Re: Backup to CD-Rs and DVDs
On Saturday 29 January 2005 01:51, Carleton Vaughn wrote: Ian Moore wrote: Anyway, to backup /usr directly to a dvd(+rw), I use the this command: dump -0 -uL -C16 -B4589840 -P 'growisofs -speed=4 -Z /dev/dvd=/dev/fd/0 ' /usr This gives you a dvd or series of dvds with the dump file on them. You can then boot from CD2 (live system) and use restore to restore the data. If the link above is the one I think it is, it gives you an example restore command. I'm in the same boat as Xian. I want to backup to DVD so I can upgrade to 5.3. dump in 4.10 does not have a -P option, and growisofs says nothing about handling spanning, so how do I span my dump over multiple DVDs? dump -h0 -B 4589840 -S /usr says I'm going to need 6.18 tapes. I'm going to crack open a beer and just pipe it, to see what happens. Then some day if all goes well I will split /usr into /usr and /usr/home, 'cause this is ridiculous. Thanks. I have another machine running 4.9 (also without the -P option for dump) and the way I get round it is to create the dump on another disk in pieces then transfer them to another machine for burning. dump usual args -Bsize of dvd -f /home/usr.dump /usr /usr and /home are on different disks. Then when dump asks me if the next volume is ready I move /home/usr.dump to /home/usr/dump.1, then tell dump yes. And so on until dump has finished However I am having some issues with this. I transfer them to another machine, (checking the md5 of them is the same before and after transfer them), and test it with restore restore -Nxvb 2 -f usr.dump.1 and the first volume works fine, it says 'End-of-tape encountered'. I start the next volume and it tells me unexpected tape header abort? [yn] What could be doing this and how do I fix it? -- /Xian Never put off until tomorrow what you can avoid altogether unknown author ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Backup to CD-Rs and DVDs
On Sat, 29 Jan 2005 22:30, Xian wrote: On Saturday 29 January 2005 01:51, Carleton Vaughn wrote: Ian Moore wrote: Anyway, to backup /usr directly to a dvd(+rw), I use the this command: dump -0 -uL -C16 -B4589840 -P 'growisofs -speed=4 -Z /dev/dvd=/dev/fd/0 ' /usr This gives you a dvd or series of dvds with the dump file on them. You can then boot from CD2 (live system) and use restore to restore the data. If the link above is the one I think it is, it gives you an example restore command. I'm in the same boat as Xian. I want to backup to DVD so I can upgrade to 5.3. dump in 4.10 does not have a -P option, and growisofs says nothing about handling spanning, so how do I span my dump over multiple DVDs? dump -h0 -B 4589840 -S /usr says I'm going to need 6.18 tapes. I'm going to crack open a beer and just pipe it, to see what happens. Then some day if all goes well I will split /usr into /usr and /usr/home, 'cause this is ridiculous. Thanks. I have another machine running 4.9 (also without the -P option for dump) and the way I get round it is to create the dump on another disk in pieces then transfer them to another machine for burning. dump usual args -Bsize of dvd -f /home/usr.dump /usr /usr and /home are on different disks. Then when dump asks me if the next volume is ready I move /home/usr.dump to /home/usr/dump.1, then tell dump yes. And so on until dump has finished However I am having some issues with this. I transfer them to another machine, (checking the md5 of them is the same before and after transfer them), and test it with restore restore -Nxvb 2 -f usr.dump.1 and the first volume works fine, it says 'End-of-tape encountered'. I start the next volume and it tells me unexpected tape header abort? [yn] What could be doing this and how do I fix it? That was how I was considering doing backups in DVD sized chunks until I found out the -P option in 5.3. I've just tried doing it in 5.3 works. Here's what I actually did: %sudo dump -1 -B 5 -f /mnt/backups/var.dump /var When prompted for tape 2, in a second xterm I did: %sudo mv var.dump var.dump.1 Then back in xterm1, I said yes to the continue prompt. The dump completed. To restore I did: %restore -Nxvf /mnt/backups/var.dump.1 When asked which tape to use, I said 1 When prompted for tape 2, in xterm2 I did: %sudo mv var.dump.1 var.dump.a %sudo mv var.dump var.dump.1 Then back in xterm1: End-of-tape encountered You have read volumes: 1 Specify next volume #: 2 Mount tape volume 2 Enter ``none'' if there are no more tapes otherwise enter tape name (default: /mnt/backups/var.dump.1) none extract file ./db/entropy/saved-entropy.6 snip extract file ./tmp/kdecache-root/ksycoca Add links Set directory mode, owner, and times. set owner/mode for '.'? [yn] n So it works in 5.3, maybe there is a bug in the old dump or restore program? NB, I didn't need to use -b 2 in the restore command. Perhaps you should try it without that switch. Cheers, -- Ian GPG Key: http://homepages.picknowl.com.au/imoore/imoore.asc pgpTsHuZPUT7d.pgp Description: PGP signature
Re: Backup to CD-Rs and DVDs.
