Re: Which disk is ata4?
From: Andy Lutomirski <luto@amacapital.net>
Date: 2012-08-30 15:27:59
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On Thu, Aug 30, 2012 at 8:15 AM, Tim Nufire [off-list ref] wrote:
I'm not sure if there is a better way, but on Debian 5 "Squeeze" I look at the contents of the directory /dev/disk/by-path/ ls -l /dev/disk/by-path/ total 0 lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:00:1f.2-scsi-0:0:0:0 -> ../../sdae lrwxrwxrwx 1 root root 11 2012-08-08 14:42 pci-0000:00:1f.2-scsi-0:0:0:0-part1 -> ../../sdae1 lrwxrwxrwx 1 root root 11 2012-08-08 14:42 pci-0000:00:1f.2-scsi-0:0:0:0-part2 -> ../../sdae2 lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:02:04.0-scsi-0:0:0:0 -> ../../sda lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:02:04.0-scsi-0:1:0:0 -> ../../sdb lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:02:04.0-scsi-0:2:0:0 -> ../../sdc lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:02:04.0-scsi-0:3:0:0 -> ../../sdd lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:02:04.0-scsi-0:4:0:0 -> ../../sde lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:02:04.0-scsi-3:0:0:0 -> ../../sdf lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:02:04.0-scsi-3:1:0:0 -> ../../sdg lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:02:04.0-scsi-3:2:0:0 -> ../../sdh lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:02:04.0-scsi-3:3:0:0 -> ../../sdi lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:02:04.0-scsi-3:4:0:0 -> ../../sdj lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:02:04.0-scsi-4:0:0:0 -> ../../sdk lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:02:04.0-scsi-4:1:0:0 -> ../../sdl lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:02:04.0-scsi-4:2:0:0 -> ../../sdm lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:02:04.0-scsi-4:3:0:0 -> ../../sdn lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:02:04.0-scsi-4:4:0:0 -> ../../sdo lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:04:04.0-scsi-0:0:0:0 -> ../../sdp lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:04:04.0-scsi-0:1:0:0 -> ../../sdq lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:04:04.0-scsi-0:2:0:0 -> ../../sdr lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:04:04.0-scsi-0:3:0:0 -> ../../sds lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:04:04.0-scsi-0:4:0:0 -> ../../sdt lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:04:04.0-scsi-2:0:0:0 -> ../../sdu lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:04:04.0-scsi-2:1:0:0 -> ../../sdv lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:04:04.0-scsi-2:2:0:0 -> ../../sdw lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:04:04.0-scsi-2:3:0:0 -> ../../sdx lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:04:04.0-scsi-2:4:0:0 -> ../../sdy lrwxrwxrwx 1 root root 9 2012-08-08 14:42 pci-0000:04:04.0-scsi-3:0:0:0 -> ../../sdz lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:04:04.0-scsi-3:1:0:0 -> ../../sdaa lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:04:04.0-scsi-3:2:0:0 -> ../../sdab lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:04:04.0-scsi-3:3:0:0 -> ../../sdac lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:04:04.0-scsi-3:4:0:0 -> ../../sdad lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:06:04.0-scsi-0:0:0:0 -> ../../sdaf lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:06:04.0-scsi-0:1:0:0 -> ../../sdag lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:06:04.0-scsi-0:2:0:0 -> ../../sdah lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:06:04.0-scsi-0:3:0:0 -> ../../sdai lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:06:04.0-scsi-0:4:0:0 -> ../../sdaj lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:06:04.0-scsi-2:0:0:0 -> ../../sdak lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:06:04.0-scsi-2:1:0:0 -> ../../sdal lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:06:04.0-scsi-2:2:0:0 -> ../../sdam lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:06:04.0-scsi-2:3:0:0 -> ../../sdan lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:06:04.0-scsi-2:4:0:0 -> ../../sdao lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:06:04.0-scsi-3:0:0:0 -> ../../sdap lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:06:04.0-scsi-3:1:0:0 -> ../../sdaq lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:06:04.0-scsi-3:2:0:0 -> ../../sdar lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:06:04.0-scsi-3:3:0:0 -> ../../sdas lrwxrwxrwx 1 root root 10 2012-08-08 14:42 pci-0000:06:04.0-scsi-3:4:0:0 -> ../../sdat The SCSI ids are one less than ATA ids because they start at 0 rather than 1. So, ata4.00 is the same as scsi-3:0:0:0. On my system this means that ata4.00 is sdap.
...which presumably stops working as soon as there's a non-ATA SCSI device in the system. (It worked for me, I think, but there really ought to be a generic solution.) Again, what's apparently missing is a map between ata ports/links/devices and scsi hosts/targets/devices. --Andy