Re: [linux-lvm] Pvmove fails... No free PE's (and lvextend does not work...)

["Heinz J . Mauelshagen" <mauelshagen@sistina.com>]

On Thu, Jan 17, 2002 at 10:18:39PM +0100, Anders Widman wrote:
> I currently use RedHat 7.2 with kernel 2.4.18-4, but I have tested most kernel versions from 2.4.16. I am also using lvm 1.0.1.
> 
> I have tried to move all extents and just a few (or even one) extents with no luck... Could it be that this disk is 120GB (114,44) and there would be some problems with that?

Hmmm.., shouldn't be the case.

Could you send me all the metadata of your VG "server" attached in private email
(mge@sistina.com) for further investigation?

You can create the copies running this script:

#!/bin/sh
for d in $(pvscan|sed '/server1/!d;s!^.* PV "!!;s!" .*$!!'); do
   dd if=$d of=$(basename $d).VGDA bs=1k count=512
done

Thanks,
Heinz

> 
> //Anders
> 
> 
> 2002-01-17 12:32:53, "Heinz J . Mauelshagen" <mauelshagen@sistina.com> wrote:
> 
> >
> >Hmmm,
> >we didn't talk about versions.
> >Which Linux/LVM version are you using?
> >
> >Another point (assuming that you might siffer from an old OBO error):
> >does the extent still fail with less than 1221 extents?
> >
> >Regards,
> >Heinz    -- The LVM Guy --
> >
> >On Wed, Jan 16, 2002 at 10:28:39PM +0100, Anders Widman wrote:
> >> Well... here is what the problem is right now.:
> >> 
> >> First I scan all physical disks to determine where I have free space to grow..
> >> 
> >> 
> >> pvscan -- reading all physical volumes (this may take a while...)
> >> pvscan -- ACTIVE   PV "/dev/hdo1" of VG "Server" [55.84 GB / 0 free]
> >> pvscan -- ACTIVE   PV "/dev/hdp1" of VG "Server" [28.56 GB / 0 free]
> >> pvscan -- ACTIVE   PV "/dev/hdm1" of VG "Server" [76.28 GB / 0 free]
> >> pvscan -- ACTIVE   PV "/dev/hdn1" of VG "Server" [76.28 GB / 0 free]
> >> pvscan -- ACTIVE   PV "/dev/hdk1" of VG "Server" [38.12 GB / 0 free]
> >> pvscan -- ACTIVE   PV "/dev/hdl1" of VG "Server" [55.84 GB / 0 free]
> >> pvscan -- ACTIVE   PV "/dev/hdg1" of VG "Server" [55.88 GB / 0 free]
> >> pvscan -- ACTIVE   PV "/dev/hdh1" of VG "Server" [55.88 GB / 0 free]
> >> pvscan -- ACTIVE   PV "/dev/hde1" of VG "Server" [114.44 GB / 38.16 GB free]
> >> pvscan -- ACTIVE   PV "/dev/hdf1" of VG "Server" [57.22 GB / 0 free]
> >> pvscan -- ACTIVE   PV "/dev/hdc1" of VG "Server" [71.53 GB / 0 free]
> >> pvscan -- ACTIVE   PV "/dev/hdd1" of VG "Server" [71.53 GB / 0 free]
> >> pvscan -- ACTIVE   PV "/dev/hdb1" of VG "Server" [4.28 GB / 0 free]
> >> pvscan -- ACTIVE   PV "/dev/hdb3" of VG "Server" [52.88 GB / 0 free]
> >> pvscan -- total: 14 [815.29 GB] / in use: 14 [815.29 GB] / in no VG: 0 [0]
> >> 
> >> --- Volume group ---
> >> VG Name               Server
> >> VG Access             read/write
> >> VG Status             available/resizable
> >> VG #                  0
> >> MAX LV                256
> >> Cur LV                1
> >> Open LV               1
> >> MAX LV Size           1.00 TB
> >> Max PV                256
> >> Cur PV                14
> >> Act PV                14
> >> VG Size               814.56 GB
> >> PE Size               32.00 MB
> >> Total PE              26066
> >> Alloc PE / Size       24845 / 776.41 GB
> >> Free  PE / Size       1221 / 38.16 GB
> >> VG UUID               ElJLCd-ln4W-k3YA-yg8W-HmVU-gs0O-mcR0pA
> >> 
> >> --- Physical volume ---
> >> PV Name               /dev/hde1
> >> VG Name               Server
> >> PV Size               114.50 GB / NOT usable 62.91 MB [LVM: 142.00 KB]
> >> PV#                   13
> >> PV Status             available
> >> Allocatable           yes
> >> Cur LV                1
> >> PE Size (KByte)       32768
> >> Total PE              3662
> >> Free PE               1221
> >> Allocated PE          2441
> >> PV UUID               7ScWsg-0vX4-ccX3-W1sO-mFnz-0Sl0-gDWKmM
> >> 
> >> -----------------------------------------------------------------------
> >> 
> >> 
> >> Now I use "lvextend -l +1221 /dev/Server/FTPRoot /dev/hde1" to grow my LV "FTPRoot". It worked fine on my new disk (to wich I also moved the old PE's from the bad disk), but not on this one. 
> What 
> >> can be the problem. Where should I even begin to look?