I'm in the same boat as Xian. I want to backup to DVD so I can upgrade to 5.3. dump in 4.10 does not have a -P option, and growisofs says nothing about handling spanning, so how do I span my dump over multiple DVDs? Then some day if all goes well I will split /usr into /usr and /usr/home, 'cause this is ridiculous. There is 2 limitations here: - The dump's option '-P' is relatively new, and not supported on old releases; - A file can't be larger than 2Gb using an ISO 9660 file system. Knowing these 2 points here, here is a sh(1) shell script than i use and which do the following: 1/ Backup a remote FreeBSD system on a local DVD writer; 2/ Currently 5.X since i hardcoded the dump's option '-L') but that is easily bypassed; 3/ Over ssh; 4/ Using a remote user which must be in the group 'operator'; 5/ Because i use the same grown iso fs to hold all the backuped fs, this script need a local temporary space which size just need to be the size of the larger compressed remote fs (generally /usr or /home) not a sum of all of these; 6/ Automatically get the fs to backup from the remote fstab (begining with the root fs). As it is a little _home_script_, there is some caveats to know: - It must launch as root from the local system in order to be able to write to the local DVD burner; - It assume that that the larger compressed remote fs is lesser than the 2Gb limitation (you can for example set the nodump flag on /usr/ports/distfiles/*, if this is not an issue for you, to decrease the size of the /usr dump); - Some commands/options are hardcoded; - May be extended to managed more than one copy of each backuped fs if there is sufficiently space left on the DVD... Oh, yes... to restore just do the following (/home for example): # mount -t cd9660 /dev/cd0 /cdrom # cd /home; gzip -dc /cdrom/home/dump.gz | restore -ivf - -- -jpeg. bckp2dvd.sh Description: Binary data ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Backup to CD-Rs and DVDs
On Fri, 28 Jan 2005 05:49, Xian wrote: On Thursday 27 January 2005 12:39, Xian wrote: On Thursday 27 January 2005 10:37, Ian Moore wrote: Hope that's the kind of thing you are after. http://www.freebsd.org/cgi/cvsweb.cgi/src/sbin/dump/main.c?rev=1.59co nt en t-type=text/x-cvsweb-markup Cheers, That's exactly what I'm looking for thanks. I tried it with a CD-RW like this dump -0 -L -C16 -B716800 -P 'burncd -e blank data - fixate' /var and it works well. I'll try DVDs when I have some. THANKS :D Glad I could help :-) I just found that I need to use the -b 2 switch with restore, does that mean I need to use it with dump as well? I'm not sure, but if you are able to successfully retore dumps made without -b 2, then I guess you don't need t!. Cheers, -- Ian Moore GPG Key: http://homepages.picknowl.com.au/imoore/imoore.asc pgp77xufpFUig.pgp Description: PGP signature
Re: Backup to CD-Rs and DVDs
Ian Moore wrote: Anyway, to backup /usr directly to a dvd(+rw), I use the this command: dump -0 -uL -C16 -B4589840 -P 'growisofs -speed=4 -Z /dev/dvd=/dev/fd/0 ' /usr This gives you a dvd or series of dvds with the dump file on them. You can then boot from CD2 (live system) and use restore to restore the data. If the link above is the one I think it is, it gives you an example restore command. I'm in the same boat as Xian. I want to backup to DVD so I can upgrade to 5.3. dump in 4.10 does not have a -P option, and growisofs says nothing about handling spanning, so how do I span my dump over multiple DVDs? dump -h0 -B 4589840 -S /usr says I'm going to need 6.18 tapes. I'm going to crack open a beer and just pipe it, to see what happens. Then some day if all goes well I will split /usr into /usr and /usr/home, 'cause this is ridiculous. Thanks. -- Carleton Vaughn College Park, Georgia, USA ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Backup to CD-Rs and DVDs
