Re: Formatting a tape?
This looks like a hardware problem to me. However, I don't have any experience with this type of SCSI hardware. If it were my system I'd be double-checking the tape drive setup, cabling and termination, and then substituting other cables and SCSI controllers. One thing that confuses me is that the DLT drive is shown as a SCSI-2 device but is nonetheless running with 160MB/sec transfers. On my system (7.1-STABLE, SM P6DC6, onboard Adaptec 7899 UW160 controller, external Overland AIT# library I get the following: ahc0: Adaptec aic7899 Ultra160 SCSI adapter port 0x9400-0x94ff mem 0xf3021000- 0xf3021fff irq 18 at device 4.0 on pci3 ahc0: [ITHREAD] ahc1: Adaptec aic7899 Ultra160 SCSI adapter port 0x9800-0x98ff mem 0xf3022000- 0xf3022fff irq 18 at device 4.1 on pci3 ahc1: [ITHREAD] sa0 at ahc1 bus 0 target 4 lun 0 sa0 at ahc1 bus 0 target 4 lun 0 sa0: SONY SDX-700C 0102 Removable Sequential Access SCSI-2 device sa0: 40.000MB/s transfers (20.000MHz, offset 127, 16bit) On Thu, 19 Mar 2009, Jaime wrote: On Thu, Mar 19, 2009 at 2:18 PM, Michael L. Squires mi...@siralan.org wrote: Have you looked at /var/log/messages? I've found error messages written there when trying to write to a tape which showed that I needed to change the block size. Good idea, but sadly there is nothing useful there. The following happened during my tinkering with mt, tar, and dd: Mar 19 14:06:32 atlas kernel: sa0 at ahc0 bus 0 target 6 lun 0 Mar 19 14:06:32 atlas kernel: sa0: QUANTUM DLT-V4 0A00 Removable Sequential Access SCSI-2 device Mar 19 14:06:32 atlas kernel: sa0: 160.000MB/s transfers (80.000MHz, offset 96, 16bit) Mar 19 14:23:46 atlas kernel: (sa0:ahc0:0:6:0): Unexpected busfree in Data-out phase Mar 19 14:23:46 atlas kernel: SEQADDR == 0x86 Mar 19 14:23:46 atlas kernel: (sa0:ahc0:0:6:0): lost device Mar 19 14:23:46 atlas kernel: (sa0:ahc0:0:6:0): failed to write terminating filemark(s) Mar 19 14:23:47 atlas kernel: (sa0:ahc0:0:6:0): tape is now frozen- use an OFFLINE, REWIND or MTEOM command to clear this state. Mar 19 14:23:47 atlas kernel: (sa0:ahc0:0:6:0): removing device entry Mar 19 14:27:37 atlas kernel: sa0 at ahc0 bus 0 target 6 lun 0 Mar 19 14:27:37 atlas kernel: sa0: QUANTUM DLT-V4 0A00 Removable Sequential Access SCSI-2 device Mar 19 14:27:37 atlas kernel: sa0: 160.000MB/s transfers (80.000MHz, offset 96, 16bit) Mar 19 14:29:19 atlas kernel: (sa0:ahc0:0:6:0): lost device Mar 19 14:29:19 atlas kernel: (sa0:ahc0:0:6:0): removing device entry Jaime ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Formatting a tape?
I have a DLT tape drive in a FreeBSD system. With one of the tapes, I can get tar -cvpf /dev/sa0 -C / . to work. With all the other tapes, I can't. Is there some kind of formatting process that I need to do? I tried mt fsf 1 from this page: http://www.freebsd.org/doc/en/books/handbook/backups-tapebackups.html This didn't seem to work, though. Any help is appreciated, Jaime -- To affect the quality of the day, that is the highest of arts. -- Henry David Thoreau Tone of voice in email is misunderstood 50% of the time. Source: http://www.howtoweb.com/cgi-bin/insider.pl?zone=214061 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Formatting a tape?
On Thu, 19 Mar 2009, Jaime wrote: I have a DLT tape drive in a FreeBSD system. With one of the tapes, I can get tar -cvpf /dev/sa0 -C / . to work. With all the other tapes, I can't. Is there some kind of formatting process that I need to do? I tried mt fsf 1 from this page: I assume that this is a fresh tape? Do other tapes from the same batch work? What happens if you use dd to try and write to the tape? The command dd if=/dev/zero of=/dev/sa0 count=8 should print out: 8+0 records in 8+0 records out If you are getting something else, I might suspect a physical media problem. I have certainly gotten the odd dud tape before. A. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Formatting a tape?
