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Re: BD-RE mount problem



[Ccing cdwrite@other.debian.org]

Any ideas?

On Tue, Aug 07, 2012 at 03:49:13PM -0400, Gary Dale wrote:
> On 06/08/12 11:51 PM, Gary Dale wrote:
> >I've been using BD-RE discs for backups on a Debian/Squeeze server
> >for a couple of years now. In the last week or so the backups have
> >been failing. I haven't modified my backup script so I thought
> >about possible hardware issues.
> >
> >- I tried changing the BluRay writer but got the same problem.
> >- I tried new discs but got the same problem.
> >- I tried replacing the PCI-SATA controller that the machine
> >needed for the BluRay writer, but still got the same problem.
> >- the discs do formate correctly when I try dvd+rw-format
> >-force=full /dev/sr0
> >
> >Finally, I tried an entirely different machine with a different
> >model of BluRay writer and I'm still getting the same problem.
> >
> >This new machine has a different architecture (AMD64) and is
> >running Debian/Wheezy. Why am I getting the same problem?
> >
> >I tried a new disc again, and this time formatted it through K3B
> >instead of using dvd+rw-format directly. It appeared to format
> >correctly - and no longer shows as an empty BD-RE disc when I
> >insert it - but still wouldn't mount.
> >
> >All the mount attempts give exactly the same result:
> >
> >  # mount /media/dvd
> >  mount: block device /dev/sr0 is write-protected, mounting read-only
> >  mount: wrong fs type, bad option, bad superblock on /dev/sr0,
> >         missing codepage or helper program, or other error
> >         In some cases useful info is found in syslog - try
> >         dmesg | tail  or so
> >
> >The /etc/fstab entry is the same between the two machines:
> >  /dev/sr0        /media/dvd      udf     user       0       0
> >
> >I'm using Memorex BD-RE 2x discs. I've used an LG, ASUS and
> >Pioneer BluRay writer - the first two on the older machine. The
> >ASUS and Pioneer are brand new writers.
> >
> >Any ideas?
> 
> Further to above, I did a file copy using K3B onto one of the BD-RE
> discs that won't mount. K3B appeared to recognize that there was a
> udf file system on the disc.
> 
> After it finished, it automounted as /media/cdrom0 with fs type
> iso9660. However, I could also mount it as /media/dvd. Switching to
> root, I was also able to mount it using
>   mount -t udf /dev/sr0 /media/dvd
> Running mount shows that it is mounted as a udf file system.
> 
> However, I can't mount it -rw. It insists that the file system is read-only.
> 
> Also, I booted my computer from a USB key containing system rescue
> CD. Again, the mount fails.
> 
> Here's a sequence I just tried:
> 
> root@transponder:/home/garydale# mkudffs /dev/sr0
> Error opening device: Read-only file system
> root@transponder:/home/garydale# mount /media/dvd
> mount: block device /dev/sr0 is write-protected, mounting read-only
> mount: wrong fs type, bad option, bad superblock on /dev/sr0,
>        missing codepage or helper program, or other error
>        In some cases useful info is found in syslog - try
>        dmesg | tail  or so
> 
> root@transponder:/home/garydale# mount /media/cdrom0
> mount: block device /dev/sr0 is write-protected, mounting read-only
> mount: wrong fs type, bad option, bad superblock on /dev/sr0,
>        missing codepage or helper program, or other error
>        In some cases useful info is found in syslog - try
>        dmesg | tail  or so
> 
> 
> Afterward, I started up k3B and tried tools | format. The format
> dialog has a pulldown for the media which shows "Complete Data
> BD-RE". It wouldn't do a format - said it didn't need to do one -
> unless I do a force, which I decided against.
> 
> I was able to burn a data project, after which the BluRay disc
> automounts as /media/cdrom0 again. The mount command (no options)
> shows it as:
>   /dev/sr0 on /media/cdrom0 type iso9660 (ro,nosuid,nodev,noexec,relatime)
> 
> I can also mount it as /media/dvd, where the mount command shows it
> mounted as:
>   /dev/sr0 on /media/dvd type udf (ro,nosuid,nodev,noexec,relatime,utf8)
> 
> Trying to format the disk using dvd+rw-format is now giving me:
>   root@transponder:/home/garydale# dvd+rw-format -force=full /dev/sr0
>   * BD/DVD±RW/-RAM format utility by <appro@fy.chalmers.se>, version 7.1.
>   * 24.2GB BD media detected.
>   * formatting .:-[ FORMAT UNIT failed with SK=5h/INVALID FIELD IN
> PARAMETER LIST]: Input/output error
> 
> I get the same if I try to -blank or -format as well.
> 
> And of course, the device shows as 100% full under df, since it
> seems to really be an iso9660 formatted disc.
> 
> Here's the dvd+rw-mediainfo:
> 
> root@transponder:/home/garydale# dvd+rw-mediainfo /dev/sr0
> INQUIRY:                [PIONEER ][BD-RW   BDR-207D][1.10]
> GET [CURRENT] CONFIGURATION:
>  Mounted Media:         43h, BD-RE
>  Media ID:               RITEK/BW1
>  Current Write Speed:   2.0x4495=8990KB/s
>  Write Speed #0:        2.0x4495=8990KB/s
>  Speed Descriptor#0:    00/11826175 R@2.0x4495=8990KB/s W@2.0x4495=8990KB/s
> READ DISC INFORMATION:
>  Disc status:           complete
>  Number of Sessions:    1
>  State of Last Session: complete
>  Number of Tracks:      1
> READ FORMAT CAPACITIES:
>  formatted:             11826176*2048=24220008448
>  00h(3000):             11826176*2048=24220008448
>  30h(3000):             11826176*2048=24220008448
>  30h(5000):             11564032*2048=23683137536
>  30h(1000):             12088320*2048=24756879360
>  31h(800):              12219392*2048=25025314816
> READ TRACK INFORMATION[#1]:
>  Track State:           complete
>  Track Start Address:   0*2KB
>  Free Blocks:           0*2KB
>  Track Size:            11826176*2KB
> FABRICATED TOC:
>  Track#1  :             14@0
>  Track#AA :             14@11826176
>  Multi-session Info:    #1@0
> READ CAPACITY:          11826176*2048=24220008448
> 
> I've been formatting DVD-RAM discs as UDF for years before switching
> to BD-RE. I've always been able to mount them, erase files from them
> and copy files to them without problems. Now it suddenly seems like
> none of my BluRay equipped machines will let me do it.
> 
> Any ideas anyone?
> 
> 
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