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Re: [Bacula-users] Backup strategy advice
2016-03-25 14:08:43
Ana,
Thanks for the response, answers inline...
On 03/24/2016 06:46 PM, Ana Emília M.
Arruda wrote:
Having the same media type between the two changers actually
produced a scenario wherein bacula became confused with slot numbers
and pool inventory. If memory serves, it was Kern who suggested I
use LTOa and LTOb as media types between the changers to avoid this
contention.
If however, I can mange a single set of pools/volumes/schedules
across both changers, that would be ideal...
Would this be a single bacula-sd with 2 storage resources, or 2
individual bacula-sd with a single storage resource each?
My current storage device setup...
Autochanger {
Name = Quantumi40
Device = Drive0, Drive1
Changer Command = "/usr/libexec/bacula/mtx-changer %c %o %S %a %d"
Changer Device = /dev/quantumi40
}
Autochanger {
Name = Quantumsl3
Device = Drive2
Changer Command = "/usr/libexec/bacula/mtx-changer %c %o %S %a %d"
Changer Device = /dev/quantumsl3
}
Device {
Name = Drive{0|1|2}
Drive Index = {0|1}
Media Type = LTO5{a|b}
Device Type = tape
Archive Device = /dev/tape{0|1|2}
AutomaticMount = yes;
AlwaysOpen = yes;
RemovableMedia = yes;
RandomAccess = no;
AutoChanger = yes
LabelMedia = yes;
Maximum Changer Wait = 9000
Maximum Concurrent Jobs = 1
Spool Directory = /spool/{0|1|2}
Maximum Spool Size = 100gb
Minimum block size = 1048576
Maximum block size = 1048576
Hardware End of Medium = yes
Alert Command = "sh -c 'tapeinfo -f %c |grep TapeAlert|cat'"
}
To phrase it another way, I need to have a full set of the data
offsite for 31 days at a time. Where "full set" is a full week's
worth of tapes, sent out daily after the Incremental/Full jobs run.
I suspect switching to a monthly Full, with weekly Diffs and Daily
Incremental cycle would be my way forward from here...
I think this setup would require a total of 6 pools, 3 for each
autochanger...
Here's my current thinking...
Pool {
Name = {$i40|$sl3}-{$full|$diff|$inc}Pool
Pool Type = Backup
Recycle = yes
Recycle Oldest Volume = yes
Auto Prune = yes
ScratchPool = Scratch
RecyclePool = Scratch
Volume Retention = {31|14|7} days
}
Which would make the Schedule(s) something like... Unless there's a
way to have a unified schedule/pools for both changers...
Schedule {
Name = "i40-Daily"
Run = Level=Incremental Pool=i40-IncPool tue-sun at 18:00
Run = Level=Full Pool=i40-FullPool 1st mon at 18:00
Run = Level=Differential Pool=i40-DiffPool 2nd mon at 18:00
Run = Level=Differential Pool=i40-DiffPool 3rd mon at 18:00
Run = Level=Differential Pool=i40-DiffPool 4th mon at 18:00
Run = Level=Differential Pool=i40-DiffPool 5th mon at 18:00
}
Schedule {
Name = "sl3-Daily"
Run = Level=Incremental Pool=sl3-IncPool sat-thu at 03:00
Run = Level=Full Pool=sl3-FullPool 1st fri at 03:00
Run = Level=Differential Pool=sl3-DiffPool 2nd fre at 03:00
Run = Level=Differential Pool=sl3-DiffPool 3rd fri at 03:00
Run = Level=Differential Pool=sl3-DiffPool 4th fri at 03:00
Run = Level=Differential Pool=sl3-DiffPool 5th fri at 03:00
}
Automating the restore testing would be an epic win for me... I will
dig into bls/bextract as that option never occurred to me.
My requirements...
retention: 31 days for fulls, 14 days for weekly diff, and 7 days
for daily incremental.
1. tapes written daily, multiple jobs, single client
- Full recoverable set of data every week.
2. multiple tape libraries, lto-5
- three tape drives, 56 slots between autochangers
3. tapes leave daily after successful jobs
4. every 3 months a restore test is performed from the full set,
ideally automatically
5. minimal daily involvement from my team, other than swapping tapes
in the changer mail slots.
All the best,
--eddie
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