On 07/06/2016 07:41 AM, Ilya Dryomov wrote:
On Wed, Jul 6, 2016 at 12:16 AM, Radoslaw Zarzynski
<rzarzynski@xxxxxxxxxxxx> wrote:
Hello Guys,
I wonder about a method for providing bare-metal hosts with an access
to RBD volumes.
The most obvious solution is krbd. Unfortunately, it has a substantial
feature gap in comparison to librbd [1][2]. exclusive-lock seems to be
the basic dependency that should be satisfied to even start thinking
about the rest. Is someone working on this feature? What are the plans
in general?
The code for exclusive-lock, object-map and fast-diff is pretty much
ready.
Hi Ilya,
Sounds great! But where can I read these code, I did not find it
in https://github.com/ceph/ceph-client. could you give a reference
for it. thanx a lot.
Yang
We had a large prerequisite that had to go in before any of
these and it's been merged into 4.7, so it's now a matter of review and
more comprehensive testing. deep-flatten isn't ready, but should
follow shortly after.
Note that you can disable all of these features dynamically and that
the image is perfectly usable with none of them enabled. Unless you
have clones or discard a lot, in which case object-map can help, the
I/O path is the same.
No concrete plans for mirroring support yet.
Thanks,
Ilya
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