Hi, I'm configuring Bacula backups and sometimes it is very slow to back up to disk or tape, around 1 MB/s and sometimes slower. I'm wondering why it is sometimes so slow and if there is something I can do differently that will speed up the backups. I want to do backups of about 1 TB (or more) of user data, and 1 MB/s is far too slow. I also want to back up operating systems of various Linux servers and imaging data (currently stored locally).
As a test, I ran a Bacula backup of several operating system directories of the backup computer, and it took about 6 hours. Here are details: The directories were /bin, /boot, /etc, /lib, /lib64, /opt, /root, /sbin, /srv, /usr Level = Full Disk pool Computed SHA1 signature >From the log file: 02-Dec 20:16 jubjub-sd JobId 547: Job write elapsed time = 06:03:29, Transfer rate = 216.4 K Bytes/second Elapsed time: 6 hours 13 mins 54 secs FD Files Written: 391,549 SD Files Written: 391,549 FD Bytes Written: 4,486,000,544 (4.486 GB) SD Bytes Written: 4,720,733,845 (4.720 GB) Rate: 200.0 KB/s Software Compression: None Encryption: yes Accurate: no I repeated the backup with no encryption and then repeated it with no SHA1 signature computing, but in each case the rate was still about 200 KB/s. Previously I set up Bacula backups of large tarfiles of imaging data. It runs every night, and it takes a few minutes to back up 4 GB. Here are details of last night's backups, which are typical: Level = Incremental Tape pool (LTO6) Computed SHA1 signature >From the log file: 09-Dec 01:08 jubjub-sd JobId 570: Job write elapsed time = 00:01:29, Transfer rate = 45.95 M Bytes/second Elapsed time: 3 mins 23 secs FD Files Written: 71 SD Files Written: 71 FD Bytes Written: 4,089,746,704 (4.089 GB) SD Bytes Written: 4,089,800,810 (4.089 GB) Rate: 20146.5 KB/s Software Compression: None Encryption: yes Accurate: no These are all local backups, and the same MySQL database was used for all of these backups. For some reason the backups of operating system directories were 100x slower than backups of imaging data. Does anyone know what's causing the OS backups to be so slow and what I can do to speed them up? OS: Ubuntu 14.04 LTS Bacula 5.2.6 16 GB memory, dual quad core, 2.33 GHz Thanks, Dave IMPORTANT NOTICE: This e-mail is meant only for the use of the intended recipient. It may contain confidential information which is legally privileged or otherwise protected by law. If you received this e-mail in error or from someone who is not authorized to send it to you, you are strictly prohibited from reviewing, using, disseminating, distributing or copying the e-mail. PLEASE NOTIFY US IMMEDIATELY OF THE ERROR BY RETURN E-MAIL AND DELETE THIS MESSAGE FROM YOUR SYSTEM. Thank you for your cooperation.
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