> >> 
> >> lvextend -- extending logical volume "/dev/Server/FTPRoot" to 814.56 GB
> >> lvextend -- not enough free/allocatable physical extents to extend logical volume /dev/Server/FTPRoot
> >> 
> >> Thanks for any help!
> >> 
> >> //Anders
> >> 
> >> 
> >> 2002-01-16 19:28:03, Anders Widman <andewid@tnonline.net> wrote:
> >> 
> >> >No, my LV is not striped, so this should have worked. Well.. I have bought another disk and will move all pe's to that one instead. Hopefully this will work better.
> >> >
> >> >//Anders
> >> >
> >> >2002-01-16 16:08:44, "Heinz J . Mauelshagen" <mauelshagen@sistina.com> wrote:
> >> >
> >> >>
> >> >>Anders,
> >> >>
> >> >>is your LV striped? In this case, pvmove complains because it can't
> >> >>move 2 stripes onto one PV.
> >> >>
> >> >>If so, you need another disk to be pvcreated/vgextend to your VG in order
> >> >>to pvmove data over.
> >> >>
> >> >>On Wed, Jan 16, 2002 at 07:52:18AM +0100, Anders Widman wrote:
> >> >>> I have a bad disk (hdl1) that needs to be replaced. It is 40GB, or 1220 PE's. I have another disk which is about 120GB, but has 1221 free PE's. Both disks are in the same VG, Server and the same 
> LV, 
> >> >>> FTPRoot. When I try "pvmove -v /dev/hdl1" it failes (doesn't even start, really) and tells me I haven't any free PE's.
> >> >>> 
> >> >>> What can I have missed...
> >> >>> 
> >> >>> 1) I shrick the filesystem first with about 60GB
> >> >>> 2) I use lvreduce to shrick the LV with about 59GB
> >> >>> 3) I tried "pvmove -v /dev/hdl" to move all PE's on this 40GB disk to the free ones on the other disks. This should have worked, shoudln't it?
> >> >>> 
> >> >>> have I missed something critical?
> >> >>> 
> >> >>> //Anders
> >> >>> 
> >> >>> 
> >> >>> 
> >> >>> _______________________________________________
> >> >>> linux-lvm mailing list
> >> >>> linux-lvm@sistina.com
> >> >>> http://lists.sistina.com/mailman/listinfo/linux-lvm
> >> >>> read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html
> >> >>
> >> >>-- 
> >> >>
> >> >>Regards,
> >> >>Heinz    -- The LVM Guy --
> >> >>
> >> >>*** Software bugs are stupid.
> >> >>    Nevertheless it needs not so stupid people to solve them ***
> >> >>
> >> >>=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> >> >>
> >> >>Heinz Mauelshagen                                 Sistina Software Inc.
> >> >>Senior Consultant/Developer                       Am Sonnenhang 11
> >> >>                                                  56242 Marienrachdorf
> >> >>                                                  Germany
> >> >>Mauelshagen@Sistina.com                           +49 2626 141200
> >> >>                                                       FAX 924446
> >> >>=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> >> >>
> >> >>_______________________________________________
> >> >>linux-lvm mailing list
> >> >>linux-lvm@sistina.com
> >> >>http://lists.sistina.com/mailman/listinfo/linux-lvm
> >> >>read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html
> >> >>
> >> >>
> >> >
> >> >
> >> >
> >> >
> >> >_______________________________________________
> >> >linux-lvm mailing list
> >> >linux-lvm@sistina.com
> >> >http://lists.sistina.com/mailman/listinfo/linux-lvm
> >> >read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html
> >> >
> >> >
> >> 
> >> 
> >> 
> >> 
> >> _______________________________________________
> >> linux-lvm mailing list
> >> linux-lvm@sistina.com
> >> http://lists.sistina.com/mailman/listinfo/linux-lvm
> >> read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html
> >
> >*** Software bugs are stupid.
> >    Nevertheless it needs not so stupid people to solve them ***
> >

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Heinz Mauelshagen                                 Sistina Software Inc.
Senior Consultant/Developer                       Am Sonnenhang 11
                                                  56242 Marienrachdorf
                                                  Germany
Mauelshagen@Sistina.com                           +49 2626 141200
                                                       FAX 924446
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