Re: [linux-lvm] free space and no free PE

[Klaus Strebel <klaus.strebel@gmx.net>]

Antoine schrieb:
> Hi
> 
> I'm trying to remove a PV from a VG but I'm unable to perform the pvmove 
> because the free PE doesn't match the free space on the VG.. at all.
Who do you come to this conlusion??? vgdisplay shows 677 free PE's and 
the only free PE in your PV is 677 on /dev/sdb1. So what???

The free PEs have nothing to do with the df output. You have to shrink 
your filesystem (what might be not possible, not all fs's support this) 
to get as much free PE's as your PV has.

Ex.: You wanna remove /dev/sdb1, shrink your filesystem to (size - 16.87 
GB, or better less ;-) ), shrink your LV the same way, pvmove the 
extends on the PV, remove the PV from the VG.

Ciao
Klaus

> 
> check output below, anyone has a clue why ? and how to correct this ?
> 
> pitch:~# df -h /mnt/test
> Filesystem            Size  Used Avail Use% Mounted on
> /dev/mapper/vg1-test   64G   16G   45G  27% /mnt/test
> pitch:~#
> pitch:~#
> pitch:~# vgdisplay vg1
>   --- Volume group ---
>   VG Name               vg1
>   System ID
>   Format                lvm2
>   Metadata Areas        3
>   Metadata Sequence No  6
>   VG Access             read/write
>   VG Status             resizable
>   MAX LV                0
>   Cur LV                1
>   Open LV               1
>   Max PV                0
>   Cur PV                3
>   Act PV                3
>   VG Size               67.64 GB
>   PE Size               4.00 MB
>   Total PE              17317
>   Alloc PE / Size       16640 / 65.00 GB
>   Free  PE / Size       677 / 2.64 GB
>   VG UUID               V9T0P5-PCML-z92w-GZot-Utlt-7GFF-z83i99
> pitch:~# pvmove --version
>   LVM version:     2.01.04 (2005-02-09)
>   Library version: 1.01.00-ioctl (2005-01-17)
>   Driver version:  4.1.1
> 
> pitch:~# pvdisplay
>   --- Physical volume ---
>   PV Name               /dev/sda1
>   VG Name               vg1
>   PV Size               16.87 GB / not usable 0
>   Allocatable           yes (but full)
>   PE Size (KByte)       4096
>   Total PE              4318
>   Free PE               0
>   Allocated PE          4318
>   PV UUID               64vFFO-7kRV-oAYa-6dxH-vLod-XClo-wX3h54
> 
>   --- Physical volume ---
>   PV Name               /dev/sdb1
>   VG Name               vg1
>   PV Size               16.87 GB / not usable 0
>   Allocatable           yes
>   PE Size (KByte)       4096
>   Total PE              4318
>   Free PE               677
>   Allocated PE          3641
>   PV UUID               tAGCYo-8wGA-Y1Nr-8d0T-Wn0d-k9PW-Nf5bYj
> 
>   --- Physical volume ---
>   PV Name               /dev/sdc1
>   VG Name               vg1
>   PV Size               33.91 GB / not usable 0
>   Allocatable           yes (but full)
>   PE Size (KByte)       4096
>   Total PE              8681
>   Free PE               0
>   Allocated PE          8681
>   PV UUID               ZYn0Lr-rVyB-9geT-pbfN-VQCg-vhcO-kHCYin
> 
> pitch:~# lvdisplay
>   --- Logical volume ---
>   LV Name                /dev/vg1/test
>   VG Name                vg1
>   LV UUID                Bge5z0-EWMD-vnQs-a08Y-beJR-uyFO-dxg0sj
>   LV Write Access        read/write
>   LV Status              available
>   # open                 1
>   LV Size                65.00 GB
>   Current LE             16640
>   Segments               5
>   Allocation             contiguous
>   Read ahead sectors     0
>   Block device           254:1


-- 
Mit freundlichen Gr�ssen / best regards

Klaus Strebel, Dipl.-Inform. (FH), mailto:klaus.strebel@gmx.net

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