by Brewsk » Fri, 04 Jul 2003 03:52:36
Does luxadm remove_device & insert device need to be run on both servers
simultaneouly?
Thanks.
by Anthony Mandi » Fri, 04 Jul 2003 19:42:06
> Near as I can remember, there's two parts:
> 1) disable the disk in Veritas
> 2) luxadm remove_device
-am ? 2003
by Mr. Johan Andersso » Fri, 04 Jul 2003 20:13:55
> Does luxadm remove_device & insert device need to be run on both servers
> simultaneouly?
> Thanks.
However, it can be done out of sync, but its just better to fix both at
once, normally no downtime is needed for this, i.e. everuthing is mirrored
or raid5.
Main question is, why do they share A5000?
If it is a cluster, procedures shoudl be written for this at site.
If not, I assume the two 6800 are mirroring their separate data, normally
I would have used the A5000 in split mode and made the systems just see
their disks, but perhaps this is not possible?
Otherwise...
1) disable disk from veritas use on both hosts.
2) start luxadm remove_device on both hosts
3) remove the disk
4) finish remove on both hosts
5) luxadm insert_device on both hosts
6) insert a new disk
7) finish insert on both hosts
8) vxdctl enable on both host
When I say on both hosts, it doesnt mean exaclty the same time, because
that will just confuse the A5000, in each step...
A) do host A, wait until it finishes,
B) do host B, wait until it finishes,
C) continue to next step.
Works for me.
If the disk is faulty in that it doesnt answer, you might have some
problems, but I wont go in to the resolution if thoose problems here.
/Johan A
by Mr. Johan Andersso » Fri, 04 Jul 2003 20:15:51
On Wed, 2 Jul 2003, it was written:
<snip snip>
He just said he had them dual-attached, didnt even mention cluster.Quote:> I haven't seen this in a dual-attached system where I assume you're
> using a filesystem that supports simultaneous access, i.e. something
> other than UFS which won't all both systems to mount the volume at the
> same time.
Nope, it wont, has to be doen on both nodes.Quote:> I'd disable the disk in Veritas in both systems. Since you're attached
> to the A5000 on both systems, I guess when you remove_device on one, the
> other would figure it out.
That he shoudl indeed.Quote:> Why haven't you run this by Sun? It's really a support-contract kinda
> thing. If you running this sort of configuration without a contract,
> your PHB is out of their mind and they deserve all the downtime that's
> coming to them...
/Johan A
by Mr. Johan Andersso » Fri, 04 Jul 2003 20:27:15
> > > We would like to know the recommended procedure to replace a failed and/or
> > > failing drive on 2 - 6800's with two multi-pathed A5000's.
> > Near as I can remember, there's two parts:
> > 1) disable the disk in Veritas
> > 2) luxadm remove_device
> Try remembering a little harder, Rolfie. The A5000 is FCAL. FCAL
> disks have unique WWNs so you need to also run devfsadm (or disks
> on older version of Solaris) for the OS to "see" the replaced drives.
/Johan A
Hi all,
This is something new for me.
My company just ordered a brand new Sun Fire 6800. My admins told me to
study about domains?? as I am going to shift to a bit higher level team
to manage Mid range and High end servers.
Any idea what domains are for??
Also someone asked me that if a server has 3 domains and if 1 domain
fails then how the other domain takes over??Is this somewhat related
DNS??
I am having an interview next week from internal tech team and it would
be like a dream coming true....by joining the team.
Also tell me, what typical question one can ask on Sun hardware like
that Sun Fire 6800.
Many thanks for help in advance.
-Vin.
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