Hi ,
I am experimenting with PITR aspect of postgres8.0,
and I needed some answers on this subject.
I have following questions :
1)
At time t0, I created a base backup. (got a backup
marker file named as:
0000000800000002000000A8.005E61B4.backup)
(assume no previous base backups and recoveries...)
On time t2 I did a recovery till time t1 ( t0<t1<t2).
Now I see history file named 00000009.history. And
then onwards, the WAL filenames start with 00000009.
Is 00000009 here the new timeline ? If so is it safe
to deduce that from .history file that gets generated
after recovery ?
2)
Now say, I was happy with the above recovery and after
a few days, at time t3 I decided to revover my db back
in time t.
What timeline should I specify in recovery.conf if:
(or do I need to specify it in each case?)
a) t1 < t < t2
b) t2 < t < t3
IMO, in case a) the timeline of base backup would be
used, so I wouldn't need to specify timeline. While in
case b) I need to specify this new
timeline(recovery_target_timeline=00000009).
Kindly confirm...
trying to put the scenario pictorially:
t0 t2
| t1 |
|-------| ------ |---------- timeline: 00000008
|
| timeline:
00000009
|----------------------|----
t3
TIA,
Satya
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