On Tuesday 13 January 2009 20:31:33 John J. Foster wrote:
> In trying to extend a volume I get the following error:
>
> mockingbird ~ # lvextend -v -L400G /dev/vg00/data
>     Finding volume group vg00
>     Archiving volume group "vg00" metadata (seqno 22).
>   Extending logical volume data to 400.00 GB
>     Creating volume group backup "/etc/lvm/backup/vg00" (seqno 23).
>     Found volume group "vg00"
>     Found volume group "vg00"
>     Loading vg00-data table
>   device-mapper: reload ioctl failed: Invalid argument
>   Failed to suspend data
>
> The following show in /var/log/messages:
>
> Jan 13 11:23:30 mockingbird device-mapper: table: device 8:5 too small
> for target

You are trying to create an lv that is bigger than the maximum

Despite the fact that pvdisplay says you have 415GB unallocated space, you 
cannot make a 400G volume as lvm wants more than 15G for metadata. Looking at 
the existing usage, it is using around 5% for this.

Try using the -l option to lvextend and specifying a number of extents instead 
of space usage.


-- 
alan dot mckinnon at gmail dot com


> Jan 13 11:23:30 mockingbird device-mapper: table: 254:5: linear:
> dm-linear: Device lookup failed
> Jan 13 11:23:30 mockingbird device-mapper: ioctl: error adding target to
> table
>
> Machine is sync'd and up-to-date. Emerge --depclean & revdep-rebuild
> come back clean.
>
> Other pertinent info:
>
> mockingbird ~ # uname -a
> Linux mockingbird 2.6.26-gentoo-r3 #6 Thu Jan 8 13:00:01 MST 2009 i686
> AMD Athlon(tm) XP 2800+ AuthenticAMD GNU/Linux
>
> mockingbird ~ # pvdisplay
>   --- Physical volume ---
>   PV Name               /dev/sda5
>   VG Name               vg00
>   PV Size               500.00 GB / not usable 3.81 MB
>   Allocatable           yes
>   PE Size (KByte)       4096
>   Total PE              127999
>   Free PE               106239
>   Allocated PE          21760
>   PV UUID               eq8G5G-va5U-dF9I-i0q8-PFc5-oLrq-767XVk
>
> mockingbird ~ # vgdisplay
>   --- Volume group ---
>   VG Name               vg00
>   System ID
>   Format                lvm2
>   Metadata Areas        1
>   Metadata Sequence No  22
>   VG Access             read/write
>   VG Status             resizable
>   MAX LV                0
>   Cur LV                6
>   Open LV               6
>   Max PV                0
>   Cur PV                1
>   Act PV                1
>   VG Size               500.00 GB
>   PE Size               4.00 MB
>   Total PE              127999
>   Alloc PE / Size       21760 / 85.00 GB
>   Free  PE / Size       106239 / 415.00 GB
>   VG UUID               97vsli-KlDD-VhYS-dWq0-Nw9m-smF0-1uuj60

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