On Thu, 27 Jan 2005 11:30, Xian wrote: I don't have any DVD-Rs of any format yet so I was messing about with CDs. I found I could burn files to the CD in a variety of ways but I can't get them back again. I've used dd and burncd to put the file onto a CD and dd sometimes gets something back too, but never works properly. Any ideas how to do this properly? I think this is what you are looking for (lists.freebsd.org seems to down at the moment, so I can't confirm this is the thread I think it is): http://lists.freebsd.org/pipermail/freebsd-questions/2004-November/064560.html Anyway, to backup /usr directly to a dvd(+rw), I use the this command: dump -0 -uL -C16 -B4589840 -P 'growisofs -speed=4 -Z /dev/dvd=/dev/fd/0 ' /usr This gives you a dvd or series of dvds with the dump file on them. You can then boot from CD2 (live system) and use restore to restore the data. If the link above is the one I think it is, it gives you an example restore command. Hope that's the kind of thing you are after. Cheers, -- Ian GPG Key: http://homepages.picknowl.com.au/imoore/imoore.asc pgpyTrJYYrnPe.pgp Description: PGP signature
Re: Backup to CD-Rs and DVDs
On Thu, 27 Jan 2005 20:23, Ian Moore wrote: On Thu, 27 Jan 2005 11:30, Xian wrote: I don't have any DVD-Rs of any format yet so I was messing about with CDs. I found I could burn files to the CD in a variety of ways but I can't get them back again. I've used dd and burncd to put the file onto a CD and dd sometimes gets something back too, but never works properly. Any ideas how to do this properly? I think this is what you are looking for (lists.freebsd.org seems to down at the moment, so I can't confirm this is the thread I think it is): http://lists.freebsd.org/pipermail/freebsd-questions/2004-November/064560.h tml Sorry, that's not the right link, try this instead: http://www.freebsd.org/cgi/cvsweb.cgi/src/sbin/dump/main.c?rev=1.59content-type=text/x-cvsweb-markup It's not the link I had originally, why didn't I bookmark it? :( Cheers, Ian Anyway, to backup /usr directly to a dvd(+rw), I use the this command: dump -0 -uL -C16 -B4589840 -P 'growisofs -speed=4 -Z /dev/dvd=/dev/fd/0 ' /usr This gives you a dvd or series of dvds with the dump file on them. You can then boot from CD2 (live system) and use restore to restore the data. If the link above is the one I think it is, it gives you an example restore command. Hope that's the kind of thing you are after. http://www.freebsd.org/cgi/cvsweb.cgi/src/sbin/dump/main.c?rev=1.59content-type=text/x-cvsweb-markup Cheers, -- Ian GPG Key: http://homepages.picknowl.com.au/imoore/imoore.asc pgp0mjNiuv7fy.pgp Description: PGP signature
Re: Backup to CD-Rs and DVDs
On Thursday 27 January 2005 10:37, Ian Moore wrote: Hope that's the kind of thing you are after. http://www.freebsd.org/cgi/cvsweb.cgi/src/sbin/dump/main.c?rev=1.59conten t-type=text/x-cvsweb-markup Cheers, That's exactly what I'm looking for thanks. I tried it with a CD-RW like this dump -0 -L -C16 -B716800 -P 'burncd -e blank data - fixate' /var and it works well. I'll try DVDs when I have some. THANKS :D -- /Xian One had to cram all this stuff into one's mind for the examinations, whether one liked it or not. This coercion had such a deterring effect on me that, after I had passed the final examination, I found the consideration of any scientific problems distasteful to me for an entire year. Albert Einstein ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Backup to CD-Rs and DVDs
On Thursday 27 January 2005 12:39, Xian wrote: On Thursday 27 January 2005 10:37, Ian Moore wrote: Hope that's the kind of thing you are after. http://www.freebsd.org/cgi/cvsweb.cgi/src/sbin/dump/main.c?rev=1.59cont en t-type=text/x-cvsweb-markup Cheers, That's exactly what I'm looking for thanks. I tried it with a CD-RW like this dump -0 -L -C16 -B716800 -P 'burncd -e blank data - fixate' /var and it works well. I'll try DVDs when I have some. THANKS :D I just found that I need to use the -b 2 switch with restore, does that mean I need to use it with dump as well? -- /Xian Forbidden fruit creates many jams Unknown Author ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
