RE: Rmove a faulty hard drive off LVM Group

["Joann Deng" <JDeng@homestead-inc.com>]

Actually, what I want to do is to shrink the volume group such that it only contains one pv which is hdb1. Can you please tell me how to do that?

 

Thanks

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From: linux-lvm-bounces@redhat.com [mailto:linux-lvm-bounces@redhat.com] On Behalf Of mghofran@caregroup.harvard.edu
Sent: Friday, November 17, 2006 12:46 PM
To: linux-lvm@redhat.com
Subject: RE: Rmove a faulty hard drive off LVM Group

 

You are confusing the 11% free with the “Free PE”. They are not the same thing. The 11% is showing you “used / allocated” in your logical volume. Another words “15281032 / 151527604 = 11% “ however the free PE which is 160 MB, is the total unallocated space in the free bank of the volume group. You could use that to extend the existing one (151527604) or create a new one.

 

Hope that helped

 

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From: linux-lvm-bounces@redhat.com [mailto:linux-lvm-bounces@redhat.com] On Behalf Of Joann Deng
Sent: Thursday, November 16, 2006 8:10 PM
To: linux-lvm@redhat.com
Subject: Rmove a faulty hard drive off LVM Group

 

 

Hello,

 

My system is a Sun Fire X 2100 with RHEL 4.0. It has two 80G ATA SCSI disks. Right now, one of them is failing, and I need to remove it off the LVM Group.

 

Here is the LVM layout:

# df -k

Filesystem           1K-blocks      Used Available Use% Mounted on

/dev/mapper/VolGroup00-LogVol00                      151527604  15281032 128549372  11% /

/dev/sda1               101086     18896     76971  20% /boot

none                   1036912         0   1036912   0% /dev/shm

 

But when I run vgdisplay, the system only have 160MB Free PE.

 

# vgdisplay

  --- Volume group ---

  VG Name               VolGroup00

  System ID

  Format                lvm2

  Metadata Areas        2

  Metadata Sequence No  3

  VG Access             read/write

  VG Status             resizable

  MAX LV                0

  Cur LV                2

  Open LV               2

  Max PV                0

  Cur PV                2

  Act PV                2

  VG Size               148.91 GB

  PE Size               32.00 MB

  Total PE              4765

  Alloc PE / Size       4760 / 148.75 GB

  Free  PE / Size       5 / 160.00 MB

  VG UUID               P7GrJk-v55z-YHlz-xPYL-v0eJ-jL6V-Cdo5OO

 

As the usage is only 11% for VolGroup00-LogVol00 as shown by “df –k”, I don’t know why I only have 160MB PE free.

I tried “pvmove /dev/sdb1”, got the error message “insufficient suitable contiguous allocatable  extents for logical volume pvmove 0:2384 more required, unable to allocate temporary LV for pvmove”.

Can someone please help me out?

 

Thanks a lot in advance,

 

Joann

 

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