Your dd issue may be related to block size. Tar defaults to 10k blocks, dd defaults to 512 bytes blocks.
Try this dd command: dd if=/dev/tape of=dump bs=10k No idea about the verify. Guy -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Christian Iversen Sent: Friday, February 25, 2005 6:16 PM To: linux-scsi Subject: Problem with tape drive: illegal seek Whenever I use --verify for tar, I get problems. Specifically, I get "Illegal seek" when tar gets to the verify phase. I'm trying this on a Compaq SDT-10000 on an Adaptec AHA-3940U2x/395U2x, according to lspci. The following simulates my backup script.. to some extend :) [EMAIL PROTECTED]/tmp #dd if=/dev/urandom of=random-data bs=1024 count=1024 1024+0 records in 1024+0 records out 1048576 bytes transferred in 0,324788 seconds (3228493 bytes/sec) [EMAIL PROTECTED]/tmp #mt rewind [EMAIL PROTECTED]/tmp #tar --create --verify --file /dev/tape random-data tar: /dev/tape: Warning: Cannot seek: Illegal seek [EMAIL PROTECTED]/tmp #dmesg | tail program smartd is using a deprecated SCSI ioctl, please convert it to SG_IO program smartd is using a deprecated SCSI ioctl, please convert it to SG_IO program smartd is using a deprecated SCSI ioctl, please convert it to SG_IO program smartd is using a deprecated SCSI ioctl, please convert it to SG_IO program smartd is using a deprecated SCSI ioctl, please convert it to SG_IO program smartd is using a deprecated SCSI ioctl, please convert it to SG_IO program smartd is using a deprecated SCSI ioctl, please convert it to SG_IO program smartd is using a deprecated SCSI ioctl, please convert it to SG_IO program smartd is using a deprecated SCSI ioctl, please convert it to SG_IO ReiserFS: md0: warning: vs-8115: get_num_ver: not directory item [EMAIL PROTECTED]/tmp # Should I look into the buggy'dness of this, or am I doing something wrong? Please note that I can restore the data just fine, if I use tar. If I try to use dd, I get strange errors as well: [EMAIL PROTECTED]/tmp #dd if=/dev/tape of=dump dd: reading `/dev/tape': Cannot allocate memory 0+0 records in 0+0 records out 0 bytes transferred in 3,699040 seconds (0 bytes/sec) I hope you can help me. -- Regards, Christian Iversen - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
