I've been running Bacula for about 6 years now to backup four sites to disk,
and it's been very reliable. I have a single Director in one site and separate
SDs in each of the four sites. I back up about 440 clients (Linux and Windows
servers, in this case) spread across the four sites. Full backups begin Friday
night and run through the weekend. Then I take differentials throughout the
work week (M-Th).
Recently, one of our sites started generating messages that intervention is
needed and it's "waiting to reserve a device." I've read through some previous
mailing list posts concerning this issue as well as areas of the Bacula
documentation, and I'm hoping increasing the Maximum Concurrent Jobs might help
with this. However, this setting exists in multiple places with different
values, and I'm not sure which one(s) I should update. FWIW, there is plenty of
free space on the SD, about 8TB currently.
Below is where I'm seeing that option and the values I currently have set for
that site.
In bacula-sd.conf on the SD, it is set to 20 under Storage:
Storage { # definition of myself
Name = bacmedia02-fm.internal.shutterfly.com-sd
SDPort = 9103 # Director's port
WorkingDirectory = "/var/bacula"
Pid Directory = "/var/run"
Plugin Directory = "/usr/lib64"
Maximum Concurrent Jobs = 20
}
Also in bacula-sd.conf on the SD, it is set to 5 under Device:
Autochanger {
Name = FileChgr1
Device = FileChgr1-Dev1, FileChgr1-Dev2
Changer Command = ""
Changer Device = /dev/null
}
Device {
Name = FileChgr1-Dev1
Media Type = File1
Archive Device = /data
LabelMedia = yes; # lets Bacula label unlabeled media
Random Access = Yes;
AutomaticMount = yes; # when device opened, read it
RemovableMedia = no;
AlwaysOpen = no;
Maximum Concurrent Jobs = 5
Autochanger = yes
}
In bacula-dir.conf on the Director, it is set to 20 under Director:
Director { # define myself
Name = bacdirector01-lv.internal.shutterfly.com-dir
DIRport = 9101 # where we listen for UA connections
QueryFile = "/etc/bacula/query.sql"
WorkingDirectory = "/var/bacula"
PidDirectory = "/var/run"
Maximum Concurrent Jobs = 20
Password = "<redacted>" # Console password
Messages = Daemon
}
Also, in bacula-dir.conf on the Director, it is set to 10 under Storage:
Storage { # definition of myself
Name = FortMill2
SDPort = 9103
Address = bacmedia02-fm.internal.shutterfly.com
Password = <redacted>
Device = FileChgr1
Media Type = File1
Maximum Concurrent Jobs = 10
Autochanger = yes
Allow Compression = yes
}
It is also set to 10 in bacula-dir.conf on the Director, under Autochanger:
Autochanger {
Name = File1
# Do not use "localhost" here
Address = bacdirector01-lv.internal.shutterfly.com # N.B. Use
a fully qualified name here
SDPort = 9103
Password = "<redacted>"
Device = FileChgr1
Media Type = File1
Maximum Concurrent Jobs = 10 # run up to 10 jobs at the same time
Autochanger = File1 # point to ourself
}
And, finally, it is set to 20 in bacula-fd.conf on the clients (this is the
default, not something I set):
FileDaemon { # this is me
Name = jumphost01-fm.internal.shutterfly.com-fd
FDport = 9102 # where we listen for the director
WorkingDirectory = /opt/bacula/working
Pid Directory = /var/run
Maximum Concurrent Jobs = 20
Plugin Directory = /usr/lib64
}
Does anyone have any advice on which places I should (or should not) try
increasing the value? I'm not sure which values take precedence and how
increasing certain ones might impact things. I realize that increasing the
number of concurrent jobs will increase the disk I/O on the SD, and I'm OK with
that.
Thanks!
--Shawn
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