We did this at RHUL when our DPM pool nodes were upgraded to SL5 and it
worked fine.
I think the arrays were temporarily disconnected as a precaution.
The hypothetical issue is that if for some reason the o/s drive is not
found, your array takes its place as sda and the data is replaced with a
nice o/s install.
Simon
Owen Mcshane wrote:
> Quoting Ewan MacMahon <[log in to unmask]>:
>
>> Hi all,
>>
>> It strikes me that is should be possible in principle to
>> upgrade the OS on a DPM disk server without draining it by
>> simply installing the new OS over the old one and setting
>> up a fresh install of the DPM pool node. All the file
>> metadata is stored on the head node, and the files' physical
>> paths won't change.
>>
>> However, I'm not aware of anyone doing this. Does this
>> sound like it should work and has anyone actually tried?
>>
>> Or indeed does everyone do this routinely and I've just
>> never noticed.....
>>
>> Ewan
>>
>
> I've been doing this over the past day or so.
>
> Didn't "install the OS over the new one" though, kickstarted from
> scratch to SL5, leaving the storage array intact.
>
> Owen
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