Date: Fri, 16 Oct 2009 22:21:29 +0300 From: Manolis Kiagias <sonicy@otenet.gr> To: PJ <af.gourmet@videotron.ca> Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: GEOM label clarification Message-ID: <4AD8C7B9.8030108@otenet.gr> In-Reply-To: <4AD8C62C.2060009@videotron.ca> References: <4AD8B65C.9020603@videotron.ca> <4AD8B9A9.7030306@otenet.gr> <4AD8C62C.2060009@videotron.ca>
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PJ wrote: > Manolis Kiagias wrote: > >> PJ wrote: >> >> >>> If I understand correctly from the manual, giving the labels their slice >>> name (/dev/label/rootfs rather than /dev/ad4s1a) will assure that >>> regardless of the disk, the boot will be from the disk being booted and >>> not from another disk as happened to me recently - the fstab on disk ad4 >>> was referncing ad12 so the boot was from ad12 rather than ad4. >>> The handbook says: >>> "By permanently labeling the partitions on the boot disk, the system >>> should be able to continue to boot normally, even if the disk is moved >>> to another controller or transferred to a different system. For this >>> example, it is assumed that a single ATA disk is used, which is >>> currently recognized by the system as ad0." >>> If the disk is moved to another system, it may no longer be ad0... So >>> will it still boot correctly? >>> >>> >>> >>> >> In short, yes. I do this routinely all the time. >> Assuming of course that the device is connected to a controller that >> FreeBSD recognizes. >> This should be a non-issue for standard ATA/SATA disks. >> >> >> >>> Or should the ufsid labels be used? >>> >>> >>> >>> >> The ufsid is also an option if you do not wish to create the labels >> yourself. >> The advantage of user-created labels is that they are not 'cryptic' like >> the ufsid ones >> and you may actually remember them :) >> >> >> >>> Will both of these contortions work? >>> >>> >>> >> Yes, both will do. >> >> >> > Thanks for the reassurance. Now to start labelling. Uh.. I guess that > means that if I label 1 disk and then clone it to several others, they > wil all work from any system... Well, I guess I'll try it. Thanks again. > > > How are going to clone it? Will the clone also copy the labels? For example, if doing a dump / restore (which I often do) I recreate the partitions manually, newfs them, label them and then restore the contents. In many cases I use a live (Fixit) system for this.
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