Matt Domsch wrote: > On Mon, Aug 17, 2009 at 01:04:41PM -0700, Sebastian Gutierrez wrote: >> Hello >> >> I have a Poweredge R610 with the internal SAS 6iR raid controller and a >> SAS 5e HBA. It seems that the /dev/sd? devices keep getting reordered >> when I connect disks to the enclosures attached to the SAS HBA. I have >> tried a couple of iterations of udev rules and have not been able to get >> the boot devices to stay as their initial device name. > > the kernel's device name (e.g. /dev/sd?) is fundamentally arbitrary. > That is seems deterministic is purely accidental. > > > Instead of trying to fix the /dev/sd? names, use your udev rules to > create /dev/disk/whateveryouwant -> /dev/sd? such that the former > always is what your apps use, and udev maintains the symlink on your > behalf to the "proper" /dev/sd? device. > > >
Or just use the ones that are already there - on a RHEL 5.3 system there are [jhan...@carenath ~]$ ls -l /dev/disk/ total 0 drwxr-xr-x 2 root root 240 Aug 23 20:35 by-id drwxr-xr-x 2 root root 60 Aug 23 20:35 by-label drwxr-xr-x 2 root root 280 Aug 23 20:35 by-path drwxr-xr-x 2 root root 60 Aug 23 20:35 by-uuid I would suggest by-path might be the easiest. -- ----------------------------------------------------------------------- Jeff Hanson - [email protected] - Field Technical Analyst You can choose a ready guide in some celestial voice. If you choose not to decide, you still have made a choice. You can choose from phantom fears and kindness that can kill; I will choose a path that's clear I will choose freewill. - Lee/Lifeson/Peart _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
