Bug 30910

Summary:	k3b fails to burn large ISOs
Product:	Mageia	Reporter:	Frank Griffin <ftg>
Component:	RPM Packages	Assignee:	Mageia Bug Squad <bugsquad>
Status:	RESOLVED INVALID	QA Contact:
Severity:	normal
Priority:	Normal	CC:	davidwhodgins, fri
Version:	Cauldron
Target Milestone:	---
Hardware:	All
OS:	Linux
See Also:	https://bugs.mageia.org/show_bug.cgi?id=30908 https://bugs.mageia.org/show_bug.cgi?id=30909
Whiteboard:
Source RPM:	k3b	CVE:
Status comment:

Description Frank Griffin 2022-09-29 04:01:58 CEST

I have a large ISO which I copied successfully from a commercial disk.  The ISO is:

[ftg@ftgme2 /data/DVDFab/ISO/Clone]$ ls -l ANNA*
-rw-r--r-- 1 ftg ftg 8518033408 Sep 27 16:44 ANNA.iso

This is pretty large, but it came from a double-layer DVD and the copying software had no problem with reading it.

However, when I try to burn the image with k3b, the burning completes without error but the verification phase fails with read errors on the burned disk when comparing it to the original ISO.  This happens reliably on two separate cauldrons using three different burner drives.

Smaller ISOs burn with no problems.  There used to be options called "overburn" (or some such) but I can't find them in the k3b burn dialog any more.

If k3b can't support this, it should say so.  The resulting burned disks do indeed have I/O errors as verified by a dd to /dev/null, so k3b is screwing up here in the I/O and not just borking the ISO format, since dd would be reading blocks with no knowledge of the ISO format.

Is this us, or an upstream problem ?

Comment 1 Dave Hodgins 2022-09-29 07:28:37 CEST

It could be a bad blank dvd in the drive. Does dmesg or the journal show
any errors during the burn?

CC: (none) => davidwhodgins

Comment 2 Frank Griffin 2022-09-29 16:52:10 CEST

No, I burned 5 coasters using blanks from two different spindles on two different cauldron systems using three different drives.

But I'll check journalctl - good idea.

Morgan Leijström 2022-09-29 17:31:15 CEST

See Also: (none) => https://bugs.mageia.org/show_bug.cgi?id=30908

Comment 3 Morgan Leijström 2022-10-03 09:27:02 CEST

(In reply to Frank Griffin from comment #0)
> There used to be options called "overburn" (or some such) 
> but I can't find them in the k3b burn dialog any more.

I dont have a optical drive, nor do I run cauldron, but as a reference, on mga8, K3b menu Settings > Configure K3b > Advanced > [x] Allow overburning.

If not found please ask the k3b project about it. (or if you can find by web search)

CC: (none) => fri

Morgan Leijström 2022-10-03 09:53:56 CEST

See Also: (none) => https://bugs.mageia.org/show_bug.cgi?id=30909

Comment 4 Frank Griffin 2022-10-15 02:06:59 CEST

Closing this as INVALID since the title is misleading.  I'll open another on wodim if more information comes in.

Status: NEW => RESOLVED
Resolution: (none) => INVALID