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Re: [Bug-xorriso] bug with handling symbolic links?
From: |
Joerg Meyer |
Subject: |
Re: [Bug-xorriso] bug with handling symbolic links? |
Date: |
Sun, 8 Mar 2015 17:37:02 +0100 |
Hi Thomas,
Ah OK, I thought the Joliet tree would also automatically be recreated
by "-changes_pending yes" if found to be present in the previous session.
With -joliet on I get this output from the xorriso run
[...]
ISO image produced: 53550 sectors
Written to medium : 53728 sectors at LBA 2143488
[...]
and have these numbers
-rw-r--r-- 1 root root 4390518784 Mar 8 17:13 -find / -sort_lba -exec
report_lba
-rw-r--r-- 1 root root 4499898368 Mar 8 17:14 gentoo-201501-1.3.9.iso
>>> 4390518784 / 2048
2143808
>>> (4499898368 - 4390518784)
109379584
>>> (4499898368 - 4390518784) / 2048
53408
So it's now some ~4MB larger than the original estimate
>>> 51709 * 2048
105900032
(I have rerun -find / -sort_lba -exec report_lba on -find / -sort_lba -exec
report_lba just to be sure, medium ist DVD+R.)
Cool to gain more and more understanding of how low-level data storage on
optical media works ;-)
Thanks & best wishes,
Jörg.
On 08 Mar 2015, at 17:00, Thomas Schmitt <address@hidden> wrote:
> Hi,
>
>> xorriso -for_backup -dev gentoo-201501-1.3.9.iso -changes_pending yes
>> [...]
>> I think the multisession overhead of 68,747,264 bytes [...]
>> is about two thirds of what to expect from [...]
>> (51,709 * 2048 = 105,900,032)
>
> That's very suspicious. Hrmmm ....
>
> ... a few days ago you proposed
>
>>> -joliet on -volid test-rebuild \
>
> My proposal about -dev does not produce a Joliet tree yet.
> If your original ISO was made with -joliet "on", then please
> repeat the experiment with Joliet production
>
> dd if=/dev/sr0 bs=2048 of=gentoo-201501-1.3.8.iso
> xorriso -for_backup -joliet on -dev gentoo-201501-1.3.9.iso \
> -changes_pending yes
>
> Check whether the growth is very near to the estimation
> of 105 MB. About everything that's stored between first
> session start and first data file of the session should
> be re-produced in ithe add-on session. First session starts
> at block 0 or block 32, depending on medium type and xorriso
> settings.
> So not much more than 64 KB of difference would be plausible
> here.
>
>
> Have a nice day :)
>
> Thomas
>
- Re: [Bug-xorriso] bug with handling symbolic links?, Thomas Schmitt, 2015/03/01
- Re: [Bug-xorriso] bug with handling symbolic links?, Thomas Schmitt, 2015/03/05
- Re: [Bug-xorriso] bug with handling symbolic links?, Joerg Meyer, 2015/03/07
- Re: [Bug-xorriso] bug with handling symbolic links?, Thomas Schmitt, 2015/03/07
- Re: [Bug-xorriso] bug with handling symbolic links?, Joerg Meyer, 2015/03/07
- Re: [Bug-xorriso] bug with handling symbolic links?, Thomas Schmitt, 2015/03/07
- Re: [Bug-xorriso] bug with handling symbolic links?, Joerg Meyer, 2015/03/07
- Re: [Bug-xorriso] bug with handling symbolic links?, Thomas Schmitt, 2015/03/07
- Re: [Bug-xorriso] bug with handling symbolic links?, Joerg Meyer, 2015/03/08
- Re: [Bug-xorriso] bug with handling symbolic links?, Thomas Schmitt, 2015/03/08
- Re: [Bug-xorriso] bug with handling symbolic links?,
Joerg Meyer <=
- Re: [Bug-xorriso] bug with handling symbolic links?, Thomas Schmitt, 2015/03/08
- Re: [Bug-xorriso] bug with handling symbolic links?, Thomas Schmitt, 2015/03/07
- Re: [Bug-xorriso] shared file content with -indev -> -outdev (form from "Re: bug with handling symbolic links"), Joerg Meyer, 2015/03/08
- Re: [Bug-xorriso] bug with handling symbolic links?, Thomas Schmitt, 2015/03/08
Re: [Bug-xorriso] bug with handling symbolic links?, Thomas Schmitt, 2015/03/09
Re: [Bug-xorriso] bug with handling symbolic links?, Thomas Schmitt, 2015/03/09