[Halld-offline] Outage Alert: move of /work/halld and /work/halld2, Wed. Nov. 29, 9 am to 10 am

[Mark Ito]

The work disk is now available for use. In fact it was ready about an 
hour ago (I misinterpreted the message I received at that time).


On 11/29/2017 10:20 AM, Mark Ito wrote:
>
> The move is still in progress, though very close to done. Stay tuned 
> for the all-clear...
>
>
> On 11/28/2017 10:47 AM, Mark Ito wrote:
>>
>> Folks,
>>
>> We are scheduled to make the move of our work space from a 
>> Lustre-based system to a ZFS file system. This will happen tomorrow 
>> (Wednesday, November 29) starting at 9 am. The move should take about 
>> an hour.
>>
>> N. B.: *during this time, you will not be able to write to the Hall D 
>> work disks*. Reading may be intermittent as well.
>>
>> Some notes on the new configuration:
>>
>> Both /work/halld and /work/halld2 will be on the same partition. The 
>> old /work/halld2 will actually appear as a new directory, 
>> /work/halld/halld2. A merge of the two systems is not a practical 
>> option. There will be a soft link, /work/halld2 pointing to the new 
>> /work/halld/halld2 directory, so legacy scripts should work.
>>
>> Since there will be no distinction in the underlying hardware for the 
>> old /work/halld and /work/halld2, there is no more need to 
>> distinguish how they should be used. Small files and SQLite files are 
>> OK anywhere on the new work disk.
>>
>> To reduce future confusion, you may want to move your files out of 
>> /work/halld/halld2, but that is not required at present.
>>
>> Any scripts that use
>>
>>   /lustre/expphy/work/halld or /v/lustre2/expphy/work/halld
>>
>> instead of
>>
>>   /work/halld
>>
>> or that use
>>
>>   /w/halld-scifs1a
>>
>> instead of
>>
>>   /work/halld2
>>
>> will break. In other words, the server-specific directory names will 
>> change (as they must).
>>
>> Let me know if there are any questions or objections to this schedule.
>>
>>   - Mark
>>
>> -- 
>> Mark Ito,marki at jlab.org, (757)269-5295
>>
>>
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>
> -- 
> Mark Ito,marki at jlab.org, (757)269-5295
>
>
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-- 
Mark Ito, marki at jlab.org, (757)269-5295

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