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Date: Thu, 30 Aug 2012 08:27:35 -0700 From: Andy Lutomirski <luto@...capital.net> To: Tim Nufire <linux_ide_tim@...nk.com> Cc: linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org Subject: Re: Which disk is ata4? On Thu, Aug 30, 2012 at 8:15 AM, Tim Nufire <linux_ide_tim@...nk.com> 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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