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

[Mark Ito]

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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