RE: [flexbackup-help] blksize parameters
Hi list and niall Special thanks for you Niall again. Here is one of my last question about flex and then it will be ok. I would like to backup only certains files but not all the directory Is it possible ?? I think not but maybe. Thanks for reply -Message d'origine- De : Niall Brosnan [mailto:[EMAIL PROTECTED] Envoyé : mercredi 8 juin 2005 10:51 À : CHEVALIER, Erwan -Syntegra FR Cc : flexbackup-help@lists.sourceforge.net Objet : RE: [flexbackup-help] blksize parameters CHEVALIER, Erwan wrote: > It's ok. > Success. > Yes, Thanks for all Niall > So now parameters working. > In order to all understand, what is the difference between nst0 and st0. > Someone had explain to me: > St0: When you backup the device rewind then after each record. > Not on st0. > If it's true how it can block a test?? > This is the last question for you Master . > Bye and thanks again. Hi Erwan, great! The non-rewinding device (nst0) allows multiple archives on one tape. During the test, flexbackup writes several files to tape. Then it compares them back against where they should be on tape: e.g. It counts 2 records forward and then compares the third file. The difference comes when you write multiple files: NST0 += FILE 1 -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=+ NST0 += FILE 1 -= | = FILE 2 -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=+ NST0 += FILE 1 -= | = FILE 2 -= | = FILE 3 -=-=-=-=-=-=-=-=-=-=-=+ NST0 += FILE 1 -= | = FILE 2 -= | = FILE 3 -= | = FILE 4 -=-=-=-=+ ST0 += FILE 1 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=+ ST0 += FILE 2 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=+ ST0 += FILE 3 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=+ ST0 += FILE 4 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=+ Now when you compare FILE 1 on disk to FILE 1 on tape, it is succesful for /dev/nst0, but fails for /dev/st0 as FILE 1 != FILE 4 flexbackup should really trap that particular error, and suggest that you use the non-rewinding device. It is however, clearly marked in the config. Good luck with your restore, Niall > -Message d'origine- > De : Niall Brosnan [mailto:[EMAIL PROTECTED] Envoyé : mardi 7 > juin 2005 19:28 À : CHEVALIER, Erwan -Syntegra FR Cc : > flexbackup-help@lists.sourceforge.net > Objet : RE: [flexbackup-help] blksize parameters > > Hi Erwan, > thanks for your perseverance. > > Your config file is still set to > $device = '/dev/st0' ; though, > > It really HAS to be the non rewinding device, /dev/nst0 > > On my system, this error gives the same error that you are seeing. > > Niall > This email may contain information which is privileged or confidential. If you are not the intended recipient of this email, please notify the sender immediately and delete it without reading, copying, storing, forwarding or disclosing its contents to any other person Thank you Check us out at http://www.bt.com/consulting --- This SF.Net email is sponsored by: NEC IT Guy Games. How far can you shotput a projector? How fast can you ride your desk chair down the office luge track? If you want to score the big prize, get to know the little guy. Play to win an NEC 61" plasma display: http://www.necitguy.com/?r ___ flexbackup-help mailing list flexbackup-help@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flexbackup-help
RE: [flexbackup-help] blksize parameters
CHEVALIER, Erwan wrote: > It's ok. > Success. > Yes, Thanks for all Niall > So now parameters working. > In order to all understand, what is the difference between nst0 and st0. > Someone had explain to me: > St0: When you backup the device rewind then after each record. > Not on st0. > If it's true how it can block a test?? > This is the last question for you Master . > Bye and thanks again. Hi Erwan, great! The non-rewinding device (nst0) allows multiple archives on one tape. During the test, flexbackup writes several files to tape. Then it compares them back against where they should be on tape: e.g. It counts 2 records forward and then compares the third file. The difference comes when you write multiple files: NST0 += FILE 1 -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=+ NST0 += FILE 1 -= | = FILE 2 -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=+ NST0 += FILE 1 -= | = FILE 2 -= | = FILE 3 -=-=-=-=-=-=-=-=-=-=-=+ NST0 += FILE 1 -= | = FILE 2 -= | = FILE 3 -= | = FILE 4 -=-=-=-=+ ST0 += FILE 1 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=+ ST0 += FILE 2 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=+ ST0 += FILE 3 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=+ ST0 += FILE 4 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=+ Now when you compare FILE 1 on disk to FILE 1 on tape, it is succesful for /dev/nst0, but fails for /dev/st0 as FILE 1 != FILE 4 flexbackup should really trap that particular error, and suggest that you use the non-rewinding device. It is however, clearly marked in the config. Good luck with your restore, Niall > -Message d'origine- > De : Niall Brosnan [mailto:[EMAIL PROTECTED] > Envoyé : mardi 7 juin 2005 19:28 > À : CHEVALIER, Erwan -Syntegra FR > Cc : flexbackup-help@lists.sourceforge.net > Objet : RE: [flexbackup-help] blksize parameters > > Hi Erwan, > thanks for your perseverance. > > Your config file is still set to > $device = '/dev/st0' ; though, > > It really HAS to be the non rewinding device, /dev/nst0 > > On my system, this error gives the same error that you are seeing. > > Niall > --- This SF.Net email is sponsored by: NEC IT Guy Games. How far can you shotput a projector? How fast can you ride your desk chair down the office luge track? If you want to score the big prize, get to know the little guy. Play to win an NEC 61" plasma display: http://www.necitguy.com/?r ___ flexbackup-help mailing list flexbackup-help@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flexbackup-help
RE: [flexbackup-help] blksize parameters
One of the last question. | buffer -m 10m -p 75 -s 10k -t -u 100 -i "/dev/nst0" | afio -t -z -D \ | /usr/bin/flexbackup -P gzip -Q -d -Q -q -Z -v -b 10k - | afio: "-" [offset 6]: Fatal error: afio: "-": Unrecognizable archive Kilobytes Out 10 | At block 1. Here is the stdout of the flexbackup -list of the only one archive I've made. My archive is ok Thanks for all -Message d'origine- De : Niall Brosnan [mailto:[EMAIL PROTECTED] Envoyé : mardi 7 juin 2005 19:30 À : CHEVALIER, Erwan -Syntegra FR Objet : RE: [flexbackup-help] blksize parameters On Tue, 7 Jun 2005 [EMAIL PROTECTED] wrote: > > [EMAIL PROTECTED] flextest]# flexbackup -test-tape-drive > -compress=false -device=st0 No, -device=/dev/nst0 > $device = '/dev/nst0'; This is your problem. Niall This email may contain information which is privileged or confidential. If you are not the intended recipient of this email, please notify the sender immediately and delete it without reading, copying, storing, forwarding or disclosing its contents to any other person Thank you Check us out at http://www.bt.com/consulting --- This SF.Net email is sponsored by: NEC IT Guy Games. How far can you shotput a projector? How fast can you ride your desk chair down the office luge track? If you want to score the big prize, get to know the little guy. Play to win an NEC 61" plasma display: http://www.necitguy.com/?r ___ flexbackup-help mailing list flexbackup-help@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flexbackup-help
RE: [flexbackup-help] blksize parameters
Hi Erwan, thanks for your perseverance. Your config file is still set to $device = '/dev/st0' ; though, It really HAS to be the non rewinding device, /dev/nst0 On my system, this error gives the same error that you are seeing. Niall --- This SF.Net email is sponsored by: NEC IT Guy Games. How far can you shotput a projector? How fast can you ride your desk chair down the office luge track? If you want to score the big prize, get to know the little guy. Play to win an NEC 61" plasma display: http://www.necitguy.com/?r=20 ___ flexbackup-help mailing list flexbackup-help@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flexbackup-help
RE: [flexbackup-help] blksize parameters (fwd)
Hi list and niall Can you run a simple tar to the drive? mt -f /dev/st0 status - I've already answered mt -f /dev/st0 rewind Nothing too [EMAIL PROTECTED] flextest]# tar cf /dev/nst0 /etc tar: Retrait de l'en-tête `/' des noms des membres mt -f /dev/st0 rewind Take time but ok tar tf /dev/nst0 Ok it show me all the tar that I've done. Try manually setting the blocksize to the same as what you're using in the script. "mt -f /dev/st0 setblk 1024" and use $mt_blksize = "1024"; I've done it and do a Flexbackup-test-tape-drive but it's not better. Thanks for all Niall This email may contain information which is privileged or confidential. If you are not the intended recipient of this email, please notify the sender immediately and delete it without reading, copying, storing, forwarding or disclosing its contents to any other person Thank you Check us out at http://www.bt.com/consulting --- This SF.Net email is sponsored by: NEC IT Guy Games. How far can you shotput a projector? How fast can you ride your desk chair down the office luge track? If you want to score the big prize, get to know the little guy. Play to win an NEC 61" plasma display: http://www.necitguy.com/?r ___ flexbackup-help mailing list flexbackup-help@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flexbackup-help