I assume that this is a fresh tape? Do other tapes from the same batch work? Thanks for the reply. Yes, 10 new tapes. All Sony brand DLTape VS1 on the box. (Only one t. Damn marketers.) They all have this symptom. What happens if you use dd to try and write to the tape? I'll give it a try. I've only used tar and mt so far. Thanks, Jaime -- To affect the quality of the day, that is the highest of arts. -- Henry David Thoreau Tone of voice in email is misunderstood 50% of the time. Source: http://www.howtoweb.com/cgi-bin/insider.pl?zone=214061 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Formatting a tape?
On Mar 19, 2009, at 9:15 AM, Jaime wrote: I have a DLT tape drive in a FreeBSD system. With one of the tapes, I can get tar -cvpf /dev/sa0 -C / . to work. With all the other tapes, I can't. Is there some kind of formatting process that I need to do? I tried mt fsf 1 from this page: What's the SCSI controller that you're using, and which version of the OS are you running? What's mt status say? Can you try mt blocksize 0, mt rewind, mt weof 2, mt rewind and then retry tar? Try changing your blocksize via tar's -b flag to 32, 64, 126, or 128 blocks. FreeBSD doesn't expose enabling/disabling hardware compression or tuning compression levels via the device name used (ala Solaris' /dev/rmt/0ubn for example), so you'll need to look to mt blocksize and mt comp to adjust, otherwise you'll get whatever default behavior the device is set to. In most cases, the device will want a fairly large blocksize in order to keep streaming the tape. (I've used both Quantum DLT and sDLT drives with FreeBSD 5.x 6.x on various Adaptec LSI MegaRAID SCSI controllers-- mostly Dell, some HP boxen) Regards, -- -Chuck ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Formatting a tape?
On Thu, Mar 19, 2009 at 1:39 PM, Andrew Hamilton-Wright and...@qemg.org wrote: What happens if you use dd to try and write to the tape? The command dd if=/dev/zero of=/dev/sa0 count=8 should print out: 8+0 records in 8+0 records out I tried this and the output was: 8+0 records in 8+0 records out 4096 bytes transferred in 0.036611 secs (111879 bytes/sec) So then I tried my backup script (which is basically a tar command) and got this on the console: (sa0:ahc0:0:6:0): Unexpected busfree in Data-out phase SEQADDR == 0x86 (sa0:ahc0:0:6:0): lost device (sa0:ahc0:0:6:0): failed to write terminating filemark(s) (sa0:ahc0:0:6:0): tape is now frozen- use an OFFLINE, REWIND, or MTEOM command to clear this state. (sa0:ahc0:0:6:0): removing device entry On the ssh terminal / standard output, I got this: tar: Write error: Input/output error Now camcontrol devlist doesn't show the tape drive, even though it did before. So I use camcontrol rescan all and it comes back. On console, it says: sa0 at ahc0 bus 0 target 6 lun 0 sa0: QUANTUM DLT-V4 0A00 Removable Sequential Access SCSI-2 device sa0: 160.000MB/s transfers (80.000MHz, offset 96, 16 bit) So then I try: mt -f /dev/sa0 rewind mt: /dev/sa0: Device not configured atlas:jkikpolecamcontrol devlist SEAGATE ST373207LW 0004 at scbus0 target 0 lun 0 (pass0) SEAGATE ST373207LW 0004 at scbus0 target 1 lun 0 (pass1) SEAGATE ST373207LW 0004 at scbus0 target 2 lun 0 (pass2) LaCie BigDisk Extreme+ 3.AA at scbus1 target 0 lun 0 (da0,pass3) WTF? Its gone again. On console, I get: (sa0:ahc0:0:6:0): lost device (sa0:ahc0:0:6:0): removing device entry I'm going to tinker some more and see if I can get this drive working again. I'll also try another tape. (Its worth noting that I DID manage to get a tape working thanks to mt -f /dev/sa0 fsf 1 mt -f /dev/sa0 rewind.) More info later. Thanks for the help Jaime ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Formatting a tape?
