Bacula never rewinds either the input or output tape after it has started reading or writing unless it is going to change the tape, or in the case of reading, if there is a new job.
On Friday 16 March 2007 17:15, Damian Lubosch wrote: > Hello dear Bacula users! > > I have a problem: during a migration job my drive stops > quite often. The migration job finished with that message: > > 14-Mar 13:57 hugo-dir: The following 1 JobIds will be migrated: 3 > 14-Mar 13:57 hugo-dir: Migration using JobId=3 Job=zoii.2007-03-13_21.21.09 > 14-Mar 13:57 hugo-dir: Bootstrap records written to > /var/spool/bacula/hugo-dir.restore.1.bsr > 14-Mar 13:57 hugo-dir: > 14-Mar 13:57 hugo-dir: The job will require the following > Volume(s) Storage(s) SD Device(s) > =========================================================================== > 14-Mar 13:57 hugo-dir: > 14-Mar 13:57 hugo-dir: Platte1-Freitag0001 BackupStorageWin > BackupDev1 > 14-Mar 13:57 hugo-dir: > 14-Mar 13:57 hugo-dir: Start Migration JobId 10, > Job=freitag-tape.2007-03-14_13.57.54 > 14-Mar 13:58 hugo-sd: Ready to read from volume "Platte1-Freitag0001" on > device "BackupDev1" (/backup/bacula-backups). > 14-Mar 13:58 hugo-sd: Wrote label to prelabeled Volume "Freitag" on > device "TapeDev" (/dev/rst0) > 14-Mar 13:58 hugo-sd: Forward spacing Volume "Platte1-Freitag0001" to > file:block 0:209. > 14-Mar 18:21 hugo-sd: End of Volume at file 39 on device "BackupDev1" > (/backup/bacula-backups), Volume "Platte1-Freitag0001" > 14-Mar 18:21 hugo-sd: End of all volumes. > 14-Mar 18:21 hugo-dir: Bacula 2.0.2 (28Jan07): 14-Mar-2007 18:21:14 > Prev Backup JobId: 3 > New Backup JobId: 11 > Migration JobId: 10 > Migration Job: freitag-tape.2007-03-14_13.57.54 > Backup Level: Full > Client: hugo-fd > FileSet: "rootdir_bsd_home" 2007-03-13 21:20:21 > Read Pool: "Platte1-Freitag" (From Job resource) > Read Storage: "BackupStorageWin" (From user selection) > Write Pool: "Tape-Freitag" (From Job Pool's NextPool resource) > Write Storage: "BackupStorageTape" (From Storage from Pool's > NextPool resource) > Start time: 14-Mar-2007 13:58:00 > End time: 14-Mar-2007 18:21:14 > Elapsed time: 4 hours 23 mins 14 secs > Priority: 10 > SD Files Written: 2,159,801 > SD Bytes Written: 168,088,680,253 (168.0 GB) > Rate: 10642.6 KB/s > Volume name(s): Freitag > Volume Session Id: 1 > Volume Session Time: 1173877051 > Last Volume Bytes: 168,285,164,544 (168.2 GB) > SD Errors: 0 > SD termination status: OK > Termination: Migration OK > > Sometimes the drive ran like for 10 minutes or so without stoping, > sometimes it stopped and rewound every ten seconds. > > The transfer rate should also be 20MB/s or more, since compression is > enabled but because of the stopping it dropped to 10MB/s. > > I ran several more Migration jobs with about 150GB and the same happened. > > I am using a standard PC with 2 recent WesternDigital IDE-ATA > harddrives, my Tapedrive (Tandberg LTO2) is connected to a SCSI > controller, the computer has 512 MB RAM, and a 2.8GHz Celeron CPU, 1GBit > Intel connected to a 3com GBit switch. During the migration no other > jobs are running on the machine. > > Sometimes I noticed high database (PostgreSQL) activity. The database is > for Bacula only. Could it have to do with the 2.1 million files for backup? > > Do you experience similar behavior? I am afraid that this could shorten > my drives lifespan enormously. > > Are there any settings to speed up the tapedrive or migration? > > Thank you very much in advance, > Damian Lubosch > > > > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Bacula-users mailing list > Bacula-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bacula-users > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
