RAFT and CTDB

Volker Lendecke Volker.Lendecke at SerNet.DE
Mon Nov 24 08:38:36 MST 2014


On Mon, Nov 24, 2014 at 03:35:06PM +0000, Rowland Penny wrote:
> On 24/11/14 15:24, Richard Sharpe wrote:
> >On Sun, Nov 23, 2014 at 9:31 PM, Min Wai Chan <dcmwai at gmail.com> wrote:
> >>Dear Steve,
> >>
> >>Ok ok, Will send it over then there are on one login to the server maybe
> >>during mid night.
> >>
> >>I saw something about the ping_ping -RW test
> >>something like below?
> >>
> >>ping_pong -rw test.dat N
> >>
> >>Do you need this test result as well?
> >>
> >>I just wonder if we mount the ocfs2 wrong?
> >>If there is a way to mount ocfs2 via user space?
> >It is not an issue of mounting ocfs2 incorrectly, I believe.
> >
> >Rather, you have to have their user-space posix locking daemon running.
> >
> I think I see a possible answer, does this mean that you would get
> two locking daemons, the CTDB one AND the OCFS2 one ??

Assuming ocfs2 really requires a daemon to do fcntl locking,
then yes, there will be two daemons. ctdb will rely on
ocfs2's daemon for the reclockfile. Both serve different
purposes.

Volker

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