Re: GFS2 file locking issues

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On Wed, Feb 11, 2009 at 8:18 PM,  <steve@xxxxxxxxxxx> wrote:
> cat /proc/mounts

/dev/mapper/gfsc-lvol0 /gfs2 gfs2 rw,hostdata=jid=0:id=720897:first=1 0 0

I also tried mounting explicitly specifying lockproto=lock_dlm, but it
didn't help.

Is my understanding of locking correct after all? Is that the case if
the process makes flock on a file, no other processes including ones
running on other cluster nodes could obtain a lock until the first
writer releases it?

>
> It should be listed in the options. That will also tell you if localflocks
> has been set as well. We do know of a bug in the GFS/GFS2 flock code though,
> it ought to be using an interruptible wait and it doesn't at the moment.
> Otherwise I don't know of any other issues.
>
> Which kernel version are you using?

2.6.18-92.el5xen (from CentOS 5.2)


Kirill
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