Patrick Mansfield wrote: > Here is some /dev, lsscsi and scsi_id output on a SLES9 system (rpm > udev-021-36.55). by-path is basically pci and scsi bus_id's; by-id is > basically scsi_id plus partition output. > > [Uh oh, the by-path output looks broken! It should be scsi-1:0:0:0 pointing to sdc not scsi-0:0:0:0, but this shows the /dev structure.] > > I hope this clears things up: > > elm3a47:~ # ls -l /dev/disk/by-path | grep sdc > lrwxrwxrwx 1 root root 9 Oct 5 08:18 pci-0000:01:01.1-scsi-0:0:0:0 -> ../../sdc > lrwxrwxrwx 1 root root 10 Oct 5 08:18 pci-0000:01:01.1-scsi-0:0:0:0p1 -> ../../sdc1 > lrwxrwxrwx 1 root root 10 Oct 5 08:18 pci-0000:01:01.1-scsi-0:0:0:0p2 -> ../../sdc2 > lrwxrwxrwx 1 root root 10 Oct 5 08:18 pci-0000:01:01.1-scsi-0:0:0:0p3 -> ../../sdc3 > > elm3a47:~ # ls -l /dev/disk/by-id | grep sdc > lrwxrwxrwx 1 root root 9 Oct 5 08:18 320000004cf311121 -> ../../sdc > lrwxrwxrwx 1 root root 10 Oct 5 08:18 320000004cf311121p1 -> ../../sdc1 > lrwxrwxrwx 1 root root 10 Oct 5 08:18 320000004cf311121p2 -> ../../sdc2 > lrwxrwxrwx 1 root root 10 Oct 5 08:18 320000004cf311121p3 -> ../../sdc3 > > elm3a47:~ # lsscsi | grep sdc > [1:0:0:0] disk IBM-ESXS ST318453FC F B953 /dev/sdc > > elm3a47:~ # ls -l /sys/block/sdc/device > lrwxrwxrwx 1 root root 0 Oct 5 08:18 /sys/block/sdc/device -> ../../devices/pci0000:00/0000:00:1f.0/0000:01:01.1/host1/1:0:0:0 > > elm3a47:~ # scsi_id -g -s /block/sdc > 320000004cf311121 > Those are the names I'm trying to free people from. OK, multipath1 - multipath5000 aren't exactly friendly (but how else are you going to name 5000 disks - there aren't that many Simpsons characters!) but they're are a /lot/ easier to deal with than those I can see there. -- patrick -- dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
