On 2022-01-21 14:03, Peter Milesson via Bacula-users wrote:
Hi folks,
I am building a new backup server that is going to replace the old
one. The old backup server uses Bacula ver. 9.2.2 with a virtual tape
library (mhvtl). I have found mhvtl a bit tricky, mostly when updating
the OS (CentOS 7.8), as it is necessary to recompile the mhvtl kernel
driver. Mhvtl also seems a bit outdated, with intermittent development
and updates, also problematic with newer and coming Linux kernel
versions. I also want to jump off the RedHat train, as I see it
deviate more and more from mainstream Linux. Therefore, I would prefer
to choose another solution.
I have studied the Bacula documentation and it seems to be possible to
use disk based backup with auto changer role. I plan to use volumes
with a size of around 200Gbytes, making the setup fairly flexible, not
making a too big hole when volumes need to be purged. Total disk space
is around 30TB.
If somebody has got experience with disk based, multi volume Bacula
backup, I would be grateful about some information (tips, what to
expect, pitfalls, etc.).
Hi Peter,
I am using file volumes for many years and I can't recall any
special tips or pitfalls worth mentioning.
Make sure the directory ownership and permissions are correct,
that is, that storage daemon is able to access it (R/W).
There are some differences regarding options such as Random Access,
Removable Media and Device Type.
As disk is not a sequential access type of media, you should set
the Random Access option to yes. Unlike tape, a disk is not
removable media so you may want to set RemovableMedia option
to no.
Regarding the volume size, I always chose size of 10 GB.
You will need to test whether there is a gain of employing
a SpoolDirectory for your disk based backup.
If your file system containing file volumes is being
mounted over a network (e.g. using iSCSI or NFS), it might
be a good idea to use a local spool directory.
Regards!
--
Josip Deanovic
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