Good morning folks... This is my first e-mail to the list, I'm brazilian so, sorry for my english :)
My problem is follow: I have a dedicated backup server using bacula with disk and LTO-1 storages. When I was using tar/star unix commands to record the tape I was getting a transfer rate near of 45Gb/hour, what is very good (+ or - 13.5M/s). So I'd decide to install Bacula to do my backups that doesnt fit one tape more.. I'm using bacula 2.2.6 with MySQL 5.0.41 and recording data from the same server. (bacula-fd, bacula-sd, bacula-dir, mysql and all backuped data is in same server). The problem is: When using bacula I can't get more than 20Gb/hour to the tape!. I'd try with or without Spooling data (100G), using database batch-insert or not.. Below I post output of one Job: 21-Nov 02:30 bloo-dir JobId 688: Start Backup JobId 688, Job=BackupImagens.2007-11-21_00.10.25 21-Nov 02:30 bloo-dir JobId 688: Using Device "LTO-1" 21-Nov 02:30 bloo-sd JobId 688: Spooling data ... 21-Nov 03:25 bloo-sd JobId 688: Job write elapsed time = 00:55:25, Transfer rate = 14.57 M bytes/second 21-Nov 03:25 bloo-sd JobId 688: Committing spooled data to Volume "BackupProsul-0002". Despooling 48,515,247,286 bytes ... 21-Nov 05:37 bloo-sd JobId 688: Despooling elapsed time = 02:11:13, Transfer rate = 6.162 M bytes/second 21-Nov 05:37 bloo-sd JobId 688: Sending spooled attrs to the Director. Despooling 2,251,693 bytes ... 21-Nov 05:37 bloo-dir JobId 688: Bacula bloo-dir 2.2.6 (10Nov07): 21-Nov-2007 05:37:27 Build OS: i686-pc-linux-gnu mandrake (Official) JobId: 688 Job: BackupImagens.2007-11-21_00.10.25 Backup Level: Differential, since=2007-11-20 02:02:21 Client: "bloo-fd" 2.2.6 (10Nov07) i686-pc-linux-gnu,mandrake,(Official) FileSet: "Imagens" 2007-09-03 14:43:17 Pool: "BackupProsul" (From Job resource) Storage: "LTO-1" (From Job resource) Scheduled time: 21-Nov-2007 00:10:00 Start time: 21-Nov-2007 02:30:17 End time: 21-Nov-2007 05:37:27 Elapsed time: 3 hours 7 mins 10 secs Priority: 10 FD Files Written: 7,960 SD Files Written: 7,960 FD Bytes Written: 48,468,569,161 (48.46 GB) SD Bytes Written: 48,469,981,610 (48.46 GB) Rate: 4316.0 KB/s Software Compression: None VSS: no Encryption: no Volume name(s): BackupProsul-0002 Volume Session Id: 15 Volume Session Time: 1195499058 Last Volume Bytes: 94,710,712,320 (94.71 GB) Non-fatal FD errors: 0 SD Errors: 0 FD termination status: OK SD termination status: OK Termination: Backup OK 21-Nov 05:37 bloo-dir JobId 688: Begin pruning Jobs. 21-Nov 05:37 bloo-dir JobId 688: No Jobs found to prune. 21-Nov 05:37 bloo-dir JobId 688: Begin pruning Files. 21-Nov 05:37 bloo-dir JobId 688: No Files found to prune. 21-Nov 05:37 bloo-dir JobId 688: End auto prune. Check this lines: 21-Nov 03:25 bloo-sd JobId 688: Job write elapsed time = 00:55:25, Transfer rate = 14.57 M bytes/second 21-Nov 05:37 bloo-sd JobId 688: Despooling elapsed time = 02:11:13, Transfer rate = 6.162 M bytes/second First line we can see that my disks can copy (spooling) at this speed. Second we see tha transfer rate to the tape (LTO1) as 6M/s, what is very slow treating about a LTO1 tape that can reach 15M/s. I have no more ideas how improve this speed.. I'm online at #bacula @ freenode.net if someone want talk to me. Follow some configs that I concert is important: ####### bacula-sd.conf ############# Device { Name = LTO-1 Device Type = Tape Media Type = LTO Archive Device = /dev/nst0 AutomaticMount = yes; # when device opened, read it Label Media = yes; Requires Mount = no; AlwaysOpen = yes; RemovableMedia = yes; RandomAccess = no; Close on Poll = yes; Offline on Unmount = yes; Volume Poll Interval = 40 minutes; # Spooling data Maximum Spool Size = 100 Gb; Spool Directory = /backup/bacula-spool; } ######## bacula-sd.conf ################ ######## bacula-dir.conf ################ # Clients Definitions Client { Name = bloo-fd Address = 127.0.0.1 FDPort = 9102 Catalog = MyCatalog Password = "secret" File Retention = 25 days Job Retention = 6 months AutoPrune = yes # Prune expired Jobs/Files } Storage { Name = LTO-1 Address = 127.0.0.1 # N.B. Use a fully qualified name here SDPort = 9103 Password = "secret" Device = LTO-1 Media Type = LTO Autochanger = no } Job { Name = "BackupImagens" JobDefs = "DefaultJob" Level = Differential Client = bloo-fd FileSet = "Imagens" Schedule = "Imagens" Storage = LTO-1 Pool = BackupProsul Write Bootstrap = "/var/bacula/working/BackupImagens.bsr" SpoolData = yes } FileSet { Name = "Imagens" Include { Options { Signature = MD5 aclsupport = yes } File = /imagens } } Pool { Name = BackupProsul Pool Type = Backup Recycle = Yes Auto Prune = Yes Volume Retention = 25 days Label Format = BackupProsul # Maximum Volume Jobs = 11 } ######## bacula-dir.conf ################ Any comment/help will be appreciate :) -- Flávio do Carmo Júnior aka waKKu ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. 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