[linux-lvm] newbie lvm question

C'est Pierre cestpierre at gmail.com
Wed Jun 21 15:48:12 UTC 2006


Hi,

The link is normal, I think.

What about an lvscan -v ? does it say anything wrong? are you running
these commands as root or any other similarly powerful user?


Pierre

On 6/21/06, Beginner <dermot at sciencephoto.co.uk> wrote:
> Hi,
>
> It still refuses.
>
> # vgmknodes -v volgrp0
>     Using logical volume(s) on command line
> # vgchange -a y
>   1 logical volume(s) in volume group "volgrp0" now active
> # vgdisplay volgrp0
>   --- Volume group ---
>   VG Name               volgrp0
>   System ID
>   Format                lvm2
>   Metadata Areas        1
>   Metadata Sequence No  8
>   VG Access             read/write
>   VG Status             resizable
>   MAX LV                0
>   Cur LV                1
>   Open LV               0
>   Max PV                0
>   Cur PV                1
>   Act PV                1
>   VG Size               12.48 GB
>   PE Size               4.00 MB
>   Total PE              3196
>   Alloc PE / Size       1536 / 6.00 GB
>   Free  PE / Size       1660 / 6.48 GB
>   VG UUID               JK7RNE-DHM2-KNtf-Scua-jOs5-5x11-396xaY
>
> # mkfs -t ext2 /dev/mapper/volgrp0-volume1
> mke2fs 1.37 (21-Mar-2005)
> Could not stat /dev/mapper/volgrp0-volume1 --- Permission denied
>
> # lvmdiskscan
>   /dev/hda1 [        5.86 GB]
>   /dev/hda2 [      302.70 MB]
>   /dev/hda3 [       12.49 GB] LVM physical volume
>   0 disks
>   2 partitions
>   0 LVM physical volume whole disks
>   1 LVM physical volume
>
>
> I can't see what might be wrong. The file in /dev/volgrp0 is a symlink to /dev/mapper/volgrp0-
> volume1 and not /dev/mapper/volgrp0/volume1. Could that be the problem?
>
> Any other ideas?
> Dp.
>
>
>
> On 21 Jun 2006 at 16:03, C'est Pierre wrote:
>
> > Hi,
> >
> > try running vgmknodes and/or vgchange -a y volgrp0 and try again.
> > Alternatively try mkfs /dev/mapper/volume1
> >
> >
> > Cheers,
> > Pierre
> >
> > On 6/21/06, Beginner <dermot at sciencephoto.co.uk> wrote:
> > > Hi,
> > >
> > > Fedora Core release 4 (Stentz)
> > >
> > > I am trying to have a play around with LVM and have hit a snag when I came to formatting the LV.
> > >
> > > I have a fresh install on a single 18GB disk. The root (/dev/hda1) partition is 6.1G, and there is
> > > about 300MB swap. That leaves about 12GB spare on hda3. I created hda3 and set the partition
> > > type 8e. I created the PV:
> > >
> > >   --- Physical volume ---
> > >   PV Name               /dev/hda3
> > >   VG Name               volgrp0
> > >   PV Size               12.48 GB / not usable 0
> > >   Allocatable           yes
> > >   PE Size (KByte)       4096
> > >   Total PE              3196
> > >   Free PE               1660
> > >   Allocated PE          1536
> > >   PV UUID               ttjcMK-tNnb-59xe-qGtl-7oAn-XGMT-eBvRky
> > >
> > > Created a volume group with hda3 in:
> > >
> > >   --- Volume group ---
> > >   VG Name               volgrp0
> > >   System ID
> > >   Format                lvm2
> > >   Metadata Areas        1
> > >   Metadata Sequence No  6
> > >   VG Access             read/write
> > >   VG Status             resizable
> > >   MAX LV                0
> > >   Cur LV                1
> > >   Open LV               0
> > >   Max PV                0
> > >   Cur PV                1
> > >   Act PV                1
> > >   VG Size               12.48 GB
> > >   PE Size               4.00 MB
> > >   Total PE              3196
> > >   Alloc PE / Size       1536 / 6.00 GB
> > >   Free  PE / Size       1660 / 6.48 GB
> > >   VG UUID               JK7RNE-DHM2-KNtf-Scua-jOs5-5x11-396xaY
> > >
> > > and then a 6GB logical volume:
> > >
> > >   LV Name                /dev/volgrp0/volume1
> > >   VG Name                volgrp0
> > >   LV UUID                msRAz9-8A4e-dWGO-C9JG-c08Z-R1xG-iYUWoe
> > >   LV Write Access        read/write
> > >   LV Status              available
> > >   # open                 0
> > >   LV Size                6.00 GB
> > >   Current LE             1536
> > >   Segments               1
> > >   Allocation             inherit
> > >   Read ahead sectors     0
> > >   Block device           253:0
> > >
> > > However I can not format '/dev/volgrp0/volume1', I get Permission denied.
> > >
> > > >mkfs -t ext3 /dev/volgrp0/volume1
> > > Could not stat /dev/volgrp0/volume1 --- Permission denied.
> > >
> > > I notice the VG status is resizable, should that be available? When I try and change it, it reports
> > > that it's already available.
> > >
> > >     Finding all volume groups
> > >     Finding volume group "volgrp0"
> > >     1 logical volume(s) in volume group "volgrp0" already active
> > >     Found volume group "volgrp0"
> > >     Activated logical volumes in volume group "volgrp0"
> > >   1 logical volume(s) in volume group "volgrp0" now active
> > >
> > > Am I missing something?
> > > TIA. Dp.
> > >
> > > Dermot Paikkos
> > >
> > > Network Administrator @ Science Photo Library
> > > Phone: 0207 432 1100
> > > Fax: 0207 286 8668
> > >
> > > _______________________________________________
> > > linux-lvm mailing list
> > > linux-lvm at redhat.com
> > > https://www.redhat.com/mailman/listinfo/linux-lvm
> > > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> > >
> >
> > _______________________________________________
> > linux-lvm mailing list
> > linux-lvm at redhat.com
> > https://www.redhat.com/mailman/listinfo/linux-lvm
> > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
>
> Dermot Paikkos
>
> Network Administrator @ Science Photo Library
> Phone: 0207 432 1100
> Fax: 0207 286 8668
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm at redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>




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