Date: Fri, 05 Dec 2008 10:00:27 +0100 From: Bartosz Stec <admin@kkip.pl> To: freebsd-stable@freebsd.org Subject: Re: Burning DVD with files>4GB from console Message-ID: <4938EDAB.70809@kkip.pl> In-Reply-To: <20081204191957.GA32007@Grumpy.DynDNS.org> References: <4937A786.9080403@kkip.pl> <20081204154507.GA18645@Grumpy.DynDNS.org> <493801F5.2050009@math.missouri.edu> <493816EE.8010408@comcast.net> <20081204191957.GA32007@Grumpy.DynDNS.org>
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David Kelly pisze:
> On Thu, Dec 04, 2008 at 12:44:14PM -0500, Steve Polyack wrote:
>
>> Not too say you're .iso images can't be >2GB/4GB, but I'm pretty sure
>> the ISO9660 standard is limited to a 2GB maximum file size (for files
>> within the .iso). You must use UDF to burn files of greater size.
>> mkisofs(8) seems to support this, if only in alpha/hybrid stage:
>>
>> -udf Include UDF support in the generated filesystem image. UDF sup-
>> port is currently in alpha status and for this reason, it is not
>> possible to create UDF only images.
>>
>
> It would seem then that the O.P. who is already splitting his backup
> into 4.3GB chunks should split backups into sub-2GB chunks.
> 4,700,000,000 is the standard DVD size, I'd shoot for chunks of 4.5E9/3
> so as to have about 200MB of headroom per DVD.
>
> growisofs will write 3 files to the DVD just as easily as one. The magic
> of growisofs is that it invokes mkisofs on the fly. And also that
> cdrecord had obnoxious (and broken) licensing in years past when I last
> tried it.
>
>
Yes, I know that. My reasons for keeping one file on DVD are just for
making my life easier.
If I want to restore some files from filesystem backup (they are made
via pipeline dump | gunzip | split) I have to copy all files from DVDs
wchich includes needed filesystem and then I type:
cat file1 file2 file3 ... fileN | gunzip | restore -if -
And yes, I know that tapes are much better for tasks like this but for
now I just have to use DVDs :)
Now imagine backup placed on 10 DVDs. With single file on DVD I have 10
files to manage, not 30. I know there're workarounds but with more files
I probably will need some script to restore files rather than do it
manually. That's the reason I asked if there's a possibility to burn it
this way from FreeBSD.
--
Bartosz Stec
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