Bug 112035
| Summary: | bad sectors number recording iso images | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | Frediano Ziglio <freddyz77> |
| Component: | cdrecord | Assignee: | Harald Hoyer <harald> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | David Lawrence <dkl> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 9 | ||
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i686 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2004-07-28 12:22:18 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
you should burn with padding: # cdrecord -v -dao dev=0,5,0 -pad yarrow-i386-disc1.iso Using -dao option problem do not occurs so adding -pad is not necessary in your command. Using 1.x cdrecord I remember that I can burn with a # cdrecord -v image.iso and check it with # md5sum /dev/cdrom If now I use # cdrecord -v -pad image.iso (I didn't try...) 15 sectors are written after iso image however md5sum will read 2 more sectors (cause toc contains two more sectors) so md5sum will give wrong results... you are right... -dao does it right for the md5sum... -pad is required for non-dao, to get no io-error |
From Bugzilla Helper: User-Agent: Mozilla/5.0 Galeon/1.2.7 (X11; Linux i686; U;) Gecko/20030131 Description of problem: I was trying to record Fedora Core 1 CDs. # cdrecord -v dev=0,5,0 yarrow-i386-disc1.iso (dev 0,5,0 is my cd writer while 0,3,0 it's my cd reader) burn finish correctly however # md5sum /dev/cdrom Input/Output error # readcd dev=0,3,0 f=test.iso Capacity: 322434 Blocks = 644868 kBytes = 629 MBytes = 660 prMB Sectorsize: 2048 Bytes Copy from SCSI (0,3,0) disk to file 'test.iso' end: 322434 readcd: Input/output error. read_g1: scsi sendcmd: no error CDB: 28 00 00 04 EB 80 00 00 02 00 status: 0x2 (CHECK CONDITION) Sense Bytes: F0 00 03 00 04 EB 81 0A 00 00 00 00 11 05 00 00 Sense Key: 0x3 Medium Error, Segment 0 Sense Code: 0x11 Qual 0x05 (l-ec uncorrectable error) Fru 0x0 Sense flags: Blk 322433 (valid) resid: 2048 cmd finished after 0.305s timeout 40s readcd: Input/output error. Cannot read source disk readcd: Retrying from sector 322432. ..~~-~~~+~~~-~~~+~~~-~~~+~~~-~~~+~~~-~~~+~~~-~~~+~~~-~~~+~~~ It stops at sector #322432. # ll yarrow-i386-disc1.iso -rw-rw-r-- 2 *** *** 660340736 12 dic 16:39 yarrow-i386-disc1.iso now 322432 * 2048 = 660340736, file iso size but readcd wants to read 322434 sectors!!! Now is readcd or cdrecord wrong ? # cdrecord dev=0,5,0 -toc ... Supported modes: TAO PACKET SAO RAW/R96R first: 1 last 1 track: 1 lba: 0 ( 0) 00:02:00 adr: 1 control: 4 mode: 1 track:lout lba: 322434 ( 1289736) 71:41:09 adr: 1 control: 4 mode: -1 ?? it contains 322434 sectors... why ?? # cdrecord -v dev=0,5,0 yarrow-i386-disc1.iso ... Supported modes: TAO PACKET SAO RAW/R96R Drive buf size : 1176000 = 1148 KB FIFO size : 4194304 = 4096 KB Track 01: data 629 MB Total size: 723 MB (71:39.12) = 322434 sectors Lout start: 723 MB (71:41/09) = 322434 sectors Current Secsize: 2048 ... (stopped) ... why 322434 sectors ?? # cdrecord -v -dao dev=0,5,0 yarrow-i386-disc1.iso ... Supported modes: TAO PACKET SAO RAW/R96R Drive buf size : 1176000 = 1148 KB FIFO size : 4194304 = 4096 KB Track 01: data 629 MB Total size: 723 MB (71:39.09) = 322432 sectors Lout start: 723 MB (71:41/07) = 322432 sectors Current Secsize: 2048 ... (stopped) ... sectors count is now correct. # cdrecord -v -dao dev=0,5,0 yarrow-i386-disc3.iso (I already burned disk #1) # md5sum /dev/cdrom1 6a26b34069639d0c31465d4079a8e1b2 /dev/cdrom1 (correct and no error!!!) # readcd dev=0,3,0 f=test.iso Capacity: 315168 Blocks = 630336 kBytes = 615 MBytes = 645 prMB Sectorsize: 2048 Bytes Copy from SCSI (0,3,0) disk to file 'test.iso' end: 315168 addr: 315168 cnt: 328 Time total: 177.564sec Read 630336.00 kB at 3549.9 kB/sec. # md5sum test.iso 6a26b34069639d0c31465d4079a8e1b2 test.iso (correct) Version-Release number of selected component (if applicable): cdrecord-2.01-0.a19.2 and cdrecord-2.0-11.9.1 How reproducible: Always Steps to Reproduce: 1. cdrecord -v image.iso 2. cdrecord -toc 3. check values and iso size... (you can see sector size is wrong starting cdrecord, without burning, sectors count is wrong, with -dao option turned on sectors count is correct) Actual Results: sector count is not correct and readcd fails.. Expected Results: sector count should be correct so readcd doesn't fail Additional info: I tried to update cdrecord with Fedora Core 1 version with same results...