Subject | Re[2]: [firebird-support] Database backup test restore |
---|---|
Author | Dmitry Kuzmenko |
Post date | 2013-03-05T06:07:01Z |
Hello, Sean!
Monday, March 4, 2013, 11:42:44 PM, you wrote:
LS> You missed a key point from Rick's post ... After backup we do a ***test restore***
LS> Obviously, Rick is double checking that the backup is valid.
missed nothing. Test restore does not differ from usual restore.
LS> As for "-use_all_space " option:
I know what it does, thank you.
LS> 2 - I suspect that Rick believes that the restore will run
LS> faster, since more data will be on each page, thus less disk IO. (Personally, I have never
LS> tested the performance)
I tested restore performance, but not with that flag. Yes, no_reserve
may be faster and yes, the database has smaller size. But the
gain depends of the size of the database.
--
Dmitry Kuzmenko, www.ib-aid.com
Monday, March 4, 2013, 11:42:44 PM, you wrote:
LS> You missed a key point from Rick's post ... After backup we do a ***test restore***
LS> Obviously, Rick is double checking that the backup is valid.
missed nothing. Test restore does not differ from usual restore.
LS> As for "-use_all_space " option:
I know what it does, thank you.
LS> 2 - I suspect that Rick believes that the restore will run
LS> faster, since more data will be on each page, thus less disk IO. (Personally, I have never
LS> tested the performance)
I tested restore performance, but not with that flag. Yes, no_reserve
may be faster and yes, the database has smaller size. But the
gain depends of the size of the database.
--
Dmitry Kuzmenko, www.ib-aid.com