Yep. Red Hat used to setup systems where "LABEL=/1" was the root mount point. I think they've dropped the habit, now. I know I got into fights with it trying to make an initrd on an LVM volume, although that wasn't really the fault of the label.
It's a matter of taste which option to use. However, as a general rule: UUID is when it absolutely, positively must be this, and only this instance of the filesystem. As my old OLE book once said about their MS relatives, GUIDs, "the chances of two items having the same GUID are about the same as a bunch of atoms rushing together in space to form a small walnut". :) Labels are good when it's the semantics that count. If, for example when you really truly /want/ a "/HOME" partition or the like. Labels are not unique, however, and I'd have to RTFM on how conflicts are resolved. Hardwiring USB device IDs is fairly simple, but problems can arise if the devices are plugged in differently. You can tie IDs to specific peripherals irrespective of the port the device is plugged into, since the mechanism is quite flexible, including the ability to incorporate user-defined scripts. However, unless the hardware itself has some unique property, I wouldn't recommend it. This is for keeping track of which device is /dev/dvdrw1 and /dev/dvdr2 and stuff like that. On Tue, 2011-02-08 at 09:18 -0500, Dan Bidleman wrote: > if using ext fs, you can use e2label and in the fstab you put > LABEL="drive_name" as the device > > To do UUID as mentioned below: > > just check your blkid by querying the partition using blkid as root: > # blkid /dev/sda1 > /dev/sda1: UUID="280cebd3-f655-df94-cb20-1669f728008a" > TYPE="linux_raid_member" > > then in fstab use UUID="your_uuid_output" as the device > > > On 02/07/11 16:20, Tim Holloway wrote: > > Yep. Mount on the filesystem's UUID instead of the device name. > > > > On Mon, 2011-02-07 at 16:00 -0500, Whit Hansell wrote: > >> Hey guys. Picked up an external drive a few days ago and set it up just > >> fine. Using AMD64 Lenny on Assus board. External drive is a bakup > >> drive w usb connection and separate p/s. > >> > >> Have two hd's on box plus this external drive. Use linux on one hd, XP > >> on a separate drive and reboot back and forth on occasion as needed. > >> Partitioned new external to reduce Windows partition and add Linux > >> partition. All works fine. No problemo' there. No problemo' w. other > >> situation either. > >> > >> But where I am having problem is that when I come back into linux from > >> XP, a restart from XP, linux changes the mount point on my usb various > >> drives, externala and stick drives which are also attached. > >> > >> Am using rsync in a script I wrote and so when I want to backup it's > >> easy, except now the mount point is different. > >> > >> Is there any way to lock in the mount point on the external drives by > >> editing a file somewhere? I've googled all over and all I can find is > >> people having problems with the name being changed, not the mount > >> point. The name in fstab is the same (/dev/sdd2) and the drive info. > >> AMD64 automounts the drive and sticks an icon in the tray automatically > >> on bootup but, again, changes the mount point so when I try to run my > >> sccript, it's no longer looking at the correct usbport. I am not > >> moving the drives at all. The system is changing the usb port names on > >> reboot all by itself. Usb0, Usb1,Usb2, etc. > >> > >> I assume someone has added an external usb drive and had the same > >> problem and am just wondering how you solved it. Thanking you in > >> advance for any help. > >> > >> fstab entry: > >> /dev/sdd2 /media/usb0 ext3 user,noauto,rw 0 0 > >> > >> script lines: > >> #/bin/bash > >> rsync -vrlptg --delete /home/whit/ /media/usb0/home/whit > >> > >> Again, this worked fine before my reboot, but now the drive /dev/sdd2 > >> is on mountpoint /media/usb1, not /media/ usb0. > >> > >> gracias amigos, por favor. > >> > >> Whit > >> > >> > >> --------------------------------------------------------------------- > >> Archive http://marc.info/?l=jaxlug-list&r=1&w=2 > >> RSS Feed http://www.mail-archive.com/[email protected]/maillist.xml > >> Unsubscribe [email protected] > > > > > > > > --------------------------------------------------------------------- > > Archive http://marc.info/?l=jaxlug-list&r=1&w=2 > > RSS Feed http://www.mail-archive.com/[email protected]/maillist.xml > > Unsubscribe [email protected] > > > > --------------------------------------------------------------------- Archive http://marc.info/?l=jaxlug-list&r=1&w=2 RSS Feed http://www.mail-archive.com/[email protected]/maillist.xml Unsubscribe [email protected]
