From: Sukhjeet Singh (Sukhjeets@INVERA.COM)
Date: Tue Jul 16 2002 - 10:11:43 EDT
By default, a VG has a limit of 32 PV. Using the chvg command with the -t
option, you can decrease the PV limit and increase the number of PPs per PV.
The only affect it has on the VG is that the number of PVs for the VG is
decreased. The following list is for each factor:
factor PPs per PV PVs per VG
1 1016 32
2 2032 16
3 3048 10
4 4064 8
5 5080 6
6 6096 5
7 7112 4
8 8128 3
(never tested the rest)
Thanks,
_______________________
SUKHJEET SINGH
Technology Consultant
IBM Certified Specialist - AIX
(514) 935-8170 ext: 2240
sukhjeets@invera.com
_______________________
-----Original Message-----
From: cbaker@GOODYEAR.COM [mailto:cbaker@GOODYEAR.COM]
Sent: Tuesday, July 16, 2002 10:00 AM
To: aix-l@Princeton.EDU
Subject: Re: Too many PPs in a PV
Where do you see that?
How is that set?
What effect does that have on the VG?
Christopher M. Baker
Senior Technical Support Analyst
DSE/TCO
Goodyear Tire and Rubber Company
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May not be copied or disseminated without the expressed
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Basim Chafik
<basimc@INVER To: aix-l@Princeton.EDU
A.COM> cc:
Sent by: IBM Subject: Re: Too many PPs in a
PV
AIX
Discussion
List
<aix-l@Prince
ton.EDU>
07/16/2002
09:49 AM
Please
respond to
IBM AIX
Discussion
List
The factor on the VG is set to 3
Basim Chafik
Senior Technology Consultant
IBM Certified Advanced Technical Expert - RS/6000 AIX
Invera Inc.
-----Original Message-----
From: cbaker@GOODYEAR.COM [mailto:cbaker@GOODYEAR.COM]
Sent: Tuesday, July 16, 2002 9:32 AM
To: aix-l@Princeton.EDU
Subject: Too many PPs in a PV
I inherited a RS/6000 44P-270 running AIX 433 ML06. It has a volume group
called "sharevg" with the following settings:
rds1234:root: / > lsvg sharevg
VOLUME GROUP: sharevg VG IDENTIFIER: 0008140fc9666069
VG STATE: active PP SIZE: 4 megabyte(s)
VG PERMISSION: read/write TOTAL PPs: 4338 (17352
megabytes)
MAX LVs: 256 FREE PPs: 305 (1220
megabytes)
LVs: 5 USED PPs: 4033 (16132
megabytes)
OPEN LVs: 5 QUORUM: 2
TOTAL PVs: 1 VG DESCRIPTORS: 2
STALE PVs: 0 STALE PPs: 0
ACTIVE PVs: 1 AUTO ON: yes
MAX PPs per PV: 6096 MAX PVs: 5
rds1234:root: / >
How is it possible that the PP SIZE is only 4 Mb for a 18 Gb drive?
Doesn't AIX 4.3 restrict you to a MAX PPs per PV of 1016?
Here is the same box's rootvg.
rds1234:root: / > lsvg rootvg
VOLUME GROUP: rootvg VG IDENTIFIER: 0008140fa19742d0
VG STATE: active PP SIZE: 32 megabyte(s)
VG PERMISSION: read/write TOTAL PPs: 542 (17344
megabytes)
MAX LVs: 256 FREE PPs: 382 (12224
megabytes)
LVs: 15 USED PPs: 160 (5120
megabytes)
OPEN LVs: 14 QUORUM: 2
TOTAL PVs: 1 VG DESCRIPTORS: 2
STALE PVs: 0 STALE PPs: 0
ACTIVE PVs: 1 AUTO ON: yes
MAX PPs per PV: 1016 MAX PVs: 32
rds1234:root: / >
Now that looks right to me.
Any thoughts would be great.
Christopher M. Baker
Senior Technical Support Analyst
DSE/TCO
Goodyear Tire and Rubber Company
=================================================
Contains Confidential and/or Proprietary Information.
May not be copied or disseminated without the expressed
written consent of The Goodyear Tire & Rubber Company.
=================================================
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