Mitch Davis wrote:
Hello,
I'm trying to use growisofs to write data to a blanked DVD-RW. If I point growisofs at an image file, everything works properly. But if I pipe in the image file via stdin or a named pipe, the write fails with the message "COMMAND SEQUENCE ERROR".
(Ultimately I want the data to be streamed from a backup program, not from a file)
I'm running RedHat FC3 on a P4, with FC3's version of
dvd+rw-tools 5.21.4.10.8. The kernel is stock FC3
2.6.9-1.667, with no relevant kernel cmd-line args.
There are no automount daemons running (I killed hald
and dbus-daemon-1 and removed the "managed" line from
/etc/fstab) and as far as I can tell, nothing else is
accessing the drive. ps aux looks clean to me, and
lsof shows nothing that has /dev/hdc open.
Since you are running FC3, you could run the cdrecord which comes with the release. I haven't had any problems with it. YMMV.
I have straced it in both cases and I don't see any relevant difference between the two runs. (strace doesn't show what the ioctl return buffer data is).
Please see below for more information; I hope it's sufficient.
Any ideas why I'm not able to pipe data into growisofs?
Many thanks,
Mitch.
# Prepare the source file.
[EMAIL PROTECTED] /mnt/hdb2]# dd if=/dev/zero of=/tmp/zero-10M bs=10M count=1 1+0 records in 1+0 records out [EMAIL PROTECTED] /mnt/hdb2]# ls -l /tmp/zero-10M -rw-r--r-- 1 root root 10485760 Feb 18 11:48 /tmp/zero-10M
# Blank the media
[EMAIL PROTECTED] /mnt/hdb2]# dvd+rw-format -blank /dev/hdc * DVDÂRW/-RAM format utility by <[EMAIL PROTECTED]>, version 4.10. * 4.7GB DVD-RW media in Sequential mode detected. * blanking |
# Write file directly
[EMAIL PROTECTED] /mnt/hdb2]# growisofs -Z /dev/hdc=/tmp/zero-10M Executing 'builtin_dd if=/tmp/zero-10M of=/dev/hdc obs=32k seek=0' /dev/hdc: FEATURE 21h is not on, engaging DAO... /dev/hdc: reserving 5120 block, warning for short DAO recording /dev/hdc: "Current Write Speed" is 2.0x1385KBps. 1605632/10485760 (15.3%) @0.0x, remaining 0:27 1605632/10485760 (15.3%) @0.0x, remaining 0:49 1605632/10485760 (15.3%) @0.0x, remaining 1:06 1605632/10485760 (15.3%) @0.0x, remaining 1:28 1605632/10485760 (15.3%) @0.0x, remaining 1:45 1605632/10485760 (15.3%) @0.0x, remaining 2:01 1605632/10485760 (15.3%) @0.0x, remaining 2:23 1605632/10485760 (15.3%) @0.0x, remaining 2:40 1605632/10485760 (15.3%) @0.0x, remaining 2:56 1605632/10485760 (15.3%) @0.0x, remaining 3:19 1605632/10485760 (15.3%) @0.0x, remaining 3:35 builtin_dd: 5120*2KB out @ average 0.2x1385KBps /dev/hdc: flushing cache
# Blank the media
[EMAIL PROTECTED] /mnt/hdb2]# dvd+rw-format -blank /dev/hdc * DVDÂRW/-RAM format utility by <[EMAIL PROTECTED]>, version 4.10. * 4.7GB DVD-RW media in Sequential mode detected. * blanking |
# Write file via stdin
[EMAIL PROTECTED] /mnt/hdb2]# cat /tmp/zero-10M | growisofs -Z /dev/hdc=/dev/fd/0 Executing 'builtin_dd if=/dev/fd/0 of=/dev/hdc obs=32k seek=0' /dev/hdc: FEATURE 21h is not on, engaging DAO... /dev/hdc: "Current Write Speed" is 2.0x1385KBps. :-! "COMMAND SEQUENCE ERROR"@LBA=0h. Is media being read? :-! the LUN appears to be stuck at 0h, retrying in 5 secs... 0/4706074624 ( 0.0%) @0x, remaining ??:?? :-! "COMMAND SEQUENCE ERROR"@LBA=0h. Is media being read? :-! the LUN appears to be stuck at 0h, retrying in 5 secs... ^C
# Blanking again
[EMAIL PROTECTED] /mnt/hdb2]# dvd+rw-format -blank /dev/hdc * DVDÂRW/-RAM format utility by <[EMAIL PROTECTED]>, version 4.10. * 4.7GB DVD-RW media in Sequential mode detected. * blanking -
# Media info
[EMAIL PROTECTED] /mnt/hdb2]# dvd+rw-mediainfo /dev/hdc INQUIRY: [TEAC ][DV-W50E ][1.30] GET [CURRENT] CONFIGURATION: Mounted Media: 14h, DVD-RW Sequential Media ID: PRINCO Current Write Speed: 2.0x1385=2770KB/s Write Speed #0: 2.0x1385=2770KB/s Write Speed #1: 1.0x1385=1385KB/s Speed Descriptor#0: 00/2298495 [EMAIL PROTECTED]/s [EMAIL PROTECTED]/s Speed Descriptor#1: 00/2298495 [EMAIL PROTECTED]/s [EMAIL PROTECTED]/s READ DVD STRUCTURE[#0h]: Media Book Type: 32h, DVD-RW book [revision 2] Legacy lead-out at: 5120*2KB=10485760 READ DISC INFORMATION: Disc status: blank Number of Sessions: 1 State of Last Session: empty Number of Tracks: 1 READ TRACK INFORMATION[#1]: Track State: invisible incremental Track Start Address: 0*2KB Next Writable Address: 0*2KB Free Blocks: 2297888*2KB Track Size: 2297888*2KB READ CAPACITY: 1*2048=2048 [EMAIL PROTECTED] /mnt/hdb2]#
-- bill davidsen <[EMAIL PROTECTED]> CTO TMR Associates, Inc Doing interesting things with small computers since 1979
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