RE: [flexbackup-help] blksize parameters
RE Niall After erasing, i'll give you all infos about each questions you asked to me. What output do you get from: " mt status "? [EMAIL PROTECTED] local]# mt -f /dev/st0 status SCSI 2 tape drive:File number=0, block number=0, partition=0.Tape block size 4096 bytes. Density code 0x47( TR-5).Soft error count since last status=0General status bits on( 4101): BOT ONLINE IM_REP_EN Are you using version 1.2.1 of flexbackup? Yes OK - take compression and the tape out of your next test. Make a directory /tmp/FlexTest, set these options and run flexbackup again. $compress = 'false'; $device = '/tmp/FlexTest/'; Now " flexbackup -test-tape-drive " will say, 'No use trying tape drive tests on directories!', but it will tell you if the rest of your syntax is correct. Say nothing so syntax ok If you get no errors, run it again withoutc ompression but with the tape: $compress = 'false'; $device = '/dev/nst0'; [EMAIL PROTECTED] flextest]# flexbackup -test-tape-drive -compress=false -device=st0 flexbackup version 1.2.1 (http://flexbackup.sourceforge.net)/etc/flexbackup.conf syntax OK || Checking 'buffer' on this machine... Ok| Checking /bin/sh on this machine... bash2||T esting will *erase* the tape currently in the drive!| Hit CTRL-C to abort within 10 seconds...|| If for some reason this program does not exit within a few minutes,| Hit CTRL-C, and try adjusting $blksize, $pad_blocks, or $mt_blksize.|| Rewinding & erasing tape...| Creating index key 200506071610|At block 0. Writing test file #1 Kilobytes Out 160 At block 0. Writing test file #2Kilobytes Out 10At block 0.Writing test file #3Kilobytes Out 160At block0 . Rewinding...Skipping index label...At block 0. Reading test file #1Kilobytes Out 160At block 0.Reading test file #2Kilobytes Out 160At block0 .Reading test file #3Kilobytes Out 160At block 0. Comparing...Les fichiers /etc/flexbackup.conf et /tmp/test2.3734 sont différents. FAILURE! Problem with tape driver orp arameters. Please see the FAQor try changing the $blksize, $pad_blocks, or $mt_blksize settings. [EMAIL PROTECTED] flextest]# flexbackup -test-tape-drive -compress=false -device=nst0 flexbackup version 1.2.1/etc/flexbackup.conf syntax OK Errors: $device must be set to a directory, a local device, or a remote device Please answer the list rather than me personally, so that others may benefit and offer further advice. Good luck, Niall On Mon, 6 Jun 2005 [EMAIL PROTECTED] wrote: > Hi Niall. > Yes, I've already tried all this feature. > For the compression to I've already tried bzip, gzip, hardware and so on. > My impression is the next one. > After each > flexbackup-test-tape-drive > It send me > > Comparing... > directory /etc/flexbackup.conf and /tmp/test2.10734 are différents > > FAILURE! Problem with tape driver or parameters. Please see the FAQ > or try changing the $blksize, $pad_blocks, or $mt_blksize settings. > > SO I've tried to see what is talking about this /tmp/test. > I modified the script and I copy them into a directory and when i > open it it was just the /usr/bin/flexbackup. > SO no idea but I continue. > Thanks a lot for your help > > -Message d'origine- > De : Niall Brosnan [mailto:[EMAIL PROTECTED]] Envoyé : lundi 6 > juin 2005 11:46 À : CHEVALIER, Erwan -Syntegra FR Objet : Re: > [flexbackup-help] blksize parameters (fwd) > > Hi Erwan, > here is the message as sent to the list on Thursday. > Do you usually receive list mail? > > Hope it helps, > Niall > > -- Forwarded message -- > Date: Thu, 2 Jun 2005 11:29:06 +0100 (IST) > From: Niall Brosnan <[EMAIL PROTECTED]> > To: flexbackup-help@lists.sourceforge.net > Subject: Re: [flexbackup-help] blksizep arameters > > Dear Erwan, > > > From: [EMAIL PROTECTED] > > Dear Flexbackup users, > > I've tried all blksize between 0 and 512 which my max, and none of > > this values is correct, so anyone can explain to me, where i'm wrong. > > Here is my Flexbackup.conf > > I assume you are using linux, and you should first change this setting: > > $device = '/dev/st0'; > to > $device = '/dev/nst0'; > This is very important! > > > Dell Powervault 100T DAT 72 with magnetic tape of 36-72 GB. > If your tape drive has compression turned on, you should not use > software compression. > I would recommend us
Re: [flexbackup-help] blksize parameters
