On Aug 23, 2007, at 10:32 AM, Stewart Stremler wrote:
I like SCSI's manually-set ids. And Sun's controller/target//slice notation, actually, although it took me awhile to get used to it.
SCSI's notion of IDs is very nice, but when your kernel may arbitrarily decide to re-assign what /dev/sda is, based on whether or not you have a USB or Firewire hard drive plugged in when the system boots, and what order your device drivers load in, and what order the PCI bus is scanned, you very quickly tire of "floating" devices.
Adding an additional SCSI controller to an existing host is a perfect demonstration of this.
On one system, we have an external RAID system hooked up by SCSI. Every time we add a new logical volume (i.e., add a RAID volume to the cabinet), it comes ahead of the internal system disks in Linux kernel device enumeration. The only thing that saves us is that / boot is mounted by LABEL, and everything else is LVM.
If not using LVM (which is its own bag of tricks) I very much prefer to mount by UUID.
Gregory -- Gregory K. Ruiz-Ade <[EMAIL PROTECTED]> OpenPGP Key ID: EAF4844B keyserver: pgpkeys.mit.edu -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
