Category: Questions

Got a question about hard drives? You’ve come to the right place. This category is dedicated to answering the most common (and complex) queries about HDD technology.

Mapping ata device number to logical device name

Question: I’m getting kernel messages about ‘ata3’. ?How do I figure out what device (/dev/sd_) that corresponds to? Answer: From http://www.phuket-data-wizards.com/blog/2011/07/16/matching-linux-ata-numbers-to-the-device-names/:The command grep ‘’ /sys/class/scsi_host/host{0..9}/unique_idwill provide output like/sys/class/scsi_host/host0/unique_id:1/sys/class/scsi_host/host1/unique_id:2/sys/class/scsi_host/host2/unique_id:0/sys/class/scsi_host/host3/unique_id:0/sys/class/scsi_host/host4/unique_id:3/sys/class/scsi_host/host5/unique_id:4/sys/class/scsi_host/host6/unique_id:5/sys/class/scsi_host/host7/unique_id:6so we can…