Re: (fwd) Bug#11922: I/O error on blank tapes
On Tue, 5 Feb 2008, Kai Makisara wrote: On Mon, 4 Feb 2008, James Bottomley wrote: On Mon, 2008-02-04 at 22:28 +0100, Borislav Petkov wrote: On Mon, Feb 04, 2008 at 03:22:06PM +0100, maximilian attems wrote: (Added Bart to CC) hello borislav, ... This does still occur with 2.6.22; with a blank tape in my HP DDS-4 drive: $ tar tzvf /dev/nst0 tar: /dev/nst0: Cannot read: Input/output error That's a SCSI tape, not an IDE one. I cc'd the SCSI list This is not a bug, it is a feature. There is _nothing_ on the tape and if you try to read something, you get an error. The same thing applies to reading after the last filemark. Note that after writing a filemark at the beginning of the tape, the situation is different. Now there is a file and the normal EOF semantics apply although there still is no data. I admit that the error return could be more descriptive but the st driver tries to be compatible with other Unices. The behavior can be changed if Linux does not match other Unices. I don't remember if I have tested just this with other Unices. I will try to test this with Tru64 tomorrow. If anyone has data on other Unices, it would be helpful. None of our Tru64 boxes have a user-accessible tape drive any more. However, I have been able to test with a Solaris box. The behavior there matches the Linux behavior: blank tape - i/o error when trying to read. -- Kai - To unsubscribe from this list: send the line unsubscribe linux-ide in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: (fwd) Bug#11922: I/O error on blank tapes
On Mon, 4 Feb 2008, James Bottomley wrote: On Mon, 2008-02-04 at 22:28 +0100, Borislav Petkov wrote: On Mon, Feb 04, 2008 at 03:22:06PM +0100, maximilian attems wrote: (Added Bart to CC) hello borislav, may i forward you that *old* Debian kernel bug, have seen you working on ide-tape: http://bugs.debian.org/11922 no we don't carry any ide patches anymore. maybe you've already fixed it in latest? thanks -- maks - Forwarded message from Stephen Kitt [EMAIL PROTECTED] - Subject: Bug#11922: I/O error on blank tapes Date: Sat, 1 Dec 2007 19:06:18 +0100 From: Stephen Kitt [EMAIL PROTECTED] To: [EMAIL PROTECTED] Hi, This does still occur with 2.6.22; with a blank tape in my HP DDS-4 drive: $ tar tzvf /dev/nst0 tar: /dev/nst0: Cannot read: Input/output error That's a SCSI tape, not an IDE one. I cc'd the SCSI list This is not a bug, it is a feature. There is _nothing_ on the tape and if you try to read something, you get an error. The same thing applies to reading after the last filemark. Note that after writing a filemark at the beginning of the tape, the situation is different. Now there is a file and the normal EOF semantics apply although there still is no data. I admit that the error return could be more descriptive but the st driver tries to be compatible with other Unices. The behavior can be changed if Linux does not match other Unices. I don't remember if I have tested just this with other Unices. I will try to test this with Tru64 tomorrow. If anyone has data on other Unices, it would be helpful. -- Kai - To unsubscribe from this list: send the line unsubscribe linux-ide in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
(fwd) Bug#11922: I/O error on blank tapes
hello borislav, may i forward you that *old* Debian kernel bug, have seen you working on ide-tape: http://bugs.debian.org/11922 no we don't carry any ide patches anymore. maybe you've already fixed it in latest? thanks -- maks - Forwarded message from Stephen Kitt [EMAIL PROTECTED] - Subject: Bug#11922: I/O error on blank tapes Date: Sat, 1 Dec 2007 19:06:18 +0100 From: Stephen Kitt [EMAIL PROTECTED] To: [EMAIL PROTECTED] Hi, This does still occur with 2.6.22; with a blank tape in my HP DDS-4 drive: $ tar tzvf /dev/nst0 tar: /dev/nst0: Cannot read: Input/output error tar: At beginning of tape, quitting now tar: Error is not recoverable: exiting now gzip: stdin: unexpected end of file tar: Child returned status 2 tar: Error exit delayed from previous errors Nothing gets logged anywhere, which fits the original bug description. This is a well-known issue: see for example http://www.sibbald.com/bacula/html-manual/Bacula_Console.html (search for blank tape). Regards, Stephen -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED] - End forwarded message - - To unsubscribe from this list: send the line unsubscribe linux-ide in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: (fwd) Bug#11922: I/O error on blank tapes
