[Bacula-users] Bacula 5.0.2 restore files from tape very slow

Subject:

From:

"May, John" <john.may AT fugrohorizons DOT com>

To:

"'bacula-users AT lists.sourceforge DOT net'" <bacula-users AT lists.sourceforge DOT net>

Date:

Thu, 15 Jul 2010 12:07:21 -0600

I am using Bacula 5.0.2 using MySQL on Centos 5.4 x64. I’m trying to restore some files from a backup I made a couple months ago. I the restore is about 1.5 TB in size and spans two LTO4 tapes. I can start the restore just fine and the first 5GB flies by in a minute or so, then the restore sort of stalls and starts crawling. It slows down to about 1MB/s down from about 70MB/s. There are only about 15,000 files on the tapes and I am restoring to a local Raid 0 array.

I tried to bextract the files with and without a bootstrap file and the speed is still very slow. I also verified I have the correct the indexes in Mysql and I compacted the database.

At this rate, I don’t think the restore will finish, because it is going so slow.

Any ideas on what’s going on?

-- John

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