Re: TAPESIZE question.

Posted in 2012

Summary

The poster asked how to set TAPESIZE for ontape (IDS 9.40 on HP-UX 11.11) when the tape's capacity is unknown. Advice: set TAPESIZE=0 so ontape uses the device's end-of-medium detection and prompts for additional tapes; alternatively measure capacity by writing to the tape with dd (e.g. from /dev/zero or 'yes') until it errors and reading the block count. TAPESIZE=0 worked for the backup. A follow-up restore failed ("read archive backup failed code -1"); suggestions included checking that source and target run identical OS/IDS versions. The poster later said the tape issue was solved but then hit a separate KAIO/'/dev/async' error on the target, for which no resolution is recorded.

Auto-generated by DrWatson from the posts below — may be imperfect; read the full thread.

Topics: General Discussion

Paul Watson — Fri, 24 Feb 2012 22:30:02 — source: IIUG Forums & Mailing Lists

you could dd if=/dev/null os=<tape> bs=2048K and let it run, when it errors you should get a block count Cheers Paul > Hello Informix gurus, > If I do not know the capacity of the tape, how do I specify TAPESIZE so > that > whatever the maximum size of the tape can be used? I'm running with > 9.40.FC5XS > on HP11.11? > > Is it "TAPESIZE=." ? > > Thanks in advance for any inputs. > Kern -- > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > -- Paul Watson Tel: +1 913-674-0360 Mob: +1 913-387-7529 Web: www.oninit.com www.advancedatatools.com Failure is not as frightening as regret. If you want to improve, be content to be thought foolish and stupid.

↪ replying to Paul Watson

Art Kagel — Fri, 24 Feb 2012 22:32:44 — source: IIUG Forums & Mailing Lists

First you would have to have written something to the tape (and all the way to the end) otherwise it will get an IO error early on. Art Art S. Kagel Advanced DataTools (www.advancedatatools.com) Blog: http://informix-myview.blogspot.com/ Disclaimer: Please keep in mind that my own opinions are my own opinions and do not reflect on my employer, Advanced DataTools, the IIUG, nor any other organization with which I am associated either explicitly, implicitly, or by inference. Neither do those opinions reflect those of other individuals affiliated with any entity with which I am affiliated nor those of the entities themselves. On Fri, Feb 24, 2012 at 5:30 PM, Paul Watson <paul@oninit.com> wrote: > you could > > dd if=/dev/null os=<tape> bs=2048K > > and let it run, when it errors you should get a block count > > Cheers > Paul > > > Hello Informix gurus, > > If I do not know the capacity of the tape, how do I specify TAPESIZE so > > that > > whatever the maximum size of the tape can be used? I'm running with > > 9.40.FC5XS > > on HP11.11? > > > > Is it "TAPESIZE=." ? > > > > Thanks in advance for any inputs. > > Kern -- > > > > > > > > ******************************************************************************* > > Forum Note: Use "Reply" to post a response in the discussion forum. > > > > -- > Paul Watson > Tel: +1 913-674-0360 > Mob: +1 913-387-7529 > Web: www.oninit.com > > www.advancedatatools.com > > Failure is not as frightening as regret. > If you want to improve, be content to be thought foolish and stupid. > > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > > --14dae9340461af412204b9bd56cb

