On Fri, Apr 01, 2011 at 08:42:04AM -0600, Serge Dubrouski wrote: > On Fri, Apr 1, 2011 at 8:38 AM, Lars Ellenberg > <lars.ellenb...@linbit.com> wrote: > > On Fri, Apr 01, 2011 at 11:35:19AM +0200, Christoph Bartoschek wrote: > >> Am 01.04.2011 11:27, schrieb Florian Haas: > >> > On 2011-04-01 10:49, Christoph Bartoschek wrote: > >> >> Am 01.04.2011 10:27, schrieb Andrew Beekhof: > >> >>> On Sat, Mar 26, 2011 at 12:10 AM, Lars Ellenberg > >> >>> <lars.ellenb...@linbit.com> wrote: > >> >>>> On Fri, Mar 25, 2011 at 06:18:07PM +0100, Christoph Bartoschek wrote: > >> >>>>> I am missing the state: running degraded or suboptimal. > >> >>>> > >> >>>> Yep, "degraded" is not a state available for pacemaker. > >> >>>> Pacemaker cannot do much about "suboptimal". > >> >>> > >> >>> I wonder what it would take to change that. I suspect either a > >> >>> crystal ball or way too much knowledge of drbd internals. > >> >> > >> >> The RA would be responsible to check this. For drbd any diskstate > >> >> different from UpToDate/UpToDate is suboptimal. > >> > > >> > Have you actually looked at the resource agent? It does already evaluate > >> > the disk state and adjusts the master preference accordingly. What else > >> > is there to do? > >> > >> Maybe I misunderstood Andrew's comment. I read it this way: If we > >> introduce a new state "suboptimal", would it be hard to detect it? > >> > >> I just wanted to express that detecting suboptimality seems not to be > >> that hard. > > > > But that state is useless for pacemaker, > > since it cannot do anything about it. > > Looks like a lot of people, including myself, are still confused with > this statement. Basically this state of DRBD resource is unstable and > resource is unusable, why do you think that this is normal for > Pacemaker to report a such state as Ok state?
It is usable. It is being used. It is at least as usable as a degraded RAID1. Pacemaker cannot do anything about that missing disk, either. Of course you can patch pacemaker to detect that the RAID1 is degraded, and trigger faxing a PO to your supplier for a replacement drive. But possibly you should rather have some monitoring (nagios, ...) notice this, page/email/alert with your favorite method the relevant people, and have them take appropriate actions? -- : Lars Ellenberg : LINBIT | Your Way to High Availability : DRBD/HA support and consulting http://www.linbit.com _______________________________________________ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
