Re: Before I go off to the computer store to replace a DVD
- From: Fabian Keil <freebsd-listen@xxxxxxxxxxxxx>
- Date: Wed, 25 Apr 2007 13:22:13 +0200
Randall Stewart <rrs@xxxxxxxxx> wrote:
I have begun having difficulty with my DVD-backup that happens
every night.
It WAS working.. but now I am seeing (on creating my initial backup):
***************************************************************
bash-lakerest.net: growisofs -Z /dev/cd0 -R -J backup_init.04-24-2007.gz
Executing 'mkisofs -R -J backup_init.04-24-2007.gz | builtin_dd
of=/dev/pass0 obs=32k seek=0'
1.49% done, estimate finish Wed Apr 25 06:49:25 2007
99.60% done, estimate finish Wed Apr 25 06:50:20 2007
Total translation table size: 0
Total rockridge attributes bytes: 266
Total directory bytes: 0
Path table size(bytes): 10
Max brk space used 3440e4
336353 extents written (656 MB)
builtin_dd: 336368*2KB out @ average 5.8x1385KBps
/dev/pass0: flushing cache
:-( unable to TEST UNIT READY: Input/output error
:-[ SYNCHRONOUS FLUSH CACHE failed with SK=2h/ASC=04h/ACQ=07h]: Resource
temporarily unavailable
**********************************************************
And on the console while its progressing:
**********************************************************
acd0: FAILURE - READ_TOC ILLEGAL REQUEST asc=0x24 as=0x00
acd0: FAILURE - unknown CMD (0x03) HARDWARE ERROR asc=0x08 ascq=0x01
acd0: FAILURE - WRITE_BIG ILLEGAL REQUEST asc=0x21 ascq=0x02
**********************************************************
When I try to "append" to the DVD:
**********************************************************
:-( unable to pread64(2) primary volume descriptor: Input/output error
you most likely want to use -Z option.
backup complete Tue Apr 24 01:03:45 EDT 2007
**********************************************************
Now I would chalk this off to just a hardware failure (since it was
working).. But when I try this on another machine that happens
to have a DVD write... I get all the nice messages.. it completes
with no errors .. and I can't mount the drive :-(
The drive that errors is a SONY..
'SONY ' 'DVD RW DRU-820A ' '1.0a' Removable CD-ROM
On a 7.0 current machine.
The one that does not error but does not let me mount things is:
'GENERIC ' 'DVD RW 8XMax ' '140I' Removable CD-ROM
On a 6.2 machine.
Now it could be that both have failed.. my office is in
a barn.. but it just seems strange to me .
As anyone else seen these types of errors? should I just
replace the drives?
I saw similar looking failure messages a few days ago with
cdrecord (burning DVDs) and if I remember correctly with
readcd as well (checking the burned discs).
The created discs were OK though and I don't burn
that much, so the error messages might not be new.
The drive is a LiteOn SOHW-1693S.
Fabian
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