↪ replying to Paul Watson

Art Kagel — Fri, 24 Feb 2012 22:35:09 — source: IIUG Forums & Mailing Lists

What you could do is to set TAPESIZE to zero, take an ontape archive. If it fails then the dd command that Paul posted will tell you how much data was written. If not and ontape successfully asks for another tape, then you are good to use zero all the time. If ontape is successful but doesn't ask for another tape, then you know that you are good at least until you outgrow the length of the tape and ontape either fails or asks for another tape. Art Art S. Kagel Advanced DataTools (www.advancedatatools.com) Blog: http://informix-myview.blogspot.com/ Disclaimer: Please keep in mind that my own opinions are my own opinions and do not reflect on my employer, Advanced DataTools, the IIUG, nor any other organization with which I am associated either explicitly, implicitly, or by inference. Neither do those opinions reflect those of other individuals affiliated with any entity with which I am affiliated nor those of the entities themselves. On Fri, Feb 24, 2012 at 5:32 PM, Art Kagel <art.kagel@gmail.com> wrote: > First you would have to have written something to the tape (and all the > way to the end) otherwise it will get an IO error early on. > > Art > > Art S. Kagel > Advanced DataTools (www.advancedatatools.com) > Blog: http://informix-myview.blogspot.com/ > > Disclaimer: Please keep in mind that my own opinions are my own opinions > and do not reflect on my employer, Advanced DataTools, the IIUG, nor any > other organization with which I am associated either explicitly, > implicitly, or by inference. Neither do those opinions reflect those of > other individuals affiliated with any entity with which I am affiliated nor > those of the entities themselves. > > > > > On Fri, Feb 24, 2012 at 5:30 PM, Paul Watson <paul@oninit.com> wrote: > >> you could >> >> dd if=/dev/null os=<tape> bs=2048K >> >> and let it run, when it errors you should get a block count >> >> Cheers >> Paul >> >> > Hello Informix gurus, >> > If I do not know the capacity of the tape, how do I specify TAPESIZE so >> > that >> > whatever the maximum size of the tape can be used? I'm running with >> > 9.40.FC5XS >> > on HP11.11? >> > >> > Is it "TAPESIZE=." ? >> > >> > Thanks in advance for any inputs. >> > Kern -- >> > >> > >> > >> >> ******************************************************************************* >> > Forum Note: Use "Reply" to post a response in the discussion forum. >> > >> >> -- >> Paul Watson >> Tel: +1 913-674-0360 >> Mob: +1 913-387-7529 >> Web: www.oninit.com >> >> www.advancedatatools.com >> >> Failure is not as frightening as regret. >> If you want to improve, be content to be thought foolish and stupid. >> >> >> >> ******************************************************************************* >> Forum Note: Use "Reply" to post a response in the discussion forum. >> >> > --14dae9340b9bf7d06404b9bd5ed9

↪ replying to Art Kagel

Paul Watson — Fri, 24 Feb 2012 22:44:27 — source: IIUG Forums & Mailing Lists

/dev/null should work but if not then use /dev/zero or yes | dd of=<tape> bs=2048k Cheers Paul > First you would have to have written something to the tape (and all the > way > to the end) otherwise it will get an IO error early on. > > Art > > Art S. Kagel > Advanced DataTools (www.advancedatatools.com) > Blog: http://informix-myview.blogspot.com/ > > Disclaimer: Please keep in mind that my own opinions are my own opinions > and do not reflect on my employer, Advanced DataTools, the IIUG, nor any > other organization with which I am associated either explicitly, > implicitly, or by inference. Neither do those opinions reflect those of > other individuals affiliated with any entity with which I am affiliated > nor > those of the entities themselves. > > On Fri, Feb 24, 2012 at 5:30 PM, Paul Watson <paul@oninit.com> wrote: > >> you could >> >> dd if=/dev/null os=<tape> bs=2048K >> >> and let it run, when it errors you should get a block count >> >> Cheers >> Paul >> >> > Hello Informix gurus, >> > If I do not know the capacity of the tape, how do I specify TAPESIZE >> so >> > that >> > whatever the maximum size of the tape can be used? I'm running with >> > 9.40.FC5XS >> > on HP11.11? >> > >> > Is it "TAPESIZE=." ? >> > >> > Thanks in advance for any inputs. >> > Kern -- >> > >> > >> > >> >> > ******************************************************************************* >> > Forum Note: Use "Reply" to post a response in the discussion forum. >> > >> >> -- >> Paul Watson >> Tel: +1 913-674-0360 >> Mob: +1 913-387-7529 >> Web: www.oninit.com >> >> www.advancedatatools.com >> >> Failure is not as frightening as regret. >> If you want to improve, be content to be thought foolish and stupid. >> >> >> >> > ******************************************************************************* >> Forum Note: Use "Reply" to post a response in the discussion forum. >> >> > > --14dae9340461af412204b9bd56cb > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > -- Paul Watson Tel: +1 913-674-0360 Mob: +1 913-387-7529 Web: www.oninit.com www.advancedatatools.com Failure is not as frightening as regret. If you want to improve, be content to be thought foolish and stupid.

