Re: [linux-lvm] Problem with vgreduce on LVM1

[Peter Smith <peter.smith@utsouthwestern.edu>]

I'm currently looking at the source code. Meanwhile, if anyone is 
inclined to look, I've captured the output of a "vgreduce data 
/dev/emcpowera -d" [1]...

Thanks,
Peter

[1] http://swlxrpx1.swmed.edu/for-linux-lvm-list-001


Peter Smith wrote:

> Well, that is interesting. When I do a "pvdata", it does show an 
> extent in use, one for each of the other LVs, but that is true for all 
> the PVs for some reason. Any ideas on how to stop that? I've already 
> tried a "pvmove" and it says the disk is empty.
>
> [root@linux archive]# pvdata /dev/emcpowera
> --- Physical volume ---
> PV Name /dev/emcpowera
> VG Name data
> PV Size 785.10 GB [1646481408 secs] / NOT usable 1 GB [LVM: 127 KB]
> PV# 1
> PV Status available
> Allocatable NO
> Cur LV 4
> PE Size (KByte) 1048576
> Total PE 784
> Free PE 784
> Allocated PE 0
> PV UUID JpYFFb-NUqC-trBf-oFm7-tbdF-65If-GZ56fw
>
> --- Volume group ---
> VG Name
> VG Access read/write
> VG Status NOT available/resizable
> VG # 0
> MAX LV 256
> Cur LV 5
> Open LV 0
> MAX LV Size 2 TB
> Max PV 256
> Cur PV 8
> Act PV 1
> VG Size 12.21 TB
> PE Size 1 GB
> Total PE 12507
> Alloc PE / Size 9078 / 886 GB
> Free PE / Size 3429 / 3.35 TB
> VG UUID 5Xw9D6-qqfu-0FTg-P9pD-40NH-wRgR-wN03ip
>
> --- List of logical volumes ---
>
> pvdata -- logical volume struct at offset 0 is empty
> pvdata -- logical volume "/dev/data/data2" at offset 1
> pvdata -- logical volume "/dev/data/data3" at offset 2
> pvdata -- logical volume "/dev/data/data4" at offset 3
> pvdata -- logical volume "/dev/data/data5" at offset 4
> pvdata -- logical volume "/dev/data/data6" at offset 5
> pvdata -- logical volume struct at offset 6 is empty
> pvdata -- logical volume struct at offset 7 is empty
> pvdata -- logical volume struct at offset 8 is empty
> pvdata -- logical volume struct at offset 9 is empty
> <SNIP>
> pvdata -- logical volume struct at offset 254 is empty
> pvdata -- logical volume struct at offset 255 is empty
> --- List of physical volume UUIDs ---
>
> 001: JpYFFb-NUqC-trBf-oFm7-tbdF-65If-GZ56fw
> 002: ABNwWZ-h4la-KTcv-VukV-T8vV-PIEP-mm38cy
> 003: oyjw8S-B1gu-snoN-k54q-bCEy-daqn-BYdDmK
> 004: URW9Kt-ZbOn-Ov3h-ZiT5-i7aC-8Lpq-c0fp4l
> 005: y16lho-UgMJ-1lfJ-GNTi-VXWH-Pot1-iIsOc0
> 006: WEC9g3-fTKD-k8pV-Nnxq-Kwn3-EkNd-qV3lUE
> 007: TCxHIb-uvjC-6xap-bLaM-lVJU-N82x-XWd10g
> 008: fZkmf8-jaYW-1gZ6-WBqp-eNu2-s1xr-IBLQTe
>
> Thanks,
> Peter
>
>
> mghofran@caregroup.harvard.edu wrote:
>
>> You show lv=4 so don't you need to check if any of those lvols were
>> using that particular disk, remove the lvol and then proceed?
>>
>> -----Original Message-----
>> From: linux-lvm-bounces@redhat.com [mailto:linux-lvm-bounces@redhat.com]
>> On Behalf Of Peter Smith
>> Sent: Tuesday, August 29, 2006 12:21 PM
>> To: linux-lvm@redhat.com
>> Subject: [linux-lvm] Problem with vgreduce on LVM1
>>
>> I can't seem to remove two physical volumes. I've removed the LVs on 
>> them. I've deactivated the PVs. But I can not remove the PVs from the
>> VG.
>>
>> Here's an example of what I'm seeing:
>>
>> [root@linux archive]# pvmove -v /dev/emcpowera
>> pvmove -- checking name of source physical volume "/dev/emcpowera"
>> pvmove -- locking logical volume manager
>> pvmove -- reading data of source physical volume from "/dev/emcpowera"
>> pvmove -- checking volume group existence
>> pvmove -- reading data of volume group "data" from lvmtab
>> pvmove -- checking volume group consistency of "data"
>> pvmove -- searching for source physical volume "/dev/emcpowera" in 
>> volume group "data"
>> pvmove -- no logical volumes on empty source physical volume 
>> "/dev/emcpowera"
>>
>> [root@linux archive]# vgreduce data /dev/emcpowera
>> vgreduce -- ERROR: can't reduce volume group "data" by used physical 
>> volume "/dev/emcpowera"
>>
>> [root@linux archive]# pvdisplay /dev/emcpowera
>> --- Physical volume ---
>> PV Name /dev/emcpowera
>> VG Name data
>> PV Size 785.10 GB [1646481408 secs] / NOT usable 1 GB [LVM: 127 KB]
>> PV# 1
>> PV Status available
>> Allocatable NO
>> Cur LV 4
>> PE Size (KByte) 1048576
>> Total PE 784
>> Free PE 784
>> Allocated PE 0
>> PV UUID JpYFFb-NUqC-trBf-oFm7-tbdF-65If-GZ56fw
>>
>> Does anyone have any idea why I can't complete a reduce?
>>
>> Thanks,
>> Peter
>>
>> Note:
>> Logical Volume Manager 1.0.8-13
>> Heinz Mauelshagen, Red Hat 03/05/2005 (IOP 10)
>>
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>> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>>
>>
>>
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>>
>>
>
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