Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Peter Funk wrote:
> Hello,
>
> today I tried to find out, who is the "someone" in the following
> drbd syslog messages:
> .... State change failed: Device is held open by someone
> ... drbd0: state = { cs:Connected st:Primary/Secondary ds:UpToDate/UpToDate r--- }
> ... drbd0: wanted = { cs:Connected st:Secondary/Secondary ds:UpToDate/UpToDate r--- }
>
> Unfortunately I had no success.
>
> Searching the archives I've noticed similar questions came up
> here on the list earlier:
> http://lists.linbit.com/pipermail/drbd-user/2008-November/010706.html
> http://lists.linbit.com/pipermail/drbd-user/2008-August/009954.html
> http://lists.linbit.com/pipermail/drbd-user/2007-August/007338.html
> (I'm not using ocfs2: The answer Lars Ellenberg gave in the
> last citiation didn't apply to my situation here).
>
> I've looked into source and found in drbd_main.c, that the message
> above is given, if( ns.role == Secondary && mdev->open_cnt )
>
> Can you imagine a race scenario, where the reference counter ``open_cnt``
> might be incremented or decremented wrong? Especially on a dual
> quad core (menaing it has 8 active CPU cores) SMP machine?
>
> Any hints, how to find out?
>
> Regards and many thanks in advance, Peter
Hi,
just a blind shot: Do you run Debian and do you maybe have Etch with
the "multipath-tools"-package installed? If that is the case, make
sure that the udev-rules for multipath are disabled, because other-
wise, multipath-tools would attach to the drbd devices and make the
rest go foobar.
M.
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