↪ replying to Art Kagel

Kern Doe — Thu, 01 Mar 2012 16:39:44 — source: IIUG Forums & Mailing Lists

Art, Remember I asked you guys about this? Ok, so setting TAPESIZE=0 seems to work fine. But it fails to restore, is it because the tape was said to be in the drive and it's actually not? please see down below. Thanks. Source host TAPEDEV=/dev/rmt/0m TAPESIZE=0 TAPEBLK=256 informix> ontape -s -L 0 Please mount tape 1 on /dev/rmt/0m and press Return to continue ... 10 percent done. 20 percent done. 30 percent done. 40 percent done. 50 percent done. Read/Write End Of Medium enabled: blocks = 2116555 Tape is full ... Please label this tape as number 1 in the arc tape sequence. This tape contains the following logical logs: 1534794 Please mount tape 2 on /dev/rmt/0m and press Return to continue ... 60 percent done. 70 percent done. 80 percent done. 90 percent done. 100 percent done. Read/Write End Of Medium enabled: blocks = 1584379 Please label this tape as number 2 in the arc tape sequence. Program over. ------------------------------ target host informix> ontape -r -rename -f chunklist.SLZ_QAS Please mount tape 1 on /dev/rmt/0m and press Return to continue ... Physical restore failed - function read archive backup failed code -1 errno 0 Program over. ________________________________ From: Art Kagel <art.kagel@gmail.com> To: ids@iiug.org Sent: Friday, February 24, 2012 5:35 PM Subject: Re: TAPESIZE question. [26363] What you could do is to set TAPESIZE to zero, take an ontape archive. If it fails then the dd command that Paul posted will tell you how much data was written. If not and ontape successfully asks for another tape, then you are good to use zero all the time. If ontape is successful but doesn't ask for another tape, then you know that you are good at least until you outgrow the length of the tape and ontape either fails or asks for another tape. Art Art S. Kagel Advanced DataTools (www.advancedatatools.com) Blog: http://informix-myview.blogspot.com/ Disclaimer: Please keep in mind that my own opinions are my own opinions and do not reflect on my employer, Advanced DataTools, the IIUG, nor any other organization with which I am associated either explicitly, implicitly, or by inference. Neither do those opinions reflect those of other individuals affiliated with any entity with which I am affiliated nor those of the entities themselves. On Fri, Feb 24, 2012 at 5:32 PM, Art Kagel <art.kagel@gmail.com> wrote: > First you would have to have written something to the tape (and all the > way to the end) otherwise it will get an IO error early on. > > Art > > Art S. Kagel > Advanced DataTools (www.advancedatatools.com) > Blog: http://informix-myview.blogspot.com/ > > Disclaimer: Please keep in mind that my own opinions are my own opinions > and do not reflect on my employer, Advanced DataTools, the IIUG, nor any > other organization with which I am associated either explicitly, > implicitly, or by inference. Neither do those opinions reflect those of > other individuals affiliated with any entity with which I am affiliated nor > those of the entities themselves. > > > > > On Fri, Feb 24, 2012 at 5:30 PM, Paul Watson <paul@oninit.com> wrote: > >> you could >> >> dd if=/dev/null os=<tape> bs=2048K >> >> and let it run, when it errors you should get a block count >> >> Cheers >> Paul >> >> > Hello Informix gurus, >> > If I do not know the capacity of the tape, how do I specify TAPESIZE so >> > that >> > whatever the maximum size of the tape can be used? I'm running with >> > 9.40.FC5XS >> > on HP11.11? >> > >> > Is it "TAPESIZE=." ? >> > >> > Thanks in advance for any inputs. >> > Kern -- >> > >> > >> > >> >> ******************************************************************************* >> > Forum Note: Use "Reply" to post a response in the discussion forum. >> > >> >> -- >> Paul Watson >> Tel: +1 913-674-0360 >> Mob: +1 913-387-7529 >> Web: www.oninit.com >> >> www.advancedatatools.com >> >> Failure is not as frightening as regret. >> If you want to improve, be content to be thought foolish and stupid. >> >> >> >> ******************************************************************************* >> Forum Note: Use "Reply" to post a response in the discussion forum. >> >> > --14dae9340b9bf7d06404b9bd5ed9 ******************************************************************************* Forum Note: Use "Reply" to post a response in the discussion forum.

