Date: Mon, 18 Dec 2000 12:17:36 -0800 From: Eric Dannewitz <ericdano@jazz-sax.com> To: "Ronald F. Guilmette" <rfg@monkeys.com> Cc: Christopher Farley <chris@northernbrewer.com>, freebsd-questions@FreeBSD.ORG Subject: Re: Backing up a file system... How do I preserve the file flags? Message-ID: <3A3E70E0.9AA146F8@jazz-sax.com> References: <13531.977170030@monkeys.com>
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Why not just RAID them? "Ronald F. Guilmette" wrote: > In message <20001218134403.B27688@northernbrewer.com>, you wrote: > > >Ronald F. Guilmette (rfg@monkeys.com) wrote: > > > >> So how am I supposed to preserve them when making my full backups? > > > >man 8 dump > > Nope. I don't think this solves my problem, but maybe I should have been > more specific. > > Here's what I would REALLY like to do... > > I have two 4GB SCSI disk drives in one particular system I own. The first > drive is full of Good Stuff[tm] that I want to mak backups of nightly. > The second drive is current empty of devoid of useful contents. > > Assuming that I have already made a ufs filesystem on the target drive, I > would like to be able to have a nightly cron job that does a cpio copy > from one drive to the other and then have the other drive be something > that, at a moment's notice, I could boot up and run with (e.g. when and > if the first drive crashes). > > But this doesn't seem to be something that is supported by dump(8). The > man page seems to indicate that even if dump(8) is directed to place the > backup copy of your data onto a disk drive, that it will just be treating > that (output) disk drive as if it where just a tape drive: > > -f file > Write the backup to file; file may be a special device file like > /dev/rsa0 (a tape drive), /dev/fd1 (a floppy disk drive), an or- > dinary file, or `-' (the standard output). Multiple file names > may be given as a single argument separated by commas. Each file > will be used for one dump volume in the order listed; if the dump > requires more volumes than the number of names given, the last > file name will used for all remaining volumes after prompting for > media changes. If the name of the file is of the form > ``host:file'', or ``user@host:file'', dump writes to the named > file on the remote host using rmt(8). The default path name of > the remote rmt(8) program is /etc/rmt; this can be overridden by > the environment variable RMT. > > This is not what I want. I want the output device to be a disk drive, and > one with a live filesystem already on it. > > I hope that I have made my desires more clear now. > > Anyway, the only way I can see to do what I want to do is with something > like cpio (or maybe tar, but cpio is probably better for this sort of thing). > The only problems is that it looks to me like cpio will fail to copy over > the extra file flags. :-( > > I wish there was a quick solution for that. > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message -- Back up my hard disk? I can't find the reverse switch! Eric Dannewitz - Adventurer, saxophonist, good-timer (crook? quite possibly), clarinetist, manic self-publicist, part-time flautist(flutist?), macintosher, and often thought to be completely out to lunch. http://www.jazz-sax.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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