On Thu, Mar 19, 2009 at 12:15:48PM -0400, Jaime wrote: I have a DLT tape drive in a FreeBSD system. With one of the tapes, I can get tar -cvpf /dev/sa0 -C / . to work. With all the other tapes, I can't. Is there some kind of formatting process that I need to do? I tried mt fsf 1 from this page: http://www.freebsd.org/doc/en/books/handbook/backups-tapebackups.html This didn't seem to work, though. Tapes do not need to be formatted, though the issue mentioned in the page you indicate can cause problems.I have seen it a lot on DAT (DDS) tapes and never with a DLT. On the DAT tapes, the solutions given on that page have usually not helped for me. But, since I have never had any problem with DLT tapes, I can't say if they might be helpful. You can try writing a block or two to the drive using dd(1). That occasionally helped with the DAT (DDS) tapes. dd count=10 if=/dev/zero of=/dev/nsa0 Seems like it should have a bs=nn in there too, but I can't remember if the default of 512 is OK or not. jerry Any help is appreciated, Jaime -- To affect the quality of the day, that is the highest of arts. -- Henry David Thoreau Tone of voice in email is misunderstood 50% of the time. Source: http://www.howtoweb.com/cgi-bin/insider.pl?zone=214061 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Formatting a tape?
On Thu, Mar 19, 2009 at 2:18 PM, Michael L. Squires mi...@siralan.org wrote: Have you looked at /var/log/messages? I've found error messages written there when trying to write to a tape which showed that I needed to change the block size. Good idea, but sadly there is nothing useful there. The following happened during my tinkering with mt, tar, and dd: Mar 19 14:06:32 atlas kernel: sa0 at ahc0 bus 0 target 6 lun 0 Mar 19 14:06:32 atlas kernel: sa0: QUANTUM DLT-V4 0A00 Removable Sequential Access SCSI-2 device Mar 19 14:06:32 atlas kernel: sa0: 160.000MB/s transfers (80.000MHz, offset 96, 16bit) Mar 19 14:23:46 atlas kernel: (sa0:ahc0:0:6:0): Unexpected busfree in Data-out phase Mar 19 14:23:46 atlas kernel: SEQADDR == 0x86 Mar 19 14:23:46 atlas kernel: (sa0:ahc0:0:6:0): lost device Mar 19 14:23:46 atlas kernel: (sa0:ahc0:0:6:0): failed to write terminating filemark(s) Mar 19 14:23:47 atlas kernel: (sa0:ahc0:0:6:0): tape is now frozen- use an OFFLINE, REWIND or MTEOM command to clear this state. Mar 19 14:23:47 atlas kernel: (sa0:ahc0:0:6:0): removing device entry Mar 19 14:27:37 atlas kernel: sa0 at ahc0 bus 0 target 6 lun 0 Mar 19 14:27:37 atlas kernel: sa0: QUANTUM DLT-V4 0A00 Removable Sequential Access SCSI-2 device Mar 19 14:27:37 atlas kernel: sa0: 160.000MB/s transfers (80.000MHz, offset 96, 16bit) Mar 19 14:29:19 atlas kernel: (sa0:ahc0:0:6:0): lost device Mar 19 14:29:19 atlas kernel: (sa0:ahc0:0:6:0): removing device entry Jaime ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Formatting a tape?
mt rewind should suffice. AFAIK DLT tapes doesn't need to be formatted On Thu, 19 Mar 2009, Jaime wrote: I have a DLT tape drive in a FreeBSD system. With one of the tapes, I can get tar -cvpf /dev/sa0 -C / . to work. With all the other tapes, I can't. Is there some kind of formatting process that I need to do? I tried mt fsf 1 from this page: http://www.freebsd.org/doc/en/books/handbook/backups-tapebackups.html This didn't seem to work, though. Any help is appreciated, Jaime -- To affect the quality of the day, that is the highest of arts. -- Henry David Thoreau Tone of voice in email is misunderstood 50% of the time. Source: http://www.howtoweb.com/cgi-bin/insider.pl?zone=214061 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Formatting a tape?
