I know this has probably been asked on the list before but i have searched and
read the docs and would like a to ask one more time please. I seem to have a
great deal of difficulty understanding the pruning, volume retention periods,
and the like. It can take a great deal of time to identify a problem as you
must wait months to reach a fully running backup state.
Here is what i would like to achieve, I would like a FULL backup once per month
on the first of the month. Also i would like incremental backups every day for
the rest of the month. Since i am using harddisk as storage, space is limited
and i do not really see a need for differential backups these are mostly for
tapes right? Please someone correct me if i am incorrect about this. Therefore
i have created a simple schedule like this
Schedule {
Name = "First"
Run = Level=Full on 1 at 05:05
Run = Level=Incremental on 2-31 at 05:05
}
I am hoping Bacula takes into account some months are not 31 days long and will
adjust accordingly therefore i have chosen to keep things consistent and use
months for my volume retention and purge recycle stuff too.
My next concern is the limited storage space and cost of Bandwidth so I only
wish to do FULL backup once per month. I read in the documentation that it is
best to have retention period 2 times the length of the full backup. But which
ones Volume, Files or Jobs please help.
Pool {
Name = canmail
Pool Type = Backup
Recycle = yes # Bacula can automatically recycle Volumes
AutoPrune = yes # Prune expired volumes
Volume Retention = 2 months # one year
}
JobDefs {
Name = "DefaultJob"
Type = Backup
Level = Incremental
Client = Default-fd
FileSet = "Full Set Unix"
Schedule = "First"
Storage = File
Messages = Standard
Pool = Default
Priority = 10
}
Job {
Name = "canmail.org"
Client = canmail.org-fd
JobDefs = "DefaultJob"
Pool = canmail
FileSet = "canmail.org"
Storage = canmail
Write Bootstrap = "/var/db/bacula/canmail.org.bsr"
}
Client {
Name = canmail.org-fd
Address = 66.244.200.225
FDPort = 9102
Catalog = MyCatalog
Password = "xxxx" # password for FileDa
File Retention = 1 months # 30 days
Job Retention = 2 months # six months
AutoPrune = yes # Prune expired Jobs/Files
}
In summary i would like to know if 1 month file retention is enough as i do not
want to be doing a FULL backup more that once per month because i set something
wrong.
Will any of the directives i have in my bacula-dir.conf file cause bacula to
save only one full backup or worst case 2 full backups and the incrementals.
Then at the end of the 2 month period i want bacula to purge the catalog and
recycle the volume.
IE i do not want a bunch of data on the file system older than one or two full
backups nor do i want this data in the catalog for more than the 2 month
period.
IDEALLY one Full Backup and the incrementals would be erased as soon as the 2nd
FULL backup is taken this would make sense right? Will I achieve this with my
directives or do i need to add something or change something Max volumes = 1.
I seem to be lost within the flexibility of Bacula.
Please is this a sensible to to get a full month of backups and not much more I
do not want files or catalogs going back a year.
A HUGE THANK YOU to whomever tries to help me figure this out i am close but
just cant quite visualize it yet.
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