Date: Wed, 5 Jul 2000 22:39:32 -0700 From: "Crist J. Clark" <cristjc@earthlink.net> To: Willem Brown <willem@brwn.org> Cc: "Michael T. Stolarchuk" <mts@off.to>, questions@FreeBSD.ORG Subject: Re: read only file system? Message-ID: <20000705223931.C795@dialin-client.earthlink.net> In-Reply-To: <20000705205105.F28124@snoopy.brwn.org>; from willem@brwn.org on Wed, Jul 05, 2000 at 08:51:05PM %2B0200 References: <20000705174745.B28124@snoopy.brwn.org> <200007051642.MAA23718@off.to> <20000705205105.F28124@snoopy.brwn.org>
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On Wed, Jul 05, 2000 at 08:51:05PM +0200, Willem Brown wrote: > Hi, > > You got me. It's not mounted or anything like that is it? and what > is the permissions on /dev/ad1? What happens when you try the raw device > /dev/rad0 and /dev/rad1 Remember that the block devices went away with the switch to the ad device, # ls -l /dev/ad0 /dev/rad0 crw-r----- 1 root operator 116, 0x00010002 Jun 3 16:49 /dev/ad0 crw-r----- 1 root operator 116, 0x00010002 Jun 3 16:49 /dev/rad0 There only are "raw" character devices now. Plus, the idea to use da0c, it seems to me that would not work unless the disk has been labeled (disklabel(8)) first, no? Anyway, is /dev/ad1 read-write? It's not mounted right? > On Wed, Jul 05, 2000 at 12:42:50PM -0400, Michael T. Stolarchuk wrote: > > > > thanks willem, but here's the results: > > > > alpha0# dd if=/dev/ad0 of=/dev/ad1 bs=512k > > dd: /dev/ad1: Read-only file system > > 1+0 records in > > 0+0 records out > > 0 bytes transferred in 0.062841 secs (0 bytes/sec) > > alpha0# > > > > > > mts. > > > > In message <20000705174745.B28124@snoopy.brwn.org>, Willem Brown writes: > > >Hi, > > > > > >Try using the /dev/ad1 device. /dev/ad1c refers to a slice on the > > >drive that refers to all of the disk space.. > > > > > >The "c" happens to stand for "complete". > > > > > >Regards > > >Willem Brown > > > > > >On Wed, Jul 05, 2000 at 11:38:39AM -0400, Michael T. Stolarchuk wrote: > > >> > > >> I'd like to make copies of complete drives, starting at > > >> block 0 to the last block of the physical volume. > > >> I used to be able to do that, but now i get EROFS errors, > > >> and don't know how to get around them... > > >> > > >> These are ide drives, we bought a bunch of them to > > >> replicate and use to boot and run some 8 alphas... > > >> (we don't use the drives for performance, we've got > > >> fast scsi for that), so all the drives we want to > > >> copy onto are the same hardware devices.... > > >> > > >> We get the error when we: > > >> > > >> dd if=/dev/ad0c of=/dev/ad1c > > >> or > > >> dd if=/dev/rad0c of=/dev/rad1c > > >> > > >> > > >> i belive we're getting the EROFS cause of trying to write > > >> disk label data... > > >> > > >> mts. > > >> > > >> > > >> To Unsubscribe: send mail to majordomo@FreeBSD.org > > >> with "unsubscribe freebsd-questions" in the body of the message > > >> > > > > > >-- > > > /* =============================================================== */ > > > /* Linux, FreeBSD, NetBSD, OpenBSD. The choice is yours. */ > > > /* =============================================================== */ > > > > > >Colvard's Logical Premises: > > > All probabilities are 50%. Either a thing will happen or it > > > won't. > > > > > >Colvard's Unconscionable Commentary: > > > This is especially true when dealing with someone you're > > > attracted to. > > > > > >Grelb's Commentary > > > Likelihoods, however, are 90% against you. > > -- > /* =============================================================== */ > /* Linux, FreeBSD, NetBSD, OpenBSD. The choice is yours. */ > /* =============================================================== */ > > Learn to be sincere. Even if you have to fake it. > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message -- Crist J. Clark cjclark@alum.mit.edu To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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