* [linux-lvm] free space and no free PE
@ 2005-08-26 11:00 Antoine
2005-08-26 11:52 ` Klaus Strebel
0 siblings, 1 reply; 3+ messages in thread
From: Antoine @ 2005-08-26 11:00 UTC (permalink / raw)
To: LVM general discussion and development
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.
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
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [linux-lvm] free space and no free PE
2005-08-26 11:00 [linux-lvm] free space and no free PE Antoine
@ 2005-08-26 11:52 ` Klaus Strebel
2005-08-26 12:31 ` Antoine
0 siblings, 1 reply; 3+ messages in thread
From: Klaus Strebel @ 2005-08-26 11:52 UTC (permalink / raw)
To: LVM general discussion and development
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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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [linux-lvm] free space and no free PE
2005-08-26 11:52 ` Klaus Strebel
@ 2005-08-26 12:31 ` Antoine
0 siblings, 0 replies; 3+ messages in thread
From: Antoine @ 2005-08-26 12:31 UTC (permalink / raw)
To: LVM general discussion and development
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
>
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2005-08-26 11:00 [linux-lvm] free space and no free PE Antoine
2005-08-26 11:52 ` Klaus Strebel
2005-08-26 12:31 ` Antoine
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