Re: how to debug slow rbd block device

[Stefan Priebe - Profihost AG <s.priebe@xxxxxxxxxxxx>]

Am 23.05.2012 09:19, schrieb Josh Durgin:
> On 05/23/2012 12:01 AM, Stefan Priebe - Profihost AG wrote:
> You can use any of the rbd-specific options (like rbd_cache_max_dirty)
> with qemu >= 0.15.
> 
> You can set them in a global ceph.conf file, or specify them on the qemu
> command line like:
> 
> qemu -m 512 -drive
> file=rbd:pool/image:rbd_cache_max_dirty=0:rbd_cache=true,format=raw,if=virtio
ah thanks and sorry. Is there a way to verify which options are active /
working on a specific rbd block device?

Stefan
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