On Mon, Oct 25, 2004 at 12:26:49PM +0100, Ben Hutchings wrote: > David Berg wrote: > >Need some help hammering out a tar/mkisofs command to backup my disks to > >dvd. I'm looking to burn two root level directories (/home,/var and > >/usr, /) to they're own dvd. Problem is I don't have room to build the > >tarball or iso on the hard disk before I burn it. Using a command such > >as > > > >mkisofs -R -o backup.iso /home /var > > > >looses some directory structure > >and if I use graft points I loose directory ownership & permission > >information. At least I haven't yet figured out how not to. I also > >can't figure out how to make mkisofs read from stdin for its directories > >so that I can have tar pipe its output directly to mkisofs. > > You need to use the -stream-media-size option. RTFM for the details. >
The one option I only skimmed over. I can't seem to find details on number of sectors though. I would assume, at least in this case, that I want to provide a value that would encompas the whole DVD. I see 333000 a couple times on the net for CDs but I don't see how this number is calculated or any numbers for DVDs. > >I'd rather use just mkisofs and have each individual file than one tarball > >but I don't want to run into any problems with restoring from backup > >either since I plan on doing it shortly (only using half of harddrive > >and fdisk for some reason won't let me put a partition on the rest) > > Did you by any chance create 4 primary partitions of which none is > extended? If so then you should be able to fix the problem by deleting > the swap partition and creating an extended partition. Having done > that, you can create an unlimited number of "logical" partitions > (including a new swap partition). > No, I've used computers long enough to know better than that. Partition table copied from fdisk: Disk /dev/hda: 20.4 GB, 20490559488 bytes 255 heads, 63 sectors/track, 2491 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/hda1 1 31 248976 83 Linux /dev/hda2 32 39 64260 82 Linux swap /dev/hda3 40 511 3791340 83 Linux /dev/hda4 512 1138 5036377+ 5 Extended /dev/hda5 512 894 3076416 83 Linux /dev/hda6 895 1016 979933+ 83 Linux /dev/hda7 1017 1138 979933+ 83 Linux Try to create a new sector and it returns: No free sectors available I didn't realize there was a limit to the number of logical partitions or I would have made them much larger to begin with. I find it odd though that the partition table would be full at 7 and not 8 or 16 etc. [EMAIL PROTECTED]:~$ df Filesystem Size Used Avail Use% Mounted on /dev/hda1 236M 50M 175M 23% / tmpfs 63M 0 63M 0% /dev/shm /dev/hda3 3.6G 2.7G 785M 78% /usr /dev/hda5 2.9G 2.8G 42M 99% /home /dev/hda6 942M 134M 761M 15% /var /dev/hda7 942M 172K 894M 1% /tmp I could grow /var without much trouble but I'd like to grow /usr as well and that just isn't going to happen. Thanks. Dave -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