On Mon, 2008-02-04 at 22:28 +0100, Borislav Petkov wrote: On Mon, Feb 04, 2008 at 03:22:06PM +0100, maximilian attems wrote: (Added Bart to CC) hello borislav, may i forward you that *old* Debian kernel bug, have seen you working on ide-tape: http://bugs.debian.org/11922 no we don't carry any ide patches anymore. maybe you've already fixed it in latest? thanks -- maks - Forwarded message from Stephen Kitt [EMAIL PROTECTED] - Subject: Bug#11922: I/O error on blank tapes Date: Sat, 1 Dec 2007 19:06:18 +0100 From: Stephen Kitt [EMAIL PROTECTED] To: [EMAIL PROTECTED] Hi, This does still occur with 2.6.22; with a blank tape in my HP DDS-4 drive: $ tar tzvf /dev/nst0 tar: /dev/nst0: Cannot read: Input/output error That's a SCSI tape, not an IDE one. I cc'd the SCSI list James tar: At beginning of tape, quitting now tar: Error is not recoverable: exiting now gzip: stdin: unexpected end of file tar: Child returned status 2 tar: Error exit delayed from previous errors Nothing gets logged anywhere, which fits the original bug description. This is a well-known issue: see for example http://www.sibbald.com/bacula/html-manual/Bacula_Console.html (search for blank tape). Regards, Stephen -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED] - End forwarded message - Hi Maks, we're currently in the process of aggressively cleaning up ide-tape. However, this brings (almost) no functional changes to the driver and we haven't looked at any bugs that might exist. Actually, I wanted to probe the community to see whether anyone is using ide-tape at all, and if not, to remove it completely. Since i don't have the hardware, i'm gonna have to ask you (or Stephen) to wait until all changes have entered mainline and then to try to reproduce the bug again after having enabled debugging (IDETAPE_DEBUG_LOG) and send me the syslog output. Thanks. - To unsubscribe from this list: send the line unsubscribe linux-ide in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: (fwd) Bug#11922: I/O error on blank tapes
On Mon, Feb 04, 2008 at 03:22:06PM +0100, maximilian attems wrote: (Added Bart to CC) hello borislav, may i forward you that *old* Debian kernel bug, have seen you working on ide-tape: http://bugs.debian.org/11922 no we don't carry any ide patches anymore. maybe you've already fixed it in latest? thanks -- maks - Forwarded message from Stephen Kitt [EMAIL PROTECTED] - Subject: Bug#11922: I/O error on blank tapes Date: Sat, 1 Dec 2007 19:06:18 +0100 From: Stephen Kitt [EMAIL PROTECTED] To: [EMAIL PROTECTED] Hi, This does still occur with 2.6.22; with a blank tape in my HP DDS-4 drive: $ tar tzvf /dev/nst0 tar: /dev/nst0: Cannot read: Input/output error tar: At beginning of tape, quitting now tar: Error is not recoverable: exiting now gzip: stdin: unexpected end of file tar: Child returned status 2 tar: Error exit delayed from previous errors Nothing gets logged anywhere, which fits the original bug description. This is a well-known issue: see for example http://www.sibbald.com/bacula/html-manual/Bacula_Console.html (search for blank tape). Regards, Stephen -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED] - End forwarded message - Hi Maks, we're currently in the process of aggressively cleaning up ide-tape. However, this brings (almost) no functional changes to the driver and we haven't looked at any bugs that might exist. Actually, I wanted to probe the community to see whether anyone is using ide-tape at all, and if not, to remove it completely. Since i don't have the hardware, i'm gonna have to ask you (or Stephen) to wait until all changes have entered mainline and then to try to reproduce the bug again after having enabled debugging (IDETAPE_DEBUG_LOG) and send me the syslog output. Thanks. -- Regards/Gruß, Boris. - To unsubscribe from this list: send the line unsubscribe linux-ide in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
