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



you're right, I wrongly assumed that PE = space

thanks

Klaus Strebel wrote:

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





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