↪ replying to Kern Doe

Joerg Volz — Thu, 01 Mar 2012 17:28:57 — source: IIUG Forums & Mailing Lists

You write: target host informix> ontape -r -rename -f chunklist.SLZ_QAS Please mount tape 1 on /dev/rmt/0m and press Return to continue ... Physical restore failed - function read archive backup failed code -1 errno 0 Program over. Is the target host running on the same hardware and Informix release? Ontape requests the exact release to run. Mit freundlichen Grüßen Joerg Volz ----------------------------------------------------------------------------- -----Original Message----- From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of Kern Doe Sent: Thursday, March 01, 2012 5:46 PM To: ids@iiug.org Subject: Re: TAPESIZE question. [26419] Art, Remember I asked you guys about this? Ok, so setting TAPESIZE=0 seems to work fine. But it fails to restore, is it because the tape was said to be in the drive and it's actually not? please see down below. Thanks. Source host TAPEDEV=/dev/rmt/0m TAPESIZE=0 TAPEBLK=256 informix> ontape -s -L 0 Please mount tape 1 on /dev/rmt/0m and press Return to continue ... 10 percent done. 20 percent done. 30 percent done. 40 percent done. 50 percent done. Read/Write End Of Medium enabled: blocks = 2116555 Tape is full ... Please label this tape as number 1 in the arc tape sequence. This tape contains the following logical logs: 1534794 Please mount tape 2 on /dev/rmt/0m and press Return to continue ... 60 percent done. 70 percent done. 80 percent done. 90 percent done. 100 percent done. Read/Write End Of Medium enabled: blocks = 1584379 Please label this tape as number 2 in the arc tape sequence. Program over. ------------------------------ target host informix> ontape -r -rename -f chunklist.SLZ_QAS Please mount tape 1 on /dev/rmt/0m and press Return to continue ... Physical restore failed - function read archive backup failed code -1 errno 0 Program over. ________________________________ From: Art Kagel <art.kagel@gmail.com> To: ids@iiug.org Sent: Friday, February 24, 2012 5:35 PM Subject: Re: TAPESIZE question. [26363] What you could do is to set TAPESIZE to zero, take an ontape archive. If it fails then the dd command that Paul posted will tell you how much data was written. If not and ontape successfully asks for another tape, then you are good to use zero all the time. If ontape is successful but doesn't ask for another tape, then you know that you are good at least until you outgrow the length of the tape and ontape either fails or asks for another tape. Art Art S. Kagel Advanced DataTools (www.advancedatatools.com) Blog: http://informix-myview.blogspot.com/ Disclaimer: Please keep in mind that my own opinions are my own opinions and do not reflect on my employer, Advanced DataTools, the IIUG, nor any other organization with which I am associated either explicitly, implicitly, or by inference. Neither do those opinions reflect those of other individuals affiliated with any entity with which I am affiliated nor those of the entities themselves. On Fri, Feb 24, 2012 at 5:32 PM, Art Kagel <art.kagel@gmail.com> wrote: > First you would have to have written something to the tape (and all the > way to the end) otherwise it will get an IO error early on. > > Art > > Art S. Kagel > Advanced DataTools (www.advancedatatools.com) > Blog: http://informix-myview.blogspot.com/ > > Disclaimer: Please keep in mind that my own opinions are my own opinions > and do not reflect on my employer, Advanced DataTools, the IIUG, nor any > other organization with which I am associated either explicitly, > implicitly, or by inference. Neither do those opinions reflect those of > other individuals affiliated with any entity with which I am affiliated nor > those of the entities themselves. > > > > > On Fri, Feb 24, 2012 at 5:30 PM, Paul Watson <paul@oninit.com> wrote: > >> you could >> >> dd if=/dev/null os=<tape> bs=2048K >> >> and let it run, when it errors you should get a block count >> >> Cheers >> Paul >> >> > Hello Informix gurus, >> > If I do not know the capacity of the tape, how do I specify TAPESIZE so >> > that >> > whatever the maximum size of the tape can be used? I'm running with >> > 9.40.FC5XS >> > on HP11.11? >> > >> > Is it "TAPESIZE=." ? >> > >> > Thanks in advance for any inputs. >> > Kern -- >> > >> > >> > >> >> ******************************************************************************* >> > Forum Note: Use "Reply" to post a response in the discussion forum. >> > >> >> -- >> Paul Watson >> Tel: +1 913-674-0360 >> Mob: +1 913-387-7529 >> Web: www.oninit.com >> >> www.advancedatatools.com >> >> Failure is not as frightening as regret. >> If you want to improve, be content to be thought foolish and stupid. >> >> >> >> ******************************************************************************* >> Forum Note: Use "Reply" to post a response in the discussion forum. >> >> > --14dae9340b9bf7d06404b9bd5ed9 ******************************************************************************* Forum Note: Use "Reply" to post a response in the discussion forum. ******************************************************************************* Forum Note: Use "Reply" to post a response in the discussion forum. IT Handel und Beratung Jörg Volz Bernhard-Früh-Str. 7 77855 Achern GERMANY Tel: +49 (0)7841-681651 Fax: +49 (0)7841-681654 Mobil: +49 (0)170-2989757 VAT-ID: DE201383541 http://www.it-volz.de

