Date: Mon, 26 Apr 2010 21:04:40 -0700 From: Carl Johnson <carlj@peak.org> To: freebsd-questions@freebsd.org Subject: Re: How to determine /dev/ad* from mount label Message-ID: <87y6g9v8vb.fsf@cjlinux.localnet> In-Reply-To: <4BD6375B.6030500@giovannetti.ca> (Mark G.'s message of "Mon\, 26 Apr 2010 21\:01\:15 -0400") References: <4BD6375B.6030500@giovannetti.ca>
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"Mark G." <mark-fbsd-quest-10+20100426@giovannetti.ca> writes: > Hi, > > I've tried the mount, tunefs and df manuals, and don't know > where to look next. > > I am trying to find out what device, in terms of /dev/ad0s1a > and so on, is actually 'connected' to a label mounted file > system. Here is my fstab (from PC-BSD, by the way): > > # more /etc/fstab > # Device Mountpoint FStype Options Dump Pass > /dev/label/rootfs0 / ufs rw,noatime 1 1 > /dev/label/swap0 none swap sw 0 0 > /dev/label/var0 /var ufs rw,noatime 1 1 > /dev/label/usr0 /usr ufs rw,noatime 1 1 > procfs /proc procfs rw 0 0 > linprocfs /compat/linux/proc linprocfs rw 0 0 > tmpfs /tmp tmpfs rw,mode=1777 0 0 > > I just wanted to know if there was a utility to tell me > which actual device was mounted. I also tried camcontrol devlist > and atacontrol list. The latter allowed me to determine that > /dev/label/rootfs0 is ad2s1a based on the actual disk size > and a process of elimination. > > Does anyone know a magic incantation to output this label->device > mapping? Try looking at glabel(8). I don't know what option will list which is mounted, but 'glabel status' shows the names and what partitions they are associated with. -- Carl Johnson carlj@peak.org
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