From: Green, Simon (Simon.Green@EU.ALTRIA.COM)
Date: Fri May 02 2003 - 12:28:38 EDT
If you created your filesystem with the defaults, it will be restricted to
64GB in size. You can increase the underlying logical volume by more than
that, but not the filesystem.
The key parameter is nbpi. Take a look at the man page for the crfs
command. This shows the maximum filesystem size with various combinations.
You may already realise this, but there is not a 1 to 1 relationship between
Volume Groups and either Physical or Logical Volumes: you can have many
Physical Volumes in a Volume Group - up to 32, normally. You may also have
many Logical Volumes, which may share Physical Volumes if you wish.
Unless you have a particular requirement for a single, very large filesystem
you may find it more convenient to allocate your space amongst several
filesystems. That way, when you need to perform maintenance tasks such as
fsck you're dealing with a smaller unit, which can make your life easier and
provide a better service for your users.
Simon Green
Altria ITSC Europe s.a.r.l.
AIX-L Archive at http://marc.theaimsgroup.com/?l=aix-l&r=1&w=2
AIX FAQ at http://www.faqs.org/faqs/aix-faq/
N.B. Unsolicited email from vendors will not be appreciated.
> -----Original Message-----
> From: Sue Pellerito [mailto:Sue.Pellerito@JACKINTHEBOX.COM]
> Sent: 02 May 2003 16:56
> To: aix-l@Princeton.EDU
> Subject: Re: Adding Addl Disk to Volume Group
>
>
> Thanks for the info on adding the disk. Now I am having a problem with
> determining how big to increase the filesystem. What is the formula? I
> would like to allocate all that is available on the volume
> group? I checked
> the archives but following the formulas presented only increased it by
> about 500mb. I'm sure I need to someone account for the 128
> PP Size. Below
> is the output from lsvg:
>
> $<root>/ < 392 > # lsvg emcdatavg
> VOLUME GROUP: emcdatavg VG IDENTIFIER:
> 0001389f8be75084
> VG STATE: active PP SIZE: 128
> megabyte(s)
> VG PERMISSION: read/write TOTAL PPs: 2652 (339456
> megabytes)
> MAX LVs: 256 FREE PPs: 1411 (180608
> megabytes)
> LVs: 2 USED PPs: 1241 (158848
> megabytes)
> OPEN LVs: 2 QUORUM: 3
> TOTAL PVs: 5 VG DESCRIPTORS: 5
> STALE PVs: 0 STALE PPs: 0
> ACTIVE PVs: 5 AUTO ON: yes
> MAX PPs per PV: 1016 MAX PVs: 32
>
>
>
>
>
> "Patrick B.
> O'Brien" To:
> aix-l@Princeton.EDU
> <pobrien@DOIT.NV. cc:
> GOV> Subject: Re:
> Adding Addl Disk to Volume Group
> Sent by: IBM AIX
> Discussion List
> <aix-l@Princeton.
> EDU>
>
>
> 05/01/2003 03:06
> PM
> Please respond to
> IBM AIX
> Discussion List
>
>
>
>
>
>
> Do an 'extendvg vgname hdiskname'
>
> Increase the FS and the LV will fallow by doing a, 'chfs -a
> size=new_size
> /fs_name'.
>
>
>
> -----Original Message-----
> From: Sue Pellerito [mailto:Sue.Pellerito@JACKINTHEBOX.COM]
> Sent: Thursday, May 01, 2003 2:50 PM
> To: aix-l@Princeton.EDU
> Subject: Adding Addl Disk to Volume Group
>
> Sorry for newbie question. I am new to AIX and need to
> increase the size of
> a logical volume by adding an additional EMC powerpath disk.
> I have already
> done the work on the SAN but need help with the AIX commands
> to increase
> the filesystem/logical volume/volume group. Can anyone help?
>
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