Incoming from Niall Brosnan: > > Could you include your configuration again? > " grep -v -e ^\# -v -e ^$ /etc/flexbackup.conf " > will give us just your active configuration. grep -v '^#|^$' /etc/flexbackup.conf -- Any technology distinguishable from magic is insufficiently advanced. (*)http://www.spots.ab.ca/~keeling Please don't Cc: me. - - --- This SF.Net email is sponsored by: NEC IT Guy Games. How far can you shotput a projector? How fast can you ride your desk chair down the office luge track? If you want to score the big prize, get to know the little guy. Play to win an NEC 61" plasma display: http://www.necitguy.com/?r=20 ___ flexbackup-help mailing list flexbackup-help@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flexbackup-help
RE: [flexbackup-help] blksize parameters (fwd)
Hi Erwan, I know you've probably tried most of this. Checking back on your mail of 5 May, I see: /dev/nst0: Input/output error There is nothing flexbackup can do until that is sorted. What blocksize does mt status report on a clean boot? Can you run a simple tar to the drive? mt -f /dev/st0 status mt -f /dev/st0 rewind tar cf /dev/nst0 /etc mt -f /dev/st0 rewind tar tf /dev/nst0 Try manually setting the blocksize to the same as what you're using in the script. "mt -f /dev/st0 setblk 1024" and use $mt_blksize = "1024"; Niall --- This SF.Net email is sponsored by: NEC IT Guy Games. How far can you shotput a projector? How fast can you ride your desk chair down the office luge track? If you want to score the big prize, get to know the little guy. Play to win an NEC 61" plasma display: http://www.necitguy.com/?r=20 ___ flexbackup-help mailing list flexbackup-help@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flexbackup-help
RE: [flexbackup-help] blksize parameters
Hi Erwan, Could you include your configuration again? " grep -v -e ^\# -v -e ^$ /etc/flexbackup.conf " will give us just your active configuration. What output do you get from: " mt status " ? Are you using version 1.2.1 of flexbackup? OK - take compression and the tape out of your next test. Make a directory /tmp/FlexTest, set these options and run flexbackup again. $compress = 'false'; $device = '/tmp/FlexTest/'; Now " flexbackup -test-tape-drive " will say, 'No use trying tape drive tests on directories!', but it will tell you if the rest of your syntax is correct. If you get no errors, run it again without compression but with the tape: $compress = 'false'; $device = '/dev/nst0'; Please answer the list rather than me personally, so that others may benefit and offer further advice. Good luck, Niall On Mon, 6 Jun 2005 [EMAIL PROTECTED] wrote: > Hi Niall. > Yes, I've already tried all this feature. > For the compression to I've already tried bzip, gzip, hardware and so on. > My impression is the next one. > After each > flexbackup-test-tape-drive > It send me > > Comparing... > directory /etc/flexbackup.conf and /tmp/test2.10734 are différents > > FAILURE! Problem with tape driver or parameters. Please see the FAQ > or try changing the $blksize, $pad_blocks, or $mt_blksize settings. > > SO I've tried to see what is talking about this /tmp/test. > I modified the script and I copy them into a directory > and when i open it it was just the /usr/bin/flexbackup. > SO no idea but I continue. > Thanks a lot for your help > > -Message d'origine----- > De : Niall Brosnan [mailto:[EMAIL PROTECTED] > Envoyé : lundi 6 juin 2005 11:46 > À : CHEVALIER, Erwan -Syntegra FR > Objet : Re: [flexbackup-help] blksize parameters (fwd) > > Hi Erwan, > here is the message as sent to the list on Thursday. > Do you usually receive list mail? > > Hope it helps, > Niall > > ------ Forwarded message -- > Date: Thu, 2 Jun 2005 11:29:06 +0100 (IST) > From: Niall Brosnan <[EMAIL PROTECTED]> > To: flexbackup-help@lists.sourceforge.net > Subject: Re: [flexbackup-help] blksize parameters > > Dear Erwan, > > > From: [EMAIL PROTECTED] > > Dear Flexbackup users, > > I've tried all blksize between 0 and 512 which my max, and none of > > this values is correct, so anyone can explain to me, where i'm wrong. > > Here is my Flexbackup.conf > > I assume you are using linux, and you should first change this setting: > > $device = '/dev/st0'; > to > $device = '/dev/nst0'; > This is very important! > > > Dell Powervault 100T DAT 72 with magnetic tape of 36-72 GB. > If your tape drive has compression turned on, you should not use software > compression. > I would recommend using software compression where possible as you will get > better predictions on size, and you will get better portability of your > backups. > It's far easier to recompile bzip2 for a new platform than it is to reverse > engineer a compression algorithm on a chip when your Dell tape drive dies. > > What errors are you seeing in /var/log/flexbackup ? > Why do you feel that the blksize is your problem? > > Niall > > > > > > > > This email may contain information which is privileged or confidential. If > you are not the intended recipient of this email, please notify the sender > immediately and delete it without reading, copying, storing, forwarding or > disclosing its contents to any other person > Thank you > > Check us out at http://www.bt.com/consulting > > > -- #The information transmitted in this Notice is intended only for# #the person or entity to which it is addressed and may contain # #confidential and/or privileged material. # #Any review, reproduction, retransmission, dissemination or other use # #of, or taking of any action in reliance upon, this information by # #persons or entities other than the intended recipient is prohibited. # # Niall Brosnan # Tel: +353-87-2337386# # Communication Systems Consultants # Fax: +353-1-4926806 # # Athronan, Dunsany, Co. Meath, Ireland # mail: [EMAIL PROTECTED] # # GPG key fingerprint = 597C 0514 95B9 48DD 216F B892 5B51 D257 0D44 5B01 # Un*x: Because cat is faster than a mouse. --- This SF.Net email is sponsored by: NEC IT Guy Games. How far can you shotput a projector? How fast can you ride your desk chair down the office luge track? If you want to score the big prize, get to know the little guy. Play to win an NEC 61" plasma display: http://www.necitguy.com/?r ___ flexbackup-help mailing list flexbackup-help@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flexbackup-help
RE: [flexbackup-help] blksize parameters (fwd)
Hi Niall. Yes, I've already tried all this feature. For the compression to I've already tried bzip, gzip, hardware and so on. My impression is the next one. After each flexbackup-test-tape-drive It send me Comparing... directory /etc/flexbackup.conf and /tmp/test2.10734 are différents FAILURE! Problem with tape driver or parameters. Please see the FAQ or try changing the $blksize, $pad_blocks, or $mt_blksize settings. SO I've tried to see what is talking about this /tmp/test. I modified the script and I copy them into a directory and when i open it it was just the /usr/bin/flexbackup. SO no idea but I continue. Thanks a lot for your help -Message d'origine- De : Niall Brosnan [mailto:[EMAIL PROTECTED] Envoyé : lundi 6 juin 2005 11:46 À : CHEVALIER, Erwan -Syntegra FR Objet : Re: [flexbackup-help] blksize parameters (fwd) Hi Erwan, here is the message as sent to the list on Thursday. Do you usually receive list mail? Hope it helps, Niall -- Forwarded message -- Date: Thu, 2 Jun 2005 11:29:06 +0100 (IST) From: Niall Brosnan <[EMAIL PROTECTED]> To: flexbackup-help@lists.sourceforge.net Subject: Re: [flexbackup-help] blksize parameters Dear Erwan, > From: [EMAIL PROTECTED] > Dear Flexbackup users, > I've tried all blksize between 0 and 512 which my max, and none of > this values is correct, so anyone can explain to me, where i'm wrong. > Here is my Flexbackup.conf I assume you are using linux, and you should first change this setting: > $device = '/dev/st0'; to $device = '/dev/nst0'; This is very important! > Dell Powervault 100T DAT 72 with magnetic tape of 36-72 GB. If your tape drive has compression turned on, you should not use software compression. I would recommend using software compression where possible as you will get better predictions on size, and you will get better portability of your backups. It's far easier to recompile bzip2 for a new platform than it is to reverse engineer a compression algorithm on a chip when your Dell tape drive dies. What errors are you seeing in /var/log/flexbackup ? Why do you feel that the blksize is your problem? Niall This email may contain information which is privileged or confidential. If you are not the intended recipient of this email, please notify the sender immediately and delete it without reading, copying, storing, forwarding or disclosing its contents to any other person Thank you Check us out at http://www.bt.com/consulting --- This SF.Net email is sponsored by: NEC IT Guy Games. How far can you shotput a projector? How fast can you ride your desk chair down the office luge track? If you want to score the big prize, get to know the little guy. Play to win an NEC 61" plasma display: http://www.necitguy.com/?r=20 ___ flexbackup-help mailing list flexbackup-help@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flexbackup-help
