On Sat, Jul 23, 2016 at 4:39 PM, Nathanial Byrnes <nate@xxxxxxxxx> wrote:
> I found it. I'm not sure how the block device was created, but, I had the
> wrong image format. I thought that image format 2 was in 3.11+, and debian
> 8.5 is 3.16 ... but I attached to an image-format 1 image and /dev/rbd0
> magically appeared...
3.16 supports format 2, but doesn't support the more recent features,
which can be disabled with rbd feature disable. If you had used the
CLI, you would've got an error message.
If you are going to write to sysfs directly, which I would advise
against, at least check the exit code.
Thanks,
Ilya
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