↪ replying to Joerg Volz

Kern Doe — Thu, 01 Mar 2012 19:00:34 — source: IIUG Forums & Mailing Lists

Thanks Joerg, that's a very good point, I'm going to check that again. However, we're also encountering a different issue on HP where the filesystem keeps intermittently hang, I'll let you know what I find out after the reboot. ________________________________ From: Joerg Volz <joerg@it-volz.de> To: ids@iiug.org Sent: Thursday, March 1, 2012 12:28 PM Subject: RE: TAPESIZE question. [26426] You write: target host informix> ontape -r -rename -f chunklist.SLZ_QAS Please mount tape 1 on /dev/rmt/0m and press Return to continue ... Physical restore failed - function read archive backup failed code -1 errno 0 Program over. Is the target host running on the same hardware and Informix release? Ontape requests the exact release to run. Mit freundlichen Grüßen Joerg Volz ----------------------------------------------------------------------------- -----Original Message----- From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of Kern Doe Sent: Thursday, March 01, 2012 5:46 PM To: ids@iiug.org Subject: Re: TAPESIZE question. [26419] Art, Remember I asked you guys about this? Ok, so setting TAPESIZE=0 seems to work fine. But it fails to restore, is it because the tape was said to be in the drive and it's actually not? please see down below. Thanks. Source host TAPEDEV=/dev/rmt/0m TAPESIZE=0 TAPEBLK=256 informix> ontape -s -L 0 Please mount tape 1 on /dev/rmt/0m and press Return to continue ... 10 percent done. 20 percent done. 30 percent done. 40 percent done. 50 percent done. Read/Write End Of Medium enabled: blocks = 2116555 Tape is full ... Please label this tape as number 1 in the arc tape sequence. This tape contains the following logical logs: 1534794 Please mount tape 2 on /dev/rmt/0m and press Return to continue ... 60 percent done. 70 percent done. 80 percent done. 90 percent done. 100 percent done. Read/Write End Of Medium enabled: blocks = 1584379 Please label this tape as number 2 in the arc tape sequence. Program over. ------------------------------ target host informix> ontape -r -rename -f chunklist.SLZ_QAS Please mount tape 1 on /dev/rmt/0m and press Return to continue ... Physical restore failed - function read archive backup failed code -1 errno 0 Program over. ________________________________ From: Art Kagel <art.kagel@gmail.com> To: ids@iiug.org Sent: Friday, February 24, 2012 5:35 PM Subject: Re: TAPESIZE question. [26363] What you could do is to set TAPESIZE to zero, take an ontape archive. If it fails then the dd command that Paul posted will tell you how much data was written. If not and ontape successfully asks for another tape, then you are good to use zero all the time. If ontape is successful but doesn't ask for another tape, then you know that you are good at least until you outgrow the length of the tape and ontape either fails or asks for another tape. Art Art S. Kagel Advanced DataTools (www.advancedatatools.com) Blog: http://informix-myview.blogspot.com/ Disclaimer: Please keep in mind that my own opinions are my own opinions and do not reflect on my employer, Advanced DataTools, the IIUG, nor any other organization with which I am associated either explicitly, implicitly, or by inference. Neither do those opinions reflect those of other individuals affiliated with any entity with which I am affiliated nor those of the entities themselves. On Fri, Feb 24, 2012 at 5:32 PM, Art Kagel <art.kagel@gmail.com> wrote: > First you would have to have written something to the tape (and all the > way to the end) otherwise it will get an IO error early on. > > Art > > Art S. Kagel > Advanced DataTools (www.advancedatatools.com) > Blog: http://informix-myview.blogspot.com/ > > Disclaimer: Please keep in mind that my own opinions are my own opinions > and do not reflect on my employer, Advanced DataTools, the IIUG, nor any > other organization with which I am associated either explicitly, > implicitly, or by inference. Neither do those opinions reflect those of > other individuals affiliated with any entity with which I am affiliated nor > those of the entities themselves. > > > > > On Fri, Feb 24, 2012 at 5:30 PM, Paul Watson <paul@oninit.com> wrote: > >> you could >> >> dd if=/dev/null os=<tape> bs=2048K >> >> and let it run, when it errors you should get a block count >> >> Cheers >> Paul >> >> > Hello Informix gurus, >> > If I do not know the capacity of the tape, how do I specify TAPESIZE so >> > that >> > whatever the maximum size of the tape can be used? I'm running with >> > 9.40.FC5XS >> > on HP11.11? >> > >> > Is it "TAPESIZE=." ? >> > >> > Thanks in advance for any inputs. >> > Kern -- >> > >> > >> > >> >> ******************************************************************************* >> > Forum Note: Use "Reply" to post a response in the discussion forum. >> > >> >> -- >> Paul Watson >> Tel: +1 913-674-0360 >> Mob: +1 913-387-7529 >> Web: www.oninit.com >> >> www.advancedatatools.com >> >> Failure is not as frightening as regret. >> If you want to improve, be content to be thought foolish and stupid. >> >> >> >> ******************************************************************************* >> Forum Note: Use "Reply" to post a response in the discussion forum. >> >> > --14dae9340b9bf7d06404b9bd5ed9 ******************************************************************************* Forum Note: Use "Reply" to post a response in the discussion forum. ******************************************************************************* Forum Note: Use "Reply" to post a response in the discussion forum. IT Handel und Beratung Jörg Volz Bernhard-Früh-Str. 7 77855 Achern GERMANY Tel: +49 (0)7841-681651 Fax: +49 (0)7841-681654 Mobil: +49 (0)170-2989757 VAT-ID: DE201383541 http://www.it-volz.de ******************************************************************************* Forum Note: Use "Reply" to post a response in the discussion forum.

