[lvm-devel] cache support

[Paul B. Henson]

On Fri, Mar 28, 2014 at 06:38:41PM -0700, Paul B. Henson wrote:

> So I updated to the latest 3.13.7 kernel and decided to try and spin up my
> thin pool. The first couple steps went well:
> 
> # lvcreate -l 945908 -n thinpool vg_vz /dev/md3
>   Logical volume "thinpool" created
> 
> # lvcreate -L 2.5G -n thinpool_metadata vg_vz /dev/md2
>   Logical volume "thinpool_metadata" created
> 
> But lvconvert seems to have gone sideways:
> 
> # lvconvert --thinpool vg_vz/thinpool --poolmetadata thinpool_metadata
>   device-mapper: remove ioctl on  failed: Device or resource busy
>   Logical volume "lvol0" created
>   device-mapper: reload ioctl on  failed: Invalid argument
>   Failed to activate pool logical volume vg_vz/thinpool.

I also just noticed the kernel logged some complaints too when I tried to run
the lvconvert:

Mar 28 17:59:03 virtz kernel: [82813.713227] device-mapper: table: 253:26: thin-pool: Invalid block size
Mar 28 17:59:03 virtz kernel: [82813.713232] device-mapper: ioctl: error adding target to table


Mar 28 18:11:38 virtz kernel: [83568.730506] device-mapper: table: 253:26: thin-pool: Invalid block size
Mar 28 18:11:38 virtz kernel: [83568.730510] device-mapper: ioctl: error adding target to table