Try this : mt -f /dev/nsa0 rewind mt -f /dev/nsa0 weof 1 mt -f /dev/nsa0 rewind On Thu, 2009-03-19 at 12:15 -0400, Jaime wrote: I have a DLT tape drive in a FreeBSD system. With one of the tapes, I can get tar -cvpf /dev/sa0 -C / . to work. With all the other tapes, I can't. Is there some kind of formatting process that I need to do? I tried mt fsf 1 from this page: http://www.freebsd.org/doc/en/books/handbook/backups-tapebackups.html This didn't seem to work, though. Any help is appreciated, Jaime -- Julien Cigar Belgian Biodiversity Platform http://www.biodiversity.be Université Libre de Bruxelles (ULB) Campus de la Plaine CP 257 Bâtiment NO, Bureau 4 N4 115C (Niveau 4) Boulevard du Triomphe, entrée ULB 2 B-1050 Bruxelles Mail: jci...@ulb.ac.be @biobel: http://biobel.biodiversity.be/person/show/471 Tel : 02 650 57 52 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Formatting a tape?
On Thu, 19 Mar 2009, Jaime wrote: On Thu, Mar 19, 2009 at 1:39 PM, Andrew Hamilton-Wright and...@qemg.org wrote: What happens if you use dd to try and write to the tape? The command dd if=/dev/zero of=/dev/sa0 count=8 should print out: 8+0 records in 8+0 records out I tried this and the output was: 8+0 records in 8+0 records out 4096 bytes transferred in 0.036611 secs (111879 bytes/sec) Small write works okay... So then I tried my backup script (which is basically a tar command) and got this on the console: (sa0:ahc0:0:6:0): Unexpected busfree in Data-out phase SEQADDR == 0x86 (sa0:ahc0:0:6:0): lost device (sa0:ahc0:0:6:0): failed to write terminating filemark(s) (sa0:ahc0:0:6:0): tape is now frozen- use an OFFLINE, REWIND, or MTEOM command to clear this state. (sa0:ahc0:0:6:0): removing device entry Bigger write fails... On the ssh terminal / standard output, I got this: tar: Write error: Input/output error Now camcontrol devlist doesn't show the tape drive, even though it did before. And the device acts flaky. That screams SCSI termination problem to me. That would also be consistent with most/all of the tapes failing, because it's not the tapes. ... I'm going to tinker some more and see if I can get this drive working again. I'll also try another tape. (Its worth noting that I DID manage to get a tape working thanks to mt -f /dev/sa0 fsf 1 mt -f /dev/sa0 rewind.) More info later. Try that one working tape again. Betcha it fails. -Warren Block * Rapid City, South Dakota USA ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Formatting a tape?
On Thu, Mar 19, 2009 at 7:37 PM, Warren Block wbl...@wonkity.com wrote: And the device acts flaky. That screams SCSI termination problem to me. That would also be consistent with most/all of the tapes failing, because it's not the tapes. I've checked the termination more times than I can remember. (No exaggeration. Problem had been on-going for months.) Its OK. I have one bent pin on one of the two ports on the SCSI cable, but it (1) isn't the one being used and (2) doesn't touch any other pins. Its just an unusable port on the cable, not a source of ... cross contamination, I guess you could say. So I am pretty sure that we're OK on the SCSI chain. I *am* starting to wonder about the tape drive itself, though. What do you think? Thanks again, Jaime ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Formatting a tape?
On Thu, 19 Mar 2009, Jaime wrote: On Thu, Mar 19, 2009 at 7:37 PM, Warren Block wbl...@wonkity.com wrote: And the device acts flaky. That screams SCSI termination problem to me. That would also be consistent with most/all of the tapes failing, because it's not the tapes. I've checked the termination more times than I can remember. (No exaggeration. Problem had been on-going for months.) Its OK. I have one bent pin on one of the two ports on the SCSI cable, but it (1) isn't the one being used and (2) doesn't touch any other pins. Its just an unusable port on the cable, not a source of ... cross contamination, I guess you could say. Two terminators, one at each end of the bus? Another possibility is that the terminators are fine, but nothing is providing termpower (blown fuse or jumper). And there are different SCSI bus widths. The more devices you have, the more interesting it gets. So I am pretty sure that we're OK on the SCSI chain. I *am* starting to wonder about the tape drive itself, though. Could be the drive, or could be cables. If you have other devices on the bus and they work fine on large, fast transfers, then suspect the tape drive. If you can get that one tape to work repeatedly but none of the other tapes will, maybe a bad batch of tapes. -Warren Block * Rapid City, South Dakota USA___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
