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тАО08-05-2004 08:59 AM
тАО08-05-2004 08:59 AM
Hi,
I am going to replace a 9G broken disk with a 36g new disk. No special requirement, but I would need advise about VG creation:
1) Is is OK to create just one VG and one lvol of 36G?
2) if not, 36G/2, would that be good?
3) what is the advantage/disadvantage of 1) and 2)?
Thanks a lot,
Steven
I am going to replace a 9G broken disk with a 36g new disk. No special requirement, but I would need advise about VG creation:
1) Is is OK to create just one VG and one lvol of 36G?
2) if not, 36G/2, would that be good?
3) what is the advantage/disadvantage of 1) and 2)?
Thanks a lot,
Steven
Steve
Solved! Go to Solution.
3 REPLIES 3
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тАО08-05-2004 09:05 AM
тАО08-05-2004 09:05 AM
Solution
All depends what you're using it for and how you want it organized. For general purpose data storage for a single system, there's probably not a lot of need to get complex with it, IMO... a single VG with a single LV can work quite satisfactorily for that.
--
Jeff Traigle
Jeff Traigle
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тАО08-05-2004 09:12 AM
тАО08-05-2004 09:12 AM
Re: VG Size Advise
I always cringe when I see a single disk anything because there is no mirror. Well, okay, you could mirror on the same disk but that's about as useful as feathers on a turtle.
That having been said, I would simply create the LVOL and filesystem as big as you now need it and let the remaining space go unused. It's so easy to extend LVOL's and filesystems (especially with OnlineJFS but easy enough if not) that it is not worth worrying about. Shrinking LVOL's and filesystems can be done but I never trust it enough to do it without a backup; on the other hand, I routinely extend LVOL's with no backup. I even let VP/O do it automatically within limits.
That having been said, I would simply create the LVOL and filesystem as big as you now need it and let the remaining space go unused. It's so easy to extend LVOL's and filesystems (especially with OnlineJFS but easy enough if not) that it is not worth worrying about. Shrinking LVOL's and filesystems can be done but I never trust it enough to do it without a backup; on the other hand, I routinely extend LVOL's with no backup. I even let VP/O do it automatically within limits.
If it ain't broke, I can fix that.
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тАО08-05-2004 02:22 PM
тАО08-05-2004 02:22 PM
Re: VG Size Advise
1) Of course~~
2) That's OK.
3) I think it's not difference
To addition, One physical disk can't be divided with two volume groups.
Good day~~
2) That's OK.
3) I think it's not difference
To addition, One physical disk can't be divided with two volume groups.
Good day~~
I think I am a specialist in IT Korea^^. I am a programmer and SE and DBA
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