Only one tape for data and logs ? (OnBar)

Hi Informixers I have an one server that has HPUX-10.20, IDS 7.30UC6 and unfortunately only one tape drive. I was going to use ISM+OnBar on the server, but after my experiments I figured out with the programs. Maybe somebody can explain me what's wrong with my ISM or OnBar configurations. Let's start. ;) ONCONFIG # System Archive Tape Device TAPEDEV /dev/rmt/0m # Tape device path TAPEBLK 16 # Tape block size (Kbytes) TAPESIZE 4000000 # Maximum amount of data to put on tape (Kbytes) # Log Archive Tape Device LTAPEDEV /dev/rmt/0m # Log tape device path LTAPEBLK 16 # Log tape block size (Kbytes) LTAPESIZE 4000000 # Max amount of data to put on log tape (Kbytes) # Backup/Restore variables BAR_ACT_LOG /opt/informix/logs/bar_act.log BAR_MAX_BACKUP 0 BAR_RETRY 1 LOG_BACKUP_MODE CONT BAR_NB_XPORT_COUNT 20 BAR_XFER_BUF_SIZE 31 BAR_BSALIB_PATH /opt/informix/lib/libbsa.sl ISM_DATA_POOL ISMData ISM_LOG_POOL ISMData RESTARTABLE_RESTORE on Yeah. You're right. I'd like to keep a data and logs in one pool, because it's very inconvenient to change a tape three times when you make a data backup. Documentation says nothing that I CANNOT use one pool for data and logs. Backup (onbar -b -L 0 ) was made successful without any problems and logical logs was backup without any problem. Everything looks well. However I run into with a trouble when I start recovering from my nice backup. onbar -r -O test_dbspace online.log 14:50:07 Physical Restore of test_dbspace started. 14:50:07 Physical Restore of test_dbspace ABORTED. 14:50:07 Aborted by client. bar_act.log 1999-05-19 14:50:31 1385 1384 /opt/informix/bin/onbar_d -r -O test_dbspace 1999-05-19 14:50:33 1385 1384 Successfully connected to Storage Manager. 1999-05-19 14:50:43 1385 1384 XBSA Error (BSAGetObject): An unspecified XBSA error has occurred: 18 ~/ism/logs/daemon.log 05/19/99 14:51:41 nsrd: /dev/rmt/0m verify label operation in progress 05/19/99 14:51:37 nsrd: /dev/rmt/0m mount operation in progress 05/19/99 14:52:24 nsrd: my_server.com:INFORMIX:/my_server/test_dbspace/0 (5/19/99) starting read from My_server.ISMData.0003 of 7.6 MB 05/19/99 14:52:26 nsrd: media info: can not read record 0 of file 4 on 4mm tape My_server.ISMData.0003 05/19/99 14:52:27 nsrd: yyzcoit.yyz-co.ca.dhl.com:INFORMIX:/my_server/test_dbspace /0 (5/19/99) done reading xbsa.messages XBSA-1.0.1 1.00.UB1.122 13279 Wed May 19 14:51:28 1999 _nwbsa_close_restore_session: received a network error (Severity 0 Number -7): can not read record 0 of file 4 on 4mm tape My_server.ISMData.0003 The question is what's wrong ? If there were wrong nothing how can I keep the data and logs on one tape ? Eugene Nechayev --== Sent via Deja.com http://www.deja.com/ ==-- ---Share what you know. Learn what you don't.---

In article <7i1nir$dis$1@nnrp1.deja.com>, Eugene Nechayev <4new@my-dejanews.com> wrote: > Hi Informixers > > I have an one server that has HPUX-10.20, IDS 7.30UC6 and unfortunately > only one tape drive. [...] > Yeah. You're right. I'd like to keep a data and logs in one pool, > because it's very inconvenient > to change a tape three times when you make a data backup. > Documentation says nothing that I CANNOT use one pool for data and > logs. Is your tape device rewind or non-rewind? If first, then your tape gets rewound after each 'close file' call. And your logs are written right on top of your just backed up data. Take a look into your /dev, there must be links to /dev/rmt, something like /dev/nStp0 (rewind) and /dev/nrStp0 (non-rewind). Actually, this is a question I'd like to ask. I have 40 Gb tape drive and I'm using similar approach. My tape layout looks like: - time stamp, archive level, slot number, some additional info - archive of all DB's (ontape -s -L 0) - time stamp, log number used during back up, etc. - logical logs archive (ontape -a) I never restored the archive using these tapes and would like to know if someone did. From Informix point of view it shouldn't be a problem - I mount a tape, I skip certain amount of files, setting the tape to the beginning of a file (DB or logs archive) and say: read this device. Any comments everyone? Thank you, Alex. -- Before the accident, I even could not spell UNIX --== Sent via Deja.com http://www.deja.com/ ==-- ---Share what you know. Learn what you don't.---