Hi. On Tue, Sep 20, 2016 at 08:03:46PM +0000, ch_e...@yahoo.com wrote: > Hi > Could someone please advise me the best way to ensure a particular hard disk > (SATA) always appears at a specific device node, i.e how can I be sure > /dev/sdb for example is always going to refer to a specific drive even if > others are added or removed? > UUIDs only apply to partitions, is there no way to do a similar thing for a > physical disk? > I have some existing partitioned and formatted disks in a server which I want > to plug into another machine and move the services over to a VM
It's possible, although unless you're trying to change device's permissions permanently you'd better use those /dev/disk/by-id symlinks instead. What you'd need is a custom udev rule like this (in a single line): KERNEL=="sd*", BUS=="scsi", PROGRAM=="/lib/udev/scsi_id -g -d $devnode", RESULT==<UUID>, NAME=<devicename> Where device UUID can be obtained by: /lib/udev/scsi_id -g <your_block_device_here> Another dirty hack (as it's not intended to be used this way) whould be configuring multipathing with a single path representing your disk device. Reco