↪ replying to Kern Doe

Kern Doe — Thu, 01 Mar 2012 19:45:09 — source: IIUG Forums & Mailing Lists

both systems have same OS and IDS (HP-UX 11.11 and IDS 9.40. FC5XS) and the tape issue is solved. However, kernel configurations may be different, I'm running into an error while restoring: 11:33:39 IBM Informix Dynamic Server Version 9.40.FC5XS Software Serial Numbe r AAA#B000000 11:33:39 Can't open /dev/async. KAIO disabled 11:33:39 Assert Failed: kaiothread() ERROR I'm looking at how to enable KAIO... ________________________________ From: Kern Doe <kern_doe@yahoo.com> To: ids@iiug.org Sent: Thursday, March 1, 2012 2:00 PM Subject: Re: TAPESIZE question. [26428] Thanks Joerg, that's a very good point, I'm going to check that again. However, we're also encountering a different issue on HP where the filesystem keeps intermittently hang, I'll let you know what I find out after the reboot. ________________________________ From: Joerg Volz <joerg@it-volz.de> To: ids@iiug.org Sent: Thursday, March 1, 2012 12:28 PM Subject: RE: TAPESIZE question. [26426] You write: target host informix> ontape -r -rename -f chunklist.SLZ_QAS Please mount tape 1 on /dev/rmt/0m and press Return to continue ... Physical restore failed - function read archive backup failed code -1 errno 0 Program over. Is the target host running on the same hardware and Informix release? Ontape requests the exact release to run. Mit freundlichen Grüßen Joerg Volz ----------------------------------------------------------------------------- -----Original Message----- From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of Kern Doe Sent: Thursday, March 01, 2012 5:46 PM To: ids@iiug.org Subject: Re: TAPESIZE question. [26419] Art, Remember I asked you guys about this? Ok, so setting TAPESIZE=0 seems to work fine. But it fails to restore, is it because the tape was said to be in the drive and it's actually not? please see down below. Thanks. Source host TAPEDEV=/dev/rmt/0m TAPESIZE=0 TAPEBLK=256 informix> ontape -s -L 0 Please mount tape 1 on /dev/rmt/0m and press Return to continue ... 10 percent done. 20 percent done. 30 percent done. 40 percent done. 50 percent done. Read/Write End Of Medium enabled: blocks = 2116555 Tape is full ... Please label this tape as number 1 in the arc tape sequence. This tape contains the following logical logs: 1534794 Please mount tape 2 on /dev/rmt/0m and press Return to continue ... 60 percent done. 70 percent done. 80 percent done. 90 percent done. 100 percent done. Read/Write End Of Medium enabled: blocks = 1584379 Please label this tape as number 2 in the arc tape sequence. Program over. ------------------------------ target host informix> ontape -r -rename -f chunklist.SLZ_QAS Please mount tape 1 on /dev/rmt/0m and press Return to continue ... Physical restore failed - function read archive backup failed code -1 errno 0 Program over. ________________________________ From: Art Kagel <art.kagel@gmail.com> To: ids@iiug.org Sent: Friday, February 24, 2012 5:35 PM Subject: Re: TAPESIZE question. [26363] What you could do is to set TAPESIZE to zero, take an ontape archive. If