 12 01 00 00 ff 00res 50/00:02:00:00:00/00:00:00:00:00/a0 Emask 0x1 (device error)
[    2.653306] sd 11:0:0:0: [sdb] Attached SCSI disk
[    2.653352] ata18.00: status: { DRDY }
[    2.655305] ata18: exception Emask 0x1 SAct 0x0 SErr 0x0 action 0x0 t4
[    2.655346] ata18: irq_stat 0x40000001