On Thu, Aug 4, 2016 at 2:15 AM, Yi Zhang <yiz...@redhat.com> wrote:
> Hi folks,
>
> Seems I hit one issue that btt device node disappeared after configure with
> non support sector_size, could you help confirm it?
>
> 4.7.0
> # ndctl create-namespace -f -e namespace0.0 --mode=sector -l 512
> {
> "dev":"namespace0.0",
> "mode":"sector",
> "uuid":"45b4900d-da76-47c8-956f-a70e4ea33fe3",
> "sector_size":512,
> "blockdev":"pmem0s"
> }
> # lsblk
> NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
> pmem0s 259:0 0 8G 0 disk
> pmem1s 259:2 0 7.1G 0 disk
> pmem2s 259:1 0 7.1G 0 disk
> pmem3s 259:3 0 7.1G 0 disk
> # ndctl create-namespace -f -e namespace0.0 --mode=sector -l 513
> failed to reconfigure namespace
>
> # lsblk
> NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
> pmem1s 259:2 0 7.1G 0 disk
> pmem2s 259:1 0 7.1G 0 disk
> pmem3s 259:3 0 7.1G 0 disk
This is expected if you specify invalid namespace values, but we
should be trapping this case and reporting a more useful error message
from ndctl rather than letting the kernel fail the namespace setup.
For now, you can fix this by re-configuring the namespace with valid values.
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