Hi there,
On Thu, 18 May 2000, Richard Bollinger wrote:
> > May 18 16:38:27 backup kernel: hdh2's event counter: 0000000a
> > May 18 16:38:27 backup kernel: hdg2's event counter: 00000008
> > May 18 16:38:27 backup kernel: hdf2's event counter: 00000008
> > May 18 16:38:27 backup kernel: hde2's event counter: 00000008
> > May 18 16:38:27 backup kernel: hdd2's event counter: 00000008
> > May 18 16:38:27 backup kernel: hdc2's event counter: 00000008
> > May 18 16:38:27 backup kernel: hdb2's event counter: 00000008
> > May 18 16:38:27 backup kernel: hda2's event counter: 00000008
> > May 18 16:38:27 backup kernel: md: superblock update time inconsistency
> > May 18 16:38:27 backup kernel: unbind<hdb2,2>
>
> Your logs indicate that the Raid code decided to look at hdh2 as gospel and
> dismiss all of the rest. The easiest solution is to temporarily disconnect
> or disable hdh2, then restart the system. It will accept the data on all of
> the other drives as OK now and start up the array in "degraded" mode due to
> the missing hdh2 drive. Shut the system down once more, reattach hdh2 and
> start it up one more time. This time, all of the drives should be there,
> but with hdh2 listed as out of step. Now you should be able to do a
> "raidhotadd /dev/md0 /dev/hdh2" to start reconstruction with hdh2 included.
I've thought of a problem with this. IIRC, the event counter is
incremented once for each successful mount. If you follow this procedure,
then the raid driver will increment hd[a-g]'s event counters to 9, and
when you boot back up again you'll be in the same situation.
The best suggestion I can give is to reboot three times so that the event
counters cycle through '9', 'a' and then 'b'. When you reattach hdh2, and
reboot the event counters for hd[a-g] will be greater than hdh's, and you
can do the raidhotadd then!
Hope this helps!
Corin
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