it fails then the dd command that Paul posted will tell you how much data was written. If not and ontape successfully asks for another tape, then you are good to use zero all the time. If ontape is successful but doesn't ask for another tape, then you know that you are good at least until you outgrow the length of the tape and ontape either fails or asks for another tape. Art Art S. Kagel Advanced DataTools (www.advancedatatools.com) Blog: http://informix-myview.blogspot.com/ Disclaimer: Please keep in mind that my own opinions are my own opinions and do not reflect on my employer, Advanced DataTools, the IIUG, nor any other organization with which I am associated either explicitly, implicitly, or by inference. Neither do those opinions reflect those of other individuals affiliated with any entity with which I am affiliated nor those of the entities themselves. On Fri, Feb 24, 2012 at 5:32 PM, Art Kagel <art.kagel@gmail.com> wrote: > First you would have to have written something to the tape (and all the > way to the end) otherwise it will get an IO error early on. > > Art > > Art S. Kagel > Advanced DataTools (www.advancedatatools.com) > Blog: http://informix-myview.blogspot.com/ > > Disclaimer: Please keep in mind that my own opinions are my own opinions > and do not reflect on my employer, Advanced DataTools, the IIUG, nor any > other organization with which I am associated either explicitly, > implicitly, or by inference. Neither do those opinions reflect those of > other individuals affiliated with any entity with which I am affiliated nor > those of the entities themselves. > > > > > On Fri, Feb 24, 2012 at 5:30 PM, Paul Watson <paul@oninit.com> wrote: > >> you could >> >> dd if=/dev/null os=<tape> bs=2048K >> >> and let it run, when it errors you should get a block count >> >> Cheers >> Paul >> >> > Hello Informix gurus, >> > If I do not know the capacity of the tape, how do I specify TAPESIZE so >> > that >> > whatever the maximum size of the tape can be used? I'm running with >> > 9.40.FC5XS >> > on HP11.11? >> > >> > Is it "TAPESIZE=." ? >> > >> > Thanks in advance for any inputs. >> > Kern -- >> > >> > >> > >> >> ******************************************************************************* >> > Forum Note: Use "Reply" to post a response in the discussion forum. >> > >> >> -- >> Paul Watson >> Tel: +1 913-674-0360 >> Mob: +1 913-387-7529 >> Web: www.oninit.com >> >> www.advancedatatools.com >> >> Failure is not as frightening as regret. >> If you want to improve, be content to be thought foolish and stupid. >> >> >> >> ******************************************************************************* >> Forum Note: Use "Reply" to post a response in the discussion forum. >> >> > --14dae9340b9bf7d06404b9bd5ed9 ******************************************************************************* Forum Note: Use "Reply" to post a response in the discussion forum. ******************************************************************************* Forum Note: Use "Reply" to post a